PIT4979C

Bulletin No.: PIT4979C
Date: Nov-2012
Subject:
Buzz Creak Rattle Squeak From Dash Area (Reposition Fuel Line/Bracket)
Models:
2007 - 2013 Escalade Models
2007 - 2013 Chevrolet Avalanche, Silverado, Suburban, Tahoe
2007 - 2013 GMC Sierra Models, Yukon Models
This PI was superseded to add a picture. Please discard PIT4979B.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern
Some owners may comment of a buzz or rattle type noise during light acceleration around 1200-2000 RPM’s. The noise may also sound like a squeak, creak or
tap which is coming from behind the instrument panel. This could be caused by the fuel line or fuel line bracket above the transmission contacting the floor pan,
see example below.
1.
Left front of transmission pan
2.
Front of vehicle
3.
Area of line contact
Recommendation/Instructions
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Reposition the fuel line/bracket down away from the floor pan.
Warranty Information
For vehicles repaired under warranty use:
Labor Operation
Description
Labor Time
J7831*
Reposition Fuel Line to Correct Noise Concern
0.3
* This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the
remaining steps do not need to be performed.
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.
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