One more time

[Bud]

Can someone give me the TSB number about

changing the intake bolts to help stop oil

burning.

I promise I will not bring it up again!

[GeoHawk]

Here ya go...

 

 

Document ID# 1159636

2001 GMC Truck GMC K Sierra - 4WD

 

 

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Subject: High Oil Consumption (Replace Intake Manifold Bolts) #02-06-01-035 - (10/17/2002)

 

 

 

Models: 2002 Chevrolet Avalanche

 

2001-2002 Chevrolet Silverado, Express, Suburban

 

2001-2002 GMC Sierra, Savana, Yukon XL

 

2001-2002 Chevrolet and GMC C6-7 Conventional Cab Medium Duty and B7 School Bus Models

 

with 8.1L Engine (VINs G, E -- RPO L18)

 

 

 

 

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Condition

Some customers may comment about higher than expected oil consumption. Because this type of engine is used under various load conditions, the dealer should verify that the vehicle is using more than 0.946L (1 quart) of oil for every 379L (100 gallons) of fuel used.

 

Cause

Oil vapor pulled into combustion chamber through the intake manifold may cause this condition.

 

Correction

Replace all the intake manifold bolts. Replace one bolt at a time in sequence to keep the intake manifold from shifting.

 

Notice: Ensure the intake manifold does not shift as the intake manifold bolts are tightened in the proper sequence. Failure to follow the entire intake manifold bolt tightening sequence exactly may result in an oil leak and serious engine damage.

 

In the order shown below, remove each bolt and replace with a new bolt. Insert the new bolt and tighten to 5 N·m (44 lb in). Then move to the next bolt in sequence until all bolts have been replaced.

 

 

 

After all of the bolts have been replaced, tighten each bolt in sequence to 8 N·m (71 lb in).

Tighten all bolts in sequence to a final torque of 12 N·m (106 lb in).

Parts Information

Part Number

Description

Qty

 

12561518

Bolt, Intake Manifold

10

 

 

Parts are currently available from GMSPO.

 

Warranty Information

For vehicles repaired under warranty, use:

 

Labor Operation

Description

Models

Labor Time

 

J0290

Bolts, Intake Manifold - Tighten or Replace

C/K, C6-7, B7

0.7 hr

 

G Van

1.5 hrs

 

 

 

 

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these 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 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.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

 

 

© Copyright General Motors Corporation. All Rights Reserved.

 

 

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Document ID# 1159636

2001 GMC Truck GMC K Sierra - 4WD