22-NA-251

Bulletin No.:
Service Bulletin
Date:
22-NA-251
January, 2023
TECHNICAL
Subject:
Squeak/Chirp Noise from Front Axle In 2wd
This bulletin replaces PIP5653M. Please discard PIP5653M.
Attention:This bulletin only applies to the SU4
axle in pick up AND all utilities applications .
Brand:
Model:
Cadillac
Chevrolet
to
Escalade
2021
2022
Silverado 1500
(New Model)
2019
2019
Silverado 1500
2020
2021
Silverado 1500 4WD LTD (RPO J21,
VIN Digit 5 = Y)
Silverado 1500 4WD New (RPO J22,
VIN Digit 5 = D)
GMC
Model Year:
from
2022
2022
Suburban
2021
Tahoe
2021
Sierra 1500
(New Model)
2019
2019
Sierra 1500
2020
2021
Sierra 1500 - 4WD
Limited (RPO J21,
VIN Digit 5 = 9)
Sierra 1500 - 4WD
New (RPO J22, VIN
Digit 5 = U)
Yukon
Copyright 2023 General Motors LLC. All Rights Reserved.
2022
2021
2022
VIN:
from
Engine:
to
Transmission:
Page 2
January, 2023
Bulletin No.: 22-NA-251
Involved Region or Country
North America, Europe, Russia, Middle East, Israel, Palestine, Brazil (Mercosur), Bolivia
(West), Chile (West), Colombia (West), Ecuador (West), Paraguay (West), Peru (West),
Uruguay (West), Cadillac Korea (South Korea), GM Korea Company, Australia/New
Zealand, Egypt, Other Africa, South Africa
Additional Options (RPO)
F48: CHASSIS DRIVE LINE-ALL WHEEL DRIVE (AWD)/FOUR WHEEL DRIVE(4WD),
DRIVER SELECT
SU4: AXLE, FRONT, SUPPLIER A
Condition
Some customers may comment on a squeak or chirp noise in 2wd, that goes away
in 4wd.
Some customers may also describe a metallic jingle, ringing, click or tick coming from the
front of vehicle.
– Condition is easiest to duplicate in warmer ambient temperatures after approximately
30 miles of driving.
Some technicians may notice that the noise seems to be from the front left axle seal area.
Cause
This condition may be caused by a left side front axle shaft.
Correction
This condition does not affect durability and or operation of the vehicle but may be
annoying to some customers. Test drive the vehicle and confirm the noise is in fact as
described above and isolated to the front left axle seal area.
If the concern matches the conditions outlined in this document, replace the left front
wheel shaft with part number 87821660 (which will include the retainer ring and slinger).
Note: THIS REPAIR IS DIFFERENT THAN PREVIOUS REPAIR ATTEMPTS. ANY
VEHICLE THAT HAS HAD A PREVIOUS REPAIR ATTEMPTED AND/OR THE
CONDITION HAS REPEATED PRIOR TO January 27, 2022, SHOULD HAVE THIS
REPAIR PERFORMED.
Important: Service agents must comply with all
International, Federal, State, Provincial, and/or
Local laws applicable to the activities it performs
under this bulletin, including but not limited to
handling, deploying, preparing, classifying,
packaging, marking, labeling, and shipping
dangerous goods. In the event of a conflict between
the procedures set forth in this bulletin and the
laws that apply to your dealership, you must follow
those applicable laws.
Parts Information
Causal
Part
Description
Part
Number
Qty
N/A
SHAFT, FRT
WHEEL DRV
87821660
1
Warranty Information
Service Procedure
Refer to Front Wheel Drive Shaft Seal Replacement Left Side in S I or Front Wheel Drive Shaft
Replacement - Left Side (SU4) in SI.
For vehicles repaired under the Powertrain coverage,
use the following labor operation. Reference the
Applicable Warranties section of Investigate Vehicle
History (IVH) for coverage information.
Labor
Operation
Additional Information
If the vehicle returns with the same condition after part
number 87821660 has been installed, contact/set up a
TAC case and provide the following information:
1: Mileage when 87821660 was installed.
2: Current mileage
3: Any repairs/replacement to the front differential.
Version
1
Modified
Released January 04, 2023
3087088*
Description
Labor Time
Left Axle Shaft Replacement
w/Test Drive.
1.6 Hr.
*This is a unique Labor Operation for Bulletin use only.
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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