08-06-01-011K

File in Section:
Service Bulletin
Bulletin No.:
Date:
06 - Engine
08-06-01-011 K
June, 2016
TECHNICAL
Subject:
Malfunction Indicator Lamp On -Check Engine Light, DTCs P0011, P0014, P0021,
P0024, P0341, P0346, P0366 or P0391 Set (Check Camshaft End Play and Perform
Action as Outlined)
Models:
2007-2009 Buick Lacrosse, Allure (Canada Only)
2007-2010 Buick Enclave
2010 Buick Lacrosse
2007-2010 Cadillac CTS Sedan, CTS Sport Wagon, SRX, STS
2008-2010 Chevrolet Equinox, Malibu
2009-2010 Chevrolet Traverse
2010 Chevrolet Camaro
2007-2010 GMC Acadia
2007-2010 Pontiac G6
2008-2009 Pontiac G8, Torrent
2007-2010 Saturn AURA, OUTLOOK
2008-2010 Saturn VUE
Equipped with 2.8L or 3.6L High Feature V6 Engine (VINs D, T, V, 7 - RPOs LP1, LLT,
LY7)
Attention:
This Bulletin also applies to any of the above models that may be Export from North
America vehicles.
This Bulletin has been revised to update the Note in Step 7 of the Correction table. Please
discard Corporate Bulletin Number 08-06-01-011J.
Condition
Some customers may comment that the check engine
light is on.
Upon investigation, the technician may find one or more
of the following DTCs stored:
• P0011
• P0014
• P0021
• P0024
• P0341
• P0346
• P0366
• P0391
Copyright 2016 General Motors LLC. All Rights Reserved.
June,2016
Page 2
Bulletin No.: 08-06-01-011 K
Correction
Step
Yes
No
1
Is the vehicle an Acadia, Enclave, Traverse or Outlook with P0011,
P0014, P0021 orP0024?
Go to Step 2
Go to Step 3
2
Reprogram the ECM. Refer to Service Bulletin 08-06-04-011 for further
information.
Do P0011, P0014, P0021 or P0024 still set?
Go to Step 3
Return vehicle
to customer
3
Important: The set OTC will determine which camshafts {bank 1 or bank
2) should be checked.
Remove the camshaft cover and check camshaft end play on both
camshafts in the suspect head using one of the methods listed below.
Is camshaft end play equal to or over 0.40 mm (0.016 in)?
Go to Step 5
Go to Step4
4
Continue diagnosis using SI and call GM Technical Assistance, if
necessary.
5
Check the gap between BOTH camshaft position actuators and the front
camshaft cap using the Camshaft Position Actuator to Front Camshaft
Cap Measurement Procedure listed below.
Does the 2.0 mm (Delphi 4 screw actuator) or 2.5 mm (Aisin 5 screw
actuator) hex (alien) wrench fit between the position actuator and cap?
Go to Step 7
Go to Step6
6
Install the camshaft thrust washers using the Camshaft Thrust Washer
Installation Procedure listed below.
See parts table for correct trust washer part number: Delphi vs Aisin
design.
-
-
-
-
Action
Note: There are two generations of replacement service cylinder heads.
New design cylinder heads do not use the thrust washers. Reference the
parts catalog or Bulletin 16-NA-085 for identification. A instruction sheet is
also provided with the new design cylinder head.
7
Replace the cylinder head and install thrust washers using the Camshaft
Thrust Washer Installation Procedure listed below.
See parts table for correct trust washer part number: Delphi vs Aisin
design.
Two methods for measuring camshaft end play:
Camshaft End Play Measurement
Procedure
Method 1: Dial Indicator
Remove the camshaft cover from the suspect
cylinder head.
2106320
2056722
Bulletin No.: 08-06-01-011 K
June,2016
Page 3
2062090
2106322
Set-up a dial indicator on the camshaft to be
measured. Set the dial indicator to measure the
axial movement of the camshaft. To minimize
measurement error, the dial indicator needs to be
on the same axis as the camshaft. A magnetic
mount can be placed on the frame rail or a piece
of steel plate can be bolted to the top of the head
as a reference surface for the dial indicator. The
dial indicator should have 0.1 mm (0.001 in) of
resolution.
•
•
Position a screwdriver or small pry bar between
the camshaft cap and camshaft lobe. Apply force
to move the camshaft rearward.
Be cautious not to damage the camshaft lobe
while applying this force.
Zero the dial indicator.
Apply force to move the camshaft forward
(towards the camshaft phasers).
Read the dial indicator. This is the end play of the
camshaft shaft.
Notice: Do not use the phaser bolt as a pry point. This
may cause damage to the camshaft sensor target
wheel or the head to camshaft cover sealing surface.
Method 2: Caliper
The caliper should have 0.1 mm (0.001 ") of resolution.
2056724
Page 4
June,2016
Bulletin No.: 08-06-01-011 K
Delphi Actuator (4 Screw Design, Use 2.0 mm Hex Wrench)
2056726
•
Position a screwdriver or medium pry bar between
the camshaft cap and camshaft lobe. Be cautious
not to damage the camshaft lobe while applying
this force.
Apply force to move the camshaft rearward.
Measure and record the distance between the
camshaft cap and the camshaft lobe.
Re-measure and record the distance between the
camshaft cap and camshaft lobe. Subtract the two
readings; this is the camshaft shaft end play.
Camshaft Position Actuator to Front
Camshaft Cap Measurement Procedure
2177223
5 Screw Aisin Design Actuator
Use a 2.5 mm hex (alien) wrench as a determination
gauge to measure the gap between the rear of the
camshaft position actuator and the front camshaft cap
of both camshafts of the suspect head.
1. Position a screwdriver or medium pry bar between
the camshaft cap and camshaft lobe.
2. Apply force to move the camshaft FORWARD. Be
cautious not to damage the camshaft lobe while
applying this force.
Important: Before performing this procedure, inspect
the rear of the camshaft position actuator. Refer to the
pictures below to determine which actuator is installed
on the vehicle. Use the appropriate procedure listed
below.
Aisin Actuator (5 Screw Design, Use 2.5 mm Hex Wrench)
2177226
3. With the camshaft moved fully FORWARD, try to
insert the 2.5 mm hex (alien) wrench between the
intake camshaft position actuator and the front
camshaft cap. It may be necessary to turn the
wrench to align the flat sides of the wrench with the
gap between the actuator and the cap.
2177225
Bulletin No.: 08-06-01-011 K
June,2016
4. If the wrench fits between the camshaft position
actuator and the front camshaft cap, it will be
necessary to replace the cylinder head assembly.
WHEN REPLACING THE CYLINDER HEAD,
ALSO INSTALL A THRUST WASHER BETWEEN
EACH CAMSHAFT POSITION ACTUATOR AND
THE FRONT CAMSHAFT CAP. See parts table
for correct trust washer part number: Delphi vs
Aisin design.
5. If the wrench DOES NOT fit between the camshaft
position actuator and the front camshaft cap, install
the camshaft thrust washers between BOTH
camshaft position actuators and the front camshaft
cap on the suspect head. Follow the Camshaft
Thrust Washer Installation procedure below. See
parts table for correct trust washer part
number: Delphi vs Aisin design.
4 Screw Delphi Design Actuator
Use a 2.0 mm hex (alien) wrench as a determination
gauge to measure the gap between the rear of the
camshaft position actuator and the front camshaft cap
of both camshafts of the suspect head.
1. Position a screwdriver or medium pry bar between
the camshaft cap and camshaft lobe.
2. Apply force to move the camshaft FORWARD. Be
cautious not to damage the camshaft lobe while
applying this force.
Page 5
CAMSHAFT POSITION ACTUATOR AND THE
FRONT CAMSHAFT CAP. See parts table for
correct trust washer part number: Delphi vs
Aisin design.
5. If the wrench DOES NOT fit between the camshaft
position actuator and the front camshaft cap, install
the camshaft thrust washers between BOTH
camshaft position actuators and the front camshaft
cap on the suspect head. Follow the Camshaft
Thrust Washer Installation procedure below. See
parts table for correct trust washer part
number: Delphi vs Aisin design.
Camshaft Thrust Washer Installation
Procedure
Special Tools
• EN 48313 Timing Chain Retention Tool (2009 and
Prior- Both Heads, 2010 LAU Engine - Both
Heads, 2010 - Left Head Only)
• EN 49982 Timing Chain Retention Tool (2010 Right Head Only)
Tip: The cylinder head gasket kit contains all the
gaskets and seals necessary to perform this repair.
1. Disconnect the engine wiring harness electrical
connectors from the intake and exhaust camshaft
position (CMP) actuator solenoid valves and
sensors.
2. Remove the intake and exhaust CMP sensor bolts
and sensors.
3. Remove the intake and exhaust CMP actuator
solenoid valve bolts and valves.
2177226
3. With the camshaft moved fully FORWARD, try to
insert the 2.0 mm hex (alien) wrench between the
intake camshaft position actuator and the front
camshaft cap. It may be necessary to turn the
wrench to align the flat sides of the wrench with the
gap between the actuator and the cap.
4. If the wrench fits between the camshaft position
actuator and the front camshaft cap, it will be
necessary to replace the cylinder head assembly
and replace both actuators. It is not necessary to
replace the camshaft position actuators on the
cylinder head that is not being replaced. WHEN
REPLACING THE CYLINDER HEAD, ALSO
INSTALL A THRUST WASHER BETWEEN EACH
1306293
Important: Rotate the crankshaft balancer bolt in a
clockwise direction ONLY.
4. Rotate the crankshaft balancer using the balancer
bolt until the camshafts are in a neutral (low
tension) position. The flats on the rear of the
camshafts will be parallel with the camshaft cover
rail(1).
Page 6
June, 2016
Bulletin No.: 08-06-01-011 K
body of the tool (2) is adjacent to the top surface of
the cylinder head (1 ). This is the approximate
installed position.
3
4
1
1306391
5. Use a paint stick to create an alignment mark on
one of the timing chain links (2) and the adjacent
tooth on the exhaust camshaft position
actuator (1 ).
6. Use a paint stick to create an alignment mark on
one of the timing chain links (3) and the adjacent
tooth on the intake camshaft position actuator (4).
7. Use an open end wrench on the hex cast into the
camshaft in order to prevent engine rotation when
loosening the camshaft position actuator bolts.
Slightly loosen the camshaft position actuator
bolts. DO NOT remove the bolts.
\
4
3
2
1858602
Important: The engine front cover is removed for
clarity in the following graphics, but NOT required to
perform the procedure.
10. Ensure that the feet (4) on the legs of the tool are
facing the front of the engine.
11. Partially expand the legs (1, 3) of the Timing Chain
Retention Tool by turning the T-shaped handle
clockwise.
12. Insert the leg of the tool (1) behind the timing chain
guide (2).
13. Continue expanding the Timing Chain Retention
Tool until the legs (1, 3) contact the timing chain.
Do not tighten at this time.
1858601
8. Unscrew the Timing Chain Retention Tool so that
the legs of the tool are retracted.
9. Insert the Timing Chain Retention Tool between
the camshaft actuators, rearward of the timing
chain until the bottom line that is scribed in the
1858603
Bulletin No.: 08-06-01-011 K
June,2016
Page 7
Important: Ensure that the foot (1) of the Timing Chain
Retention Tool is engaged into one of the link pockets
to prevent tool slippage during tightening of the Timing
Chain Retention Tool.
14. Hand tighten the Timing Chain Retention Tool. If
installed correctly, there should be a small amount
of slack in the timing chain between the camshaft
position actuator sprockets.
2173634
1858605
15. The Timing Chain Retention Tool is now properly
installed to hold the timing chain in position.
1858699
Tip: It is not necessary to completely remove the
camshaft actuator from the engine in order to install the
thrust washers.
16. Remove the intake camshaft position actuator bolt.
17. Move the camshaft position actuator forward
enough to slip the camshaft thrust washer over the
front of the intake camshaft and position it against
the cylinder head.
18. Position the intake camshaft actuator to the
camshaft and install the actuator bolt hand tight. If
necessary, slightly rotate the camshaft to engage
the timing pin.
19. Remove the exhaust camshaft position
actuator bolt.
20. Move the camshaft position actuator forward
enough to slip the camshaft thrust washer over the
front of the exhaust camshaft and position it
against the cylinder head.
21. Position the exhaust camshaft actuator to the
camshaft and install the actuator bolt hand tight. If
necessary, slightly rotate the camshaft to engage
the timing pin.
22. Remove the Timing Chain Retention Tool
EN-48313.
Page 8
June,2016
1858699
23. Tighten the intake and exhaust camshaft position
actuator bolts. Use an open end wrench on the hex
cast into the camshaft in order to prevent engine
rotation when tightening the camshaft position
actuator bolts. Verify that the paint marks on the
timing chain and camshaft position actuators are
aligned.
Tighten
Tighten the bolts to 58 N•m (43 lb ft).
24. Install the intake and exhaust camshaft position
actuator solenoid valves and bolts.
Tighten
Tighten the bolts to 10 N•m (89 lb in).
25. Install the intake and exhaust camshaft position
sensors and bolts.
Tighten
Tighten the bolts to 10 N•m (89 lb in).
26. Connect the engine wiring harness electrical
connectors to the intake and exhaust camshaft
position (CMP) sensors and actuator solenoid
valves.
Parts Information
Please check your part catalog for the cylinder head
replacement part number and order accordingly, based
on the year, model and applications.
Part Number
12630941
(Aisin Actuator
5 Screw
Design)
12632859
(Delphi
Actuator4
Screw Design)
Description
Washer, Camshaft Thrust
(2 required per head)
Bulletin No.: 08-06-01-011 K
Part Number
Description
12609249(LY7
High Output
Enclave,
Acadia,
Traverse,
OUTLOOK,)
Camshaft Assembly, Exhaust (Left)
12609250(LY7
High Output
Enclave,
Acadia,
Traverse,
OUTLOOK)
Camshaft Assembly, Intake (Left)
12604375 (LY?
High Output
Enclave,
Acadia,
Traverse,
OUTLOOK)
Camshaft Assembly, Exhaust (Right)
12609252 (LY?
High Output
Enclave,
Acadia,
Traverse,
OUTLOOK)
Camshaft Assembly, Intake (Right)
11518863
Cylinder Head Bolt
(8 required per head)
12591003
(LLT Only)
Fuel Injection Fuel Rail Crossover Tube
12591197
(LLT Only)
Fuel Feed Intermediate Pipe
Important: When ordering the cylinder head gasket for
cylinder head replacement, the kit does not include the
M11 head bolts or exhaust manifold gaskets, which will
need to be ordered separately.
For part numbers and usage of necessary gaskets,
refer to Group 00 6-Cylinder Engine of the appropriate
Parts Catalog. Saturn Retailers should refer to the
appropriate Parts & Illustration Catalog for the vehicle.
Bulletin No.: 08-06-01-011 K
June,2016
Warranty Information (Thrust Washer
Installation) (Buick Lacrosse/Allure)
For vehicles repaired under warranty, use:
Labor
Labor
Operation
Description
J7534*
Check Camshaft End Play
Right Bank
1.8 hrs**
Add
To Install Thrust Washer
Right Bank
0.4 hr
J7535*
Check Camshaft End Play
Left Bank
Add
To Install Thrust Washer
Left Bank
J7536*
Check Camshaft End Play Both
Banks
Add
To Install Thrust Washer Both
Banks
Time
Warranty Information (Thrust Washer
Installation) (Cadillac CTS/SRX/STS,
Pontiac GS)
For vehicles repaired under warranty, use:
Labor
Description
Time
J7534*
Check Camshaft End Play
Right Bank
2.0 hrs**
Add
To Install Thrust Washer
Right Bank
0.4 hr
J7535*
Check Camshaft End Play
Left Bank
2.0 hrs**
Add
To Install Thrust Washer
Left Bank
0.4 hr
J7536*
Check Camshaft End Play Both
Banks
2.4 hrs**
Add
To Install Thrust Washer Both
Banks
0.8 hr
0.4 hr
3.0 hrs**
0.8 hr
Warranty Information (Cylinder Head
Replacement) (Buick Lacrosse/Allure)
For vehicles repaired under warranty, use:
Labor
Operation
Description
Time
J7528*
Check Camshaft End Play
Right Bank
1.8 hrs**
Add
To Replace Complete Cylinder
Head Assembly Right Bank
5.5 hrs
J7529*
Check Camshaft End Play
Left Bank
2.4 hrs**
Add
To Replace Complete Cylinder
Head Assembly Left Bank
6.9 hrs
J7530*
Check Camshaft End Play Both
Banks
3.0 hrs**
Add
To Replace Complete Cylinder
Head Assembly Both Banks
7.6 hrs
*This is a unique Labor Operation for Bulletin use only. It will
not be published in the Labor Time Guide.
**This time includes R&R cam cover.
Labor
Operation
2.4 hrs**
*This is a unique Labor Operation for Bulletin use only. It will
not be published in the Labor Time Guide.
**This time includes R&R cam cover.
Labor
Page 9
*This is a unique Labor Operation for Bulletin use only. It will
not be published in the Labor Time Guide.
**This time includes R&R cam cover.
Warranty Information (Cylinder Head
Replacement) (Cadillac CTS/SRX/STS,
Pontiac GS)
For vehicles repaired under warranty, use:
Labor
Labor
Operation
Description
Time
J7528*
Check Camshaft End Play
Right Bank
2.0 hrs**
Add
To Replace Complete Cylinder
Head Assembly Right Bank
7.4 hrs
J7529*
Check Camshaft End Play
Left Bank
2.0 hrs**
Add
To Replace Complete Cylinder
Head Assembly Left Bank
7.9 hrs
J7530*
Check Camshaft End Play Both
Banks
2.4 hrs**
Add
To Replace Complete Cylinder
Head Assembly Both Banks
8.2 hrs
*This is a unique Labor Operation for Bulletin use only. It will
not be published in the Labor Time Guide.
**This time includes R&R cam cover.
June,2016
Page 10
Bulletin No.: 08-06-01-011 K
Warranty Information (Thrust Washer
Installation) (Chevrolet Equinox,
Pontiac Torrent)
Warranty Information (Thrust Washer
Installation) (Chevrolet Malibu, Pontiac
G6, Saturn AURA)
For vehicles repaired under warranty, use:
For vehicles repaired under warranty, use:
Labor
Labor
Labor
Time
Operation
Description
Time
1.4 hrs**
J7534*
Check Camshaft End Play
Right Bank
2.1 hrs**
To Install Thrust Washer
Right Bank
0.4hr
Add
To Install Thrust Washer
Right Bank
0.4hr
J7535*
Check Camshaft End Play
Left Bank
1.1 hrs**
J7535*
Check Camshaft End Play
Left Bank
1.3 hrs**
Add
To Install Thrust Washer
Left Bank
0.4hr
Add
To Install Thrust Washer
Left Bank
0.4hr
J7536*
Check Camshaft End Play Both
Banks
1.7 hrs**
J7536*
Check Camshaft End Play Both
Banks
2.3 hrs**
Add
To Install Thrust Washer Both
Banks
0.8 hr
Add
To Install Thrust Washer Both
Banks
0.8 hr
Operation
Description
J7534*
Check Camshaft End Play
Right Bank
Add
*This is a unique Labor Operation for Bulletin use only. It will
not be published in the Labor Time Guide.
**This time includes R&R cam cover.
Labor
*This is a unique Labor Operation for Bulletin use only. It will
not be published in the Labor Time Guide.
**This time includes R&R cam cover.
Warranty Information (Cylinder Head
Replacement) (Chevrolet Equinox,
Pontiac Torrent)
Warranty Information (Cylinder Head
Replacement) (Chevrolet Malibu,
Pontiac G6, Saturn AURA)
For vehicles repaired under warranty, use:
For vehicles repaired under warranty, use:
Labor
Labor
Labor
Time
Operation
Description
Time
1.4 hrs**
J7528*
Check Camshaft End Play
Right Bank
2.1 hrs**
To Replace Complete Cylinder
Head Assembly Right Bank
5.1 hrs
Add
To Replace Complete Cylinder
Head Assembly Right Bank
5.1 hrs
J7529*
Check Camshaft End Play
Left Bank
1.1 hrs**
J7529*
Check Camshaft End Play
Left Bank
1.3 hrs**
Add
To Replace Complete Cylinder
Head Assembly Left Bank
5.2 hrs
Add
To Replace Complete Cylinder
Head Assembly Left Bank
5.2 hrs
J7530*
Check Camshaft End Play Both
Banks
1.7 hrs**
J7530*
Check Camshaft End Play Both
Banks
2.3 hrs**
Add
To Replace Complete Cylinder
Head Assembly Both Banks
5.5 hrs
Add
To Replace Complete Cylinder
Head Assembly Both Banks
5.5 hrs
Operation
Description
J7528*
Check Camshaft End Play
Right Bank
Add
*This is a unique Labor Operation for Bulletin use only. It will
not be published in the Labor Time Guide.
**This time includes R&R cam cover.
Labor
*This is a unique Labor Operation for Bulletin use only. It will
not be published in the Labor Time Guide.
**This time includes R&R cam cover.
Bulletin No.: 08-06-01-011 K
June,2016
Warranty Information (Thrust Washer
Installation) (Buick Enclave, Chevrolet
Traverse, GMC Acadia, Saturn
OUTLOOK)
For vehicles repaired under warranty, use:
Labor
Labor
Operation
Description
Time
J7534*
Check Camshaft End Play
Right Bank
2.1 hrs**
Add
To Install Thrust Washer
Right Bank
1.6 hrs***
J7535*
Check Camshaft End Play
Left Bank
2.3 hrs**
Add
To Install Thrust Washer
Left Bank
1.6 hrs***
J7536*
Check Camshaft End Play Both
Banks
2.6 hrs**
Add
To Install Thrust Washer Both
Banks
2.0 hrs***
*This is a unique Labor Operation for Bulletin use only. It will
not be published in the Labor Time Guide.
**This time includes R&R cam cover.
***This time includes R&R underhood electrical center and
engine mount.
Warranty Information (Cylinder Head
Replacement) (Buick Enclave,
Chevrolet Traverse, GMC Acadia,
Saturn OUTLOOK)
Page 11
Warranty Information (Thrust Washer
Installation) (Saturn VUE)
For vehicles repaired under warranty, use:
Labor
Description
Time
J7534*
Check Camshaft End Play
Right Bank
1.5 hrs**
Add
To Install Thrust Washer
Right Bank
1.2 hrs***
J7535*
Check Camshaft End Play
Left Bank
0.8 hr**
Add
To Install Thrust Washer
Left Bank
1.2 hrs***
J7536*
Check Camshaft End Play Both
Banks
1.8 hrs**
Add
To Install Thrust Washer Both
Banks
1.6 hrs***
*This is a unique Labor Operation for Bulletin use only. It will
not be published in the Labor Time Guide.
**This time includes R&R cam cover.
***This time includes R&R engine mount.
Warranty Information (Cylinder Head
Replacement) (Saturn VUE)
For vehicles repaired under warranty, use:
Labor
Labor
Description
Time
J7528*
Check Camshaft End Play
Right Bank
1.5 hrs**
Add
To Replace Complete Cylinder
Head Assembly Right Bank
7.7 hrs
J7529*
Check Camshaft End Play
Left Bank
0.8 hr**
Add
To Replace Complete Cylinder
Head Assembly Left Bank
7.7 hrs
J7530*
Check Camshaft End Play Both
Banks
1.8 hrs**
Add
To Replace Complete Cylinder
Head Assembly Both Banks
8.0 hrs
Labor
Description
Time
J7528*
Check Camshaft End Play
Right Bank
2.1 hrs**
Add
To Replace Cylinder Head
Right Bank {Includes Build Up
and Transfer of Necessary
Parts)
8.6 hrs
J7529*
Check Camshaft End Play
Left Bank
2.3 hrs**
Add
To Replace Cylinder Head Left
Bank {Includes Build Up and
Transfer of Necessary Parts)
8.5 hrs
J7530*
Check Camshaft End Play Both
Banks
2.6 hrs**
Add
To Replace Cylinder Head Both
Banks {Includes Build Up and
Transfer of Necessary Parts)
12.5 hrs
*This is a unique Labor Operation for Bulletin use only. It will
not be published in the Labor Time Guide.
**This time includes R&R cam cover.
Labor
Operation
For vehicles repaired under warranty, use:
Operation
Labor
Operation
*This is a unique Labor Operation for Bulletin use only. It will
not be published in the Labor Time Guide.
**This time includes R&R cam cover.
Page 12
June,2016
Bulletin No.: 08-06-01-011 K
Warranty Information (Thrust Washer
Installation) (Chevrolet Camaro)
Warranty Information (Cylinder Head
Replacement) (Chevrolet Camaro)
For vehicles repaired under warranty, use:
For vehicles repaired under warranty, use:
Labor
Operation
Description
Labor
Time
Labor
Operation
Labor
Time
Description
J7534*
Check Camshaft End Play
Right Bank
1.6 hrs**
J7528*
Check Camshaft End Play
Right Bank
1.6 hrs**
Add
To Install Thrust Washer
Right Bank
0.4hr
Add
To Replace Complete Cylinder
Head Assembly Right Bank
3.4 hrs
J7535*
Check Camshaft End Play
Left Bank
1.6 hrs**
J7529*
Check Camshaft End Play
Left Bank
1.6 hrs**
Add
To Install Thrust Washer
Left Bank
0.4hr
Add
To Replace Complete Cylinder
Head Assembly Left Bank
4.6 hrs
J7536*
Check Camshaft End Play Both
Banks
2.0 hrs**
J7530*
Check Camshaft End Play Both
Banks
2.0 hrs**
Add
To Install Thrust Washer Both
Banks
0.8 hr
Add
To Replace Complete Cylinder
Head Assembly Both Banks
5.0 hrs
*This is a unique Labor Operation for Bulletin use only. It will
not be published in the Labor Time Guide.
**This time includes R&R cam cover.
*This is a unique Labor Operation for Bulletin use only. It will
not be published in the Labor Time Guide.
**This time includes R&R cam cover.
GM bulletins are intended for use by professional technicians, NOT a "do-it-xourselfer". They are written to inform these
technicians of conditions that may occur on some vehicles, or to provide mformat1on that could assist in the proper
service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a
job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your
vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the
information.
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