PIP5330

Bulletin No.: PIP5330
Date: Sep-2015
Subject:
Coolant Loss And/Or Coolant Odor
Models:
2015-2016 Cadillac Escalade
2014-2016 Chevrolet Corvette
2014-2016 Chevrolet Silverado 1500
2015-2016 Chevrolet Suburban, Tahoe
2014-2016 GMC Sierra 1500
2015-2016 GMC Yukon, Yukon XL
Engine 4.3L LV3 5.3 L83 6.2 L86
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern
A vehicle may have a concern with coolant loss and/or coolant odor after driving the vehicle.
Recommendation/Instructions
If the coolant is low pressure test the cooling system looking for leaks at the outer head bolts. See below
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If a leak is found the head with the concern will need to be replaced
Warranty Information
For vehicles repaired under warranty use:
Labor Operation
Description
Labor Time
4061770
Cylinder Head Replacement - Right Side
Use Published Labor Operation Time
4061790
Cyinder Head Replacement - Left Side
Use Published Labor Operation Time
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.
WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION
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