PIP5832

Service Bulletin Details

Public Details for: PIP5832

This preliminary information communicates to the dealer an issue where a vehicle may be exhibiting an engine noise condiion. The dealer is instructed on how to isolate the noise to a specific area of the engine for further diagnosis.


- 2022 - 2021 - 2020 - 2019 -

Bulletin No.: PIP5832
Published date: 12/16/2021
Preliminary Information
PIP5832 Diagnostic Tips For Engine Noises
Models
Brand:
Model:
VIN:
Model Years:
from
Engine:
to
Transmissions:
Cadillac
Escalade
2021 - 2022
All
All
6.2L L87
All
Chevrolet
Silverado
2019 - 2022
All
All
5.3L L84, 6.2L L87
All
Chevrolet
Suburban
2021 - 2022
All
All
5.3L L84, 6.2L L87
All
Chevrolet
Tahoe
2021 - 2022
All
All
5.3L L84, 6.2L L87
All
GMC
Sierra
2019 - 2022
All
All
5.3L L84, 6.2L L87
All
GMC
Yukon
2021 - 2022
All
All
5.3L L84, 6.2L L87
All
Involved Region or Country North America
Condition
Engine may exhibit an internal ticking, tapping or knocking noise that may be di cult to isolate.
Cause
Multiple possibilities
Correction:
If a noise has been determined to be coming from the engine area the following may be helpful in isolating to the upper or lower end:
Verify the noise is not coming from an accessory drive component by brie y running the engine with the accessory drive belt removed.
Using GDS2 select "Cylinder Power Balance" in Fuel System section of output control functions, cancel cylinders one by one and see if the noise is
noticeably changed.
Note - Please avoid using GDS2 control function "Cylinder Deactivation" for this procedure as it is deactivating the lifters and is intended for mis re/DFM
system diagnosis. This function can be misleading when used for noise diagnostics since it may change/eliminate a lower end noise and give the
impression it is a lifter since that is what is being commanded, potentially leading to unnecessary lifter replacement.
If the noise is changed, make a note of which cylinder(s) made the most impact on the noise.
Noises that are noticeably a ected by cylinder cancellation are typically considered a "lower end noise" (connecting rod bearing, wrist pin etc.) whereas
valvetrain noises aren't generally impacted by this procedure.
Please review appropriate SI engine noise diagnostic for further isolation of a speci c component.
Version History
Version
Modi ed
1
12/16/2021 - Created on.
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