22-NA-213

Service Bulletin
Bulletin No.:
22-NA-213
Date:
May, 2023
TECHNICAL
Subject:
Wobble and/or Vibration on Hard Acceleration
Brand:
Model:
Buick
Envision
Model Year:
from
to
2017
2020
VIN:
from
to
Engine:
Transmission:
LCV
MHG
Involved Region or Country
North America
Additional Options (RPOs)
F46: CHASSIS DRIVE LINE-ALL WHEEL DRIVE (AWD)/FOUR WHEEL DRIVE(4WD)
Condition
Some customers may comment that a Wobble and/or Vibration occurs on hard
acceleration (WOT) around 30 to 70 mph (48 to 112 km/h).
Cause
This condition may be caused by a driveline vibration.
Correction
If able to duplicate the concern, record the event using the Pico Scope with the CH51450-TA246 Triple Axis Sensor:
• If the Pico reading at the above mentioned speeds is T1 lateral above 40 mg or above
30 mg with 10 mg of T3 lateral, replace BOTH the left and right front axles and axle
nuts at the same time.
• If these new, updated P/N’s have already been installed and the condition is still
present, refer to SI and/or contact TAC.
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.
Causal
Part
X
Service Procedure
Note: Axle nuts are one time use and must be
replaced.
Refer to Front Wheel Drive Shaft Replacement - Right
Side in SI and Front Wheel Drive Shaft Replacement Left Side in SI.
Parts Information
Note: Only select the parts that coincide with the repair
performed. Replace both Front Drive Axles with the P/
Ns in this bulletin only, according to the vehicle
build RPOs.
Copyright 2023 General Motors LLC. All Rights Reserved.
Description
Part
Number
Qty
SHAFT, FRT WHL
DRV HALF (2019-20
Right side with
LCV / MHG / F46)
85558608
1
SHAFT, FRT WHL
DRV HALF (2019-20
LEFT side with
LCV / MHG / F46)
85558609
1
SHAFT, FRT WHL
DRV HALF (2017-18
RIGHT side with
LCV / MHG / F46)
85558610
SHAFT, FRT WHL
DRV HALF (2017-18
LEFT side with
LCV / MHG / F46)
85558611
N/A
NUT, FRT WHL
DRV SHF
N/A
RING-FRT WHL
DRV SHF RET
(AWD only)
N/A
SEAL,PWR TRFER
U HALF SHF
(O-RING)(AWD only)
1
1
11612295
2
1
Refer
to EPC
1
Page 2
May, 2023
Bulletin No.: 22-NA-213
Warranty Information
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
Description
Labor Time
3088008*
Front Wheel Drive Half Shaft Replacement Both Sides
1.4 hr
*This is a unique Labor Operation for Bulletin use only.
Version
2
Modified
Released February 24, 2023
Revised May 10, 2023 - Change the RPO MGH to MHG in the Parts Information Section.
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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