PI0850

Bulletin No.: PI0850
Date: Nov-2012
Subject:
Whistle Noise Heard from Engine Compartment, Rough Idle and/or DTC P0171 Set
Models:
2011-2012 Chevrolet Cruze
Equipped with 1.4L Engine (RPO LUJ)
Condition/Concern
Some customers may comment on a whistle noise heard from the engine compartment and/or the vehicle runs rough with the service engine light on.
This may be caused by a vacuum leak in the positive crankcase ventilation (PCV) located on the camshaft cover.
Recommendation/Instructions
Note: The old style camshaft cover has a taller design PCV cap as shown in the illustration above.
Note: The new design camshaft cover has a flatter/lower cap as shown in the illustration above.
With the engine running using your finger, place it over the breather port of the PCV diaphragm to see if the whistle noise goes away and/or the fuel trims are
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high then return to normal levels.
If the noise goes away, replace the camshaft cover and clear the DTC.
Parts Information
Part Number
Description
55573746
Camshaft Cover
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation
Description
Labor Time
J0309
Camshaft Cover Replacement
Use Published Labor
Operation Time
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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