July/August 2009 Volume 16, No. 4 (TS-PU-0009-09)
Improving Internal
Combustion with
Direct Injection
Direct injection engines — found in vehicles ranging from
sports cars to snowmobiles — are becoming more
common as manufacturers look to improve the internal
combustion engine by squeezing out more horsepower,
less emissions and better fuel efficiency.
Several GM engine families presently use Spark Ignited
Direct Injection (SIDI) technology, including the 2.0L turbocharged 4-cylinder engine in the Saturn SKY and Pontiac
Solstice and the 3.6L V6 engine in the Cadillac CTS. Some
industry projections indicate that in a few years, one in six
engines will be built with direct injection. The numbers illustrate the value of the technology: the 300 HP 3.6L V6 in the
new Chevy Camaro is rated at an estimated 29 MPG highway.
Direct injection refers
to the fact that the fuel
is injected directly into
the combustion chamber.
Direct injection is not new.
In fact, it’s a basic principle
of the diesel engine. A diesel engine depends on the heat of compression to ignite
the diesel fuel the instant it’s injected into the cylinder (this is Compression Ignited
Direct Injection or CIDI). By comparison, SIDI engines inject gasoline directly into the
air in the cylinder and the resulting mixture is then ignited by a spark plug.
IN THIS ISSUE
Improving Internal Combustion
with Direct Injection . . . . . . . . . . . . . . . . .1
Water Pump Service . . . . . . . . . . . . . . . . .2
The Return of the Camaro . . . . . . . . . . . .4
OEM Saab Diagnostics . . . . . . . . . . . . . . .5
The injection system used on SIDI engines
differs from standard fuel injection in one
important way. With SIDI, the fuel is injected
at a much higher pressure (up to 2,176 psi or
15,000 kPa) because it’s injected directly into
the combustion chamber rather than into the
intake manifold (port injection).
Measuring Voltage Drop . . . . . . . . . . . . .5
Recruit New Technicians
with GM ASEP . . . . . . . . . . . . . . . . . . . . . .6
New Brake Parts Cleaner Available . . . .6
ASE Computer-Based Testing . . . . . . . . .6
Benefits of SIDI
Tech Tips . . . . . . . . . . . . . . . . . . . . . . . . . . .7
When compared with port injection,
benefits of SIDI include:
Training Update . . . . . . . . . . . . . . . . . . . . .8
New 6.6L Duramax Diesel Fuel Filter . . .8
– lower emissions, particularly at startup
– higher compression
Injector tip in combustion chamber
ON THE WEB
– better fuel economy (particularly on turbocharged engines)
– increased horsepower
All gasoline engines depend on atomizing the fuel before combustion. But with
carburetors, throttle bodies, and even port injection, the atomization takes place at a
distance from the combustion chamber. By the time the atomized fuel and air reach
the combustion chamber, some of the fuel has separated out and collects on intake
continued on page 3
1
– www.acdelcotechconnect.com, click on
the TechConnect Magazine link, or
– Log on to the ACDelco LMS, click on the
Resources link
Water Pump Service
Water pumps move hundreds of
gallons of coolant. Eventually, the
bearings and seal wear out, causing a
noise or leak.
Some leakage around the water
pump weep hole is evidence of normal
coolant weepage, which prevents
coolant from accumulating around the
bearing seal. This is a normal condition.
However, if there is a constant drip or
stream out of the weep hole, especially
under pressure, the seal may be worn
and the water pump needs replacement.
Water pumps also may fail due to
Water pump wear components:
A. bearing assembly
B. seal
contamination and corrosion caused by
the lack of proper maintenance or servicing of the cooling system. Failure to
flush the cooling system when the water
pump or other system components are
replaced can leave excessive contamination and lead to repeat failure.
Internal corrosion in a failed water pump
Also, if there is a visible wobble in the
shaft or the bearings are making noise,
the water pump needs to be replaced.
Service Tips
When replacing a water pump, there
are several key items to keep in mind in
order to complete a successful repair
and eliminate a comeback. These
include:
– Determine the root cause of failure,
especially if the water pump failed
prematurely
– Flush the cooling system
completely
– Use the recommended 50/50
coolant/water mix
– Do not use any non-approved flush
agents
– Follow the instructions that are
included with the water pump
– Use sealant tabs if recommended
ACDelco TechConnect is published bi-monthly
and online for technicians of Total Service
Support (TSS) and Key Fleet accounts to
provide timely service information, increase
knowledge and improve the performance of
the service center.
Engine Coolant
Quality coolant and water are critical
to water pump operation. Contaminated
coolant, depleted coolant, and poor
water quality can result in corrosion and
seal damage.
Publisher:
Water quality varies greatly in
different areas. Tap water contains
chlorine and chloride, which are corrosive to aluminum. Unclean water also
leaves mineral deposits in the cooling
system, which can reduce coolant flow.
Editor:
Engine coolants come in various
colors and formulations, ranging from
conventional green coolants to a variety
of long-life coolants that may be orange,
red, gold or blue. The color is mainly a
dye, but the chemistry of the coolants
is different.
Vehicle manufacturers have different
coolant requirements and there may be
some confusion over which type of
coolant to use in a vehicle. Check the
Service Information for the correct
coolant for the vehicle being serviced.
Most manufacturers do not recommend
mixing long-life coolant and conventional
coolant. New coolant may be degraded
if the correct 50/50 coolant/water mix is
not used or if there are excessive contaminants in the system.
When replacing a water pump, it’s
critical to flush the cooling system.
Prior to performing the flush procedure,
remove, clean and reinstall the coolant
recovery reservoir. To flush the system,
use power flush equipment or thermal
cycle the system with clean water
three times.
Installation
After installing the new water pump,
perform the following to ensure a
proper repair:
– Torque the bolts to the manufacturer’s specifications
– Adjust belts to the proper tension
(if applicable)
– With the new pump installed,
turn the hub by hand and check
for rotation
– Pressure test the system for leaks
– Thanks to Mike Militello
2
Mike DeSander
ACDelco
E-mail /
mike.desander@gm.com
Mike Militello
ACDelco
E-mail /
michael.militello@gm.com
Technical Editor:
Mark Spencer
E-mail /
mspencer@gpworldwide.com
Production Manager:
Marie Meredith
Desktop Publishing:
5by5 Design LLC
E-mail /
dkelly@5by5dzign.com
Write to: *
ACDelco TechConnect
P.O. Box 500
Troy, MI 48007-0500
:
On the Web:
To read and search recent issues of
TechConnect online:
– www.acdelcotechconnect.com,
click on the TechConnect Magazine
link, or
– Log on to the ACDelco LMS, click
on the Resources link
ACDelco service tips are intended for use by
professional technicians, not a “do-it-yourselfer.”
They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have
the equipment, tools, safety instructions and knowhow to do a job properly and safely. If a condition is
described, it cannot be assumed that the information applies to all vehicles or that all vehicles will
have that condition.
All materials and programs described in this
magazine are subject to change. Submission of
materials implies the right to edit and publish.
Inclusion in the publication is not necessarily an
endorsement of the individual or the company.
TechConnect is published for ACDelco by Sandy
Corporation, Troy, MI.
©2009 ACDelco. All rights reserved.
Improving Internal Combustion
with Direct Injection – continued from page 1
surfaces. SIDI eliminates all of this by
atomizing the fuel directly in the combustion chamber. As the fuel atomizes,
the air and fuel mixture are cooled,
enabling the use of a higher compression ratio.
provides 65V to open the injector. Then
the ECM provides pulse width modulated 12V to hold the injector open for the
prescribed time.
Better atomization contributes to a
reduction in pre-ignition and detonation,
which is why the SIDI engine can operate at a higher compression ratio and
consume less fuel. SIDI allows the
engine to run on a leaner mixture
(more air, less fuel) at full power. SIDI
also allows a higher compression ratio,
which in turn provides better fuel economy at part and full throttle.
A scan tool can be used to perform
the following (see the appropriate
Service Information for details):
Direct injection permits controlling a
richer mixture around the spark plug,
making it easier to ignite when the
engine is cold. The SIDI engine runs
smoother and generates lower emissions during cold start and warm-up.
Components
The fuel delivery components of
SIDI are divided into two groups, the
low pressure system and the high
pressure system.
Low side components are essentially
the same as those in a port injection
system. The fuel tank contains a
modular reservoir assembly (fuel pump).
Fuel pressure in the low side is approximately 60 psi (410 kPa).
Low pressure lines deliver the fuel
from the in-tank fuel pump to the
engine compartment.
A stainless steel pipe, containing the
fuel pulse dampener and fuel pressure
SIDI Service Highlights
Fuel pulse dampener
– Cylinder Power Balance
of the cylinder head. It is driven by extra
lobes on the camshaft. This pump is
capable of delivering fuel at a pressure
of 2,176 psi (15,000 kPa).
– Fuel Injector Balance
The high
pressure pump
incorporates the
fuel rail pressure (FRP)
regulator. The
FRP is operated
by the ECM,
using pulse
width modulation, to provide
the fuel pressure commandHigh pressure pump
ed by the ECM.
And the high pressure pump also
incorporates a pressure relief valve.
– Fuel System High Pressure
Reduction
The fuel rail delivers fuel from the
pump to the injectors. A fuel pressure
sensor is attached to the fuel rail, and it
contains a diaphragm and strain gauges.
Both the fuel rail and pressure sensor
are made of stainless steel. A siliconefree lubricant should be used before
mounting the sensor.
Electro-magnetic fuel injectors are
used. They mount to the cylinder head
and spray fuel directly into the combustion chamber. Precision-machined holes
generate a cone shaped spray pattern.
The injector hold-down clamp must be
replaced if removed.
The ECM contains a converter that
steps up voltage from 12V to 65V and
charges a capacitor. The capacitor
– Fuel Pressure Control
– Fuel Pump on/off
Low side system pressure relief is
the same as with standard fuel injection
systems.
High side system pressure relief can
be done two ways:
– Turn off the engine and wait at least
two hours, then cover the high
pressure fitting with a shop towel
and loosen
– Use a scan tool to command the
fuel pump relay off, run the engine
until it stops (approximately 30
seconds). Turn off the ignition and
confirm fuel pressure with the
scan tool.
To remove and service injectors, it
may be necessary to use special tools.
Check the Service Information for more
details about the right tools.
When removing injectors, the following must be discarded and replaced:
– fuel injector hold-down clamps
– O-rings
– plastic spacers
– fuel injector seal
When removing the high pressure
fuel pump, the following must be
discarded and replaced:
– fuel pump bolts
– fuel pump gasket and O-ring
Fuel tank and low pressure lines
– high pressure fuel pipe
service valve, connects the fuel line to
the high pressure pump. The fuel pulse
dampener may have an audible clicking
sound when the engine is idling.
The high side starts at the high pressure pump, which is located at the rear
Fuel injector with precision-machined holes
3
When installing the high pressure fuel
pump, be sure the roller lifter is oriented
properly, the camshaft is at base circle,
and the number 1 piston is at top dead
center (TDC) on the exhaust stroke.
– Thanks to Mike Militello and
GM Powertrain
The Return of the Camaro
Handling
On V8 models, the StabiliTrak electronic stability control
system includes a Competitive Mode that limits StabiliTrak
and ABS intervention for competitive driving venues.
V8 models with a manual transmission also offer Vehicle
Launch Control, which uses traction control and torque
management to minimize wheelspin and optimize straight-line
acceleration. When the accelerator pedal is pressed to the
floor with the clutch engaged, the RPM is limited to a
predetermined level. Releasing the clutch while keeping the
accelerator pedal pressed to the floor provides controlled
wheelspin and acceleration.
Four-wheel discs
are provided with
ABS, ranging from
12.6-inch front and
12.4-inch rear discs,
vented with 1-piston
calipers, on LS/LT
models and 14-inch
front and 14.4-inch
rear discs, vented
with Brembo
4-piston calipers,
on SS models.
Ever since production ended in 2002, Camaro enthusiasts
have been anxiously awaiting the return of their favorite pony
car. Well, the wait is over.
The 2010 Camaro returns with all the classic styling cues —
the prominent grille with recessed headlamps, the SS front
air scoop, the gills on the rear quarters, dual exhaust outlets,
and even the auxiliary instrumentation on the console. Here’s
a closer look behind the retro-inspired sheet metal of the
new Camaro.
Performance
The base engine is the 3.6L (LLT) VVT direct injected DOHC
V6. With variable valve timing and dual overhead camshafts, it
generates 304 HP (227 kW) and 273 lb-ft (370 Nm) of torque.
Wheels and tires
The Camaro SS features Brembo
range from 18 to 20
4-piston calipers on 14-inch front and
inches, including
14.4-inch rear disc brakes.
summer tires on SS
models. It is highly recommended that owners purchase
winter tires if they plan to drive the Camaro SS in winter.
In addition to direct injection, advanced features of the
engine include variable valve timing, roller chain cam drive,
and piston cooling jets for lower temperature and increased
durability.
Interior
For those wanting more power, there are two versions of
the 6.2L OHV V8. In cars with an automatic transmission, the
V8 (L99) offers 400 HP (298kW) and 410 lb-ft (556 Nm) of
torque. With a manual transmission, the
V8 (LS3) offers 426
HP (318 kW) and
420 lb-ft (569 Nm)
of torque. The L99
engine also comes
with Active Fuel
Management that
shuts down four
cylinders based on
driving conditions for
better fuel economy.
All feature aluminum
block and heads.
The Camaro has a number of unique interior features. It
uses a window indexing feature to help eliminate wind noise.
The windows open slightly when the door is opened, and
then move back to the closed position when the door is
closed. This feature must be reset if battery power is
disconnected.
Auxiliary analog
gauges on the
console (certain
models) include
oil pressure, battery voltage, oil
temperature and
transmission fluid
temperature.
The heavy
duty battery,
with rundown
protection and
retained accessory power, is located in the trunk,
The auxiliary analog gauges are
a nod to Camaros past.
contributing to
the 52%/48%
weight distribution. The accessory power outlets shut down
when the vehicle is turned off to further enhance the rundown
protection capability.
– Thanks to Marty Case and Chris Graham
Two 6-speed
manual transmissions are available
with either the V6
or V8 engine. The
The 6.2L V8 with an automatic
transmission produces 400 HP.
available 6-speed
automatics — the
6L50 transmission on the V6 and the 6L80 transmission on
the V8 — feature TAPshift, which enables the transmission to
be shifted manually with steering wheel paddles. Performance
Algorithm Liftfoot (PAL) detects performance driving and holds
upshifts and downshifts. Additionally, the 6L80 on V8s has an
internal cooler.
4
OEM Saab Diagnostics
The move of independent repair facilities toward OEM scan
tools has been gaining momentum in the last few years,
driven mainly by the increased complexity of vehicle networks
and the lack of software coverage from traditional aftermarket
scan tools. Many ACDelco TSS shops have invested in the
Vetronix/Bosch Tech 2, which has been the OEM scan tool in
General Motors dealerships worldwide since 1997. Saab has
been using the Tech 2 in their franchised dealerships since the
late 1990’s, but the software has been difficult to obtain in the
aftermarket until now.
With the introduction of TIS2Web in late 2007, available via
www.acdelcotechconnect.com, independent service centers
can now purchase OEM diagnostic software for Saab to be
used in their Tech 2. Software coverage spans from 1988 to
the current model year and covers the 900, 9000, 9-3, 9-5 and
9-7X models.
Tech 2 software coverage includes full OEM powertrain,
chassis and body systems, including recoding, output controls
and customer configuration settings. A quick system check
allows the technician to request DTCs from all vehicle control
modules in less than ten seconds, dramatically decreasing
diagnostic time and increasing repair productivity.
Check for DTCs quickly with OEM software.
Authentic GM 32MB PCMCIA cards (part number
02002994-001) can be purchased directly from Bosch
Diagnostics customer support at 1-800-321-4889. The Saab
10-pin DLC connector (part number 02002965), required for
1995–older vehicles, also is available.
There are three separate software loads required for full
Saab coverage, so shops must purchase additional 32MB
PCMCIA cards if support for the entire product line is desired.
For shops that currently own a Tech 2 with the 32MB PCMCIA
card loaded with GM North American software, the 9-7X
model is already included, since it shares a platform with the
Chevrolet TrailBlazer and GMC Envoy. The remaining models
are on two separate software loads, requiring two additional
32MB PCMCIA cards.
Software can be purchased on an annual subscription basis
and includes Saab Service Programming reflashing software
with current calibrations. Saab Service Information also can
be purchased on an annual subscription basis from
www.acdelcotechconnect.com.
– Thanks to Bob Augustine
Measuring Voltage Drop
motors may be damaged by excessive voltage drop.
Voltage drop is the reduction in
voltage in an electrical circuit
between the source and load.
Another way to look at it is the
difference in voltage potential
between two points.
When performing voltage drop
checks, the circuit being tested
must be operational. With the
positive lead of the DMM connected to one point of the circuit and
the negative lead connected to the
other point, operate the circuit to
get the difference in voltage
between the two points.
A voltage drop check is a more
accurate indication of the condition
of a circuit than a resistance check.
Imagine a 12-gauge wire with all
but one strand of wire cut. The
circuit would have good continuity
if checked with a Digital Multimeter
(DMM), but once current was
forced through the circuit, it would
undoubtedly fail.
When checking the integrity of
a ground circuit, use the best
ground on the vehicle — the
battery’s negative post. Likewise,
when checking the circuit’s power
side, use the battery’s positive post
There will always be a certain
as the starting point. Generally,
amount of voltage drop in any
The DMM will display the voltage drop
anything over a 0.5 volt drop on
electrical circuit. This is because
between two points.
either the power or ground side is
voltage is lost as it passes through
considered excessive drop for
a conductor due to the resistance
most circuits, but always refer to
of the conductor. However, excespublished Service Information for exact specifications.
sive voltage drop in a circuit on either the power or ground
side will result in poor operation of electrical components as
– Thanks to Mike DeSander
less voltage is available to operate the load. In fact, electrical
5
Recruit New Technicians
with GM ASEP
Registered vehicles in the U.S. now outnumber licensed
drivers. That means more vehicles with more technology
coming into automotive service centers today and in the
future. It’s also why there continues to be a growing need
for automotive technicians. Each year, the Bureau of Labor
Statistics lists the need for automotive technicians as one of
the nation’s highest.
Student and
Service Center
Responsibilities
Students:
Finding qualified technicians is getting tougher. As vehicles have become
increasingly complex, the skills and specialized training needed by the next
generation of technicians to repair them can’t be picked up at the local gas station
or in high school shop class.
– Must be high school graduates and
accepted into a participating college
One way to successfully recruit new technicians is through the GM Automotive
Service Educational Program (ASEP).
– Are required to wear a provided
work uniform during school and
at work
GM ASEP is designed to bring TSS accounts together with qualified students
who want to pursue a career as an automotive technician. ASEP students attend
classes for eight to ten weeks at a college that participates in the program. Then
the students work in their sponsoring service center for a similar period of time.
In addition to automotive courses, ASEP students take courses in math, science,
and communication skills. During the two-year sponsorship, service centers are
responsible for providing uniforms, paying an hourly wage while working in the
shop, and assigning a technician to act as a mentor to the student.
At the end of the program, the student graduates with an Associate Degree in
automotive technology and the TSS service center has a new technician who has
trained at the shop and also has knowledge of the latest diagnostic procedures,
equipment, and information technology.
Looking for a student to sponsor? An ASEP college will provide a list of
qualified candidates for an interview. The first step is to contact the participating
college in your area. There are more than 60 ASEP schools in the country. For the
complete list of ASEP colleges, go to www.gmasep.com, or call
1-800-828-6860.
– Thanks to Staci Shelton
New Brake
Parts Cleaner
Available
ACDelco has recently introduced a
new, improved low Volatile Organic
Compound (VOC) non-chlorinated
brake parts cleaner, part number
10-6012. This product replaces part
number 10-111.
The new brake parts cleaner is
specially formulated to remove oil,
grease, brake fluid, dirt and contaminants from brake components,
including brake shoes, drums, springs,
brake plates, calipers, pads and rotors.
It’s also an effective cleaner for clutch,
transmission and engine parts.
– Thanks to Mike DeSander
6
– Must maintain a TSS service center
sponsorship
– Are responsible for all program
costs, including tuition, fees, books
and tools. Tuition assistance and
tool discounts may be available.
Service Centers:
– Must pay for uniforms
– Must pay the student an hourly
wage while providing work
experience in accordance with the
program schedule
– Must provide an in-shop coordinator
– Must participate in the appropriate
ASEP advisory committee meetings
The following technical tips provide repair information about specific conditions on a variety of vehicles. If you have a tough or unusual
service repair, the TSS Technical Assistance Hot Line can help. Call 1-800-825-5886, prompt #2, to speak with a technical
expert with the latest OEM information.
electrical components that are activated
or that are in use while the battery is
being charged in the vehicle.
Service Charging System
Message on DIC
2005-2009 Chevrolet Corvette;
2004-2009 Cadillac XLR
The maximum voltage for vehicle
electrical components is approximately
15 volts. Battery chargers generate at
least 15 volts, and in some cases, as
much as 20 volts under the high
charge setting.
A Service Charging System message
may be displayed on the Driver
Information Center (DIC) along with a
stored DTC P0621. This condition may
be a result of aftermarket spark plugs or
an open in circuit number 2540.
Check for aftermarket spark plugs.
Plugs that are designed with a “pulse”
technology may interfere with this
circuit and cause the Service Charging
System message in the DIC and/or
P0621 DTC to store in the ECM. If
aftermarket plugs are installed, replace
the plugs with OEM parts.
Also, try the horn to see if it works.
If the horn does not work, suspect an
open fuse. Circuit 2540 is supplied
voltage from the horn fuse, position 2
in the UBEC. This fuse may open if the
horn is shorted due to water intrusion.
If the horn is functional, check the
integrity of circuit 2540 between the
UBEC and the generator. Refer to the
appropriate Service Information. Repair
circuit 2540 as needed.
V Engine Cylinder Bank
Naming
GM vehicles equipped with a V
engine
GM uses two methods of naming
cylinder banks in V engines.
For emission related components,
cylinder banks are named using a
Society of Automotive Engineers (SAE)
recommended practice. Bank 1 is the
cylinder bank that has the number 1
cylinder, and bank 2 is the cylinder bank
that does not have cylinder 1. Cylinder 1
location is given in Service Information
category Engine Mechanical.
For other than emission related
components, cylinder banks are named
Left and Right. This is determined by
looking toward the front of the engine
from the flywheel end. This method is
used whether the engine is installed
longitudinally or transversely.
Discharged Battery, Slow
Starting
Hairline cracks on the brake pads
do not affect performance.
Brake Pad Cracks
2007-2009 Chevrolet Silverado
3500HD; 2007-2009 GMC Sierra
3500HD — with brake RPO JK4 or JH7
When performing a brake inspection
on a 2007-09 Chevrolet Silverado
3500HD or GMC Sierra 3500HD with
brake RPO JK4 or JH7, hairline cracks
may be noticed in the pad friction
material.
Cracks in the friction material can
occur after the pads have been subjected to high pad temperatures.
These hairline cracks do not affect
the operation of the brake system and
the pads should not be replaced if only
hairline cracks are found.
Battery Charging
Precautions
1995-2007 Mazda B-Series;
1997-2003 Mazda Protégé; 1997-2005
Mazda Miata; 1997-2002 Mazda 626;
1997-2002 Mazda Millenia; 1997-2006
Mazda MPV; 2001-2006 Mazda Tribute;
2003-2007 Mazda6; 2004-2007 Mazda3;
2004-2007 Mazda RX-8; 2006-2007
Mazda5; 2006-2007 Mazda MX-5;
2007 Mazda CX-7
When attempting to re-charge a fully
discharged battery, remove it from the
vehicle. If a sulphated battery is charged
in the vehicle with the battery cables
connected and the charger is set to the
high charge setting, excessive voltage
produced by the charger may result in
damage to the Powertrain Control
Module, audio system, memory back-up
circuits and other electrical devices.
Damage may also occur to other
7
1997-1998 Buick Skylark; 1997-1998
Chevrolet Cavalier and Malibu; 19971998 Oldsmobile Achieva and Cutlass;
1997-1998 Pontiac Grand Am and
Sunfire – with 2.2L, 2.4L, 3.1L engines
(RPOs LN2, LD9, L82)
The battery may be weak or
discharged, the starting motor may turn
slowly, or the generator may not be
charging.
Check for a loose generator output
and battery positive cable terminal at
the starting motor. This may cause a
high resistance in the battery positive
circuit from the generator to the battery.
Also inspect the condition of the
starting motor B+ stud, wire, ring
terminals and nut.
If these conditions are found,
the generator and battery should not
be damaged and will not require
replacement.
Diagnostic Assistance
For free technical diagnostic
assistance and product information
regarding specific ACDelco products,
contact these toll-free information
hotlines staffed by ASE-certified
technicians:
Brakes – 1-888-701-6169 (prompt #1)
Chassis – 1-888-701-6169 (prompt #2)
Clutches – 1-888-725-8625
Lift Supports – 1-800-790-5438
Shocks – 1-877-466-7752
Starters and Alternators –
1-800-228-9672
Steering – 1-866-833-5567
Wiper Blades – 1-800-810-7096
Go to www.acdelcotechconnect.com and click on
the Training tab to log on to the ACDelco Learning
Management System (LMS).
New Training
The following ACDelco training programs have
recently been made available via the LMS:
Current Instructor-Led Training
ACDelco’s Instructor-Led Training (ILT) courses provide hands-on
instruction on the latest automotive systems. The following ILT
courses are currently being held at training center locations around
the country.
Course Number
Course Name
TechAssist Training (TAS)
S-EL06-31.01TAS
Toyota Reprogramming
S-EL06-32.01TAS
Chrysler Reprogramming
Web-Based Training (WBT)
S-EP08-20.01WBT
Toyota Engine Performance
S-AC07-06.01WBT
Toyota HVAC
S-EP08-21.01WBT
Chrysler Engine Performance
S-AC07-07.01WBT
Chrysler HVAC
New 6.6L Duramax
Diesel Fuel Filter
A new fuel filter (12633243/TP3012) is now available
for all 2001-2009 Chevrolet and GMC C/K models and
2003-2009 Chevrolet and GMC C4500/5500 series vehicles with the 6.6L Duramax Diesel. It has been designed
to offer better protection in engines that may use an
unreliable fuel source with potential water conditions.
Compared to the existing dual pleat design filter,
the new coalescer filter provides the following
improvements:
– Significantly improved water separation with both
diesel and biodiesel blended fuels to protect fuel
injectors and pumps from corrosion.
– 1.5 to 2 times the
contaminant capacity,
depending on the type
of contaminants in the
fuel. (Longer life/less
prone to plugging
problems and better
performance at high
altitudes.)
– Improved resistance
to cold weather plugging with diesel and
biodiesel improperly
blended or additized for
cold operation.
Please note that the new
fuel filter (12633243/TP3012) will be shipped in boxes
labeled with a different part number (98081884/TP3012)
until the current inventory of boxes is exhausted.
For more information, refer to ACDelco Bulletin
#09D-068.
– Thanks to Mike Militello
TS-PU-0009-09
S-AC07-02.01ILT
Automotive Air Conditioning: Advanced
Refrigerant System Diagnostics
S-AC07-03.01ILT
HVAC Control System Operation and
Diagnostics
S-AC07-06.01ILT
Toyota HVAC
S-AC07-07.01ILT
Chrysler HVAC
S-BK05-01.01ILT
Braking Systems
S-EL06-04.01ILT
Body Control Systems Diagnostics
S-EL06-04.02ILT
Network Communication Diagnosis
S-EL06-10.01ILT
Battery, Charging, & Starting
S-EL06-10.02ILT
Electrical Power Management
S-EL06-11.01ILT
Automotive Electrical Circuit Diagnosis and
Repair
S-EL06-12.01ILT
Hybrid Technology and Service
S-EP08-02.01ILT
Engine Performance: Computer Controls and
Ignition System Diagnostics
S-EP08-03.01ILT
Engine Performance: Air Induction and Fuel
System Diagnostics
S-EP08-04.01ILT
Engine Performance: Fault Monitoring and
Emission System Diagnostics
S-EP08-05.01ILT
Engine Performance: Advanced Drivability
Diagnostics
S-EP08-20.01ILT
Toyota Engine Performance
S-EP08-21.01ILT
Chrysler Engine Performance
S-EP08-81.01ILT
Duramax 6600: Diesel Engine Performance
S-SS04-01.01ILT
Vibration Correction Diagnostics
S-ST10-01.01ILT
Supplemental Restraint Systems
8