PIE0268

File in Section:
Service Bulletin
Bulletin No.:
Date:
PIE0268
August, 2013
PRELIMINARY INFORMATION
Subject:
Engineering Information – Engine Whine Noise at 1000-1900 RPMs
Models:
2011-2013 Cadillac Escalade Models
2011-2013 Chevrolet Avalanche, Silverado, Suburban, Tahoe
2011-2013 GMC Sierra, Yukon Models
Equipped with 5.3L or 6.2L Engine (RPO LC9, LMG, LH9, L94 or L9H)
Attention: Proceed with this PI ONLY if the customer has commented about this concern AND the
PIE number is listed in the Global Warranty Management / Investigate History link
(GWM/IVH). If the customer has not commented about this condition or the EI does not
show in GWM/IVH, disregard the PI and proceed with diagnostics found in published
service information. THIS IS NOT A RECALL — refer to the latest version of Service
Bulletin 04-00-89-053E for more details on the use of Engineering Information PIs.
Condition
Important: If the customer did not bring their vehicle in for this concern, DO NOT proceed with this EI.
Some customers may comment on a whine noise at low engine speeds. The whine noise can be heard inside the
vehicle under the right side of the dash near the heater core area. The noise is typically heard at speeds between
1000-1900 RPMs.
Cause
GM Engineering is attempting to determine the root cause of the above condition. Engineering has a need to gather
information on vehicles PRIOR to repair that may exhibit this condition. As a result, this information will be used to
"root cause" the customer's concern and develop/validate a field fix.
Instructions
If you encounter a vehicle with the above concern, please contact one of the engineers listed below for further
instructions. DO NOT attempt any repairs prior to calling.
Contact Information
Engineer Name
Phone Number
Lance Putrus
586-961-9067
Adam Freeman
248-836-8836
Please include the following information if leaving a message:
– Technician name
– Dealer name and phone number
– Complete VIN and repair order (R.O) number
On the repair order, document the date and time the call was placed (even if the engineer was not reached).
If engineering is unable to return the call within one hour, proceed with diagnosis and repair based on information
found in SI.
Warranty Information
If engineer was contacted or required information was provided, use:
Labor Operation
Description
Labor Time
4080168*
Engineering Information – Engine Whine Noise
0.2 hr
*This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide.