Bulletin No.:

Service Bulletin

Date:

19-NA-078
January, 2020

WARRANTY ADMINISTRATION
Subject:

Warranty Administration - Premature or Accelerated Tire Wear On Vehicles Equipped
with Various Sizes of Michelin Premier LTX Tires
This Bulletin is replacing 18-NA-274. Please discard 18-NA-274.

Model Year:

Breakpoint:

Brand:

Model:

Buick

Envision

Cadillac

XT5

Chevrolet

Equinox

2018

Acadia
(VIN N)

2017

2017

Acadia

2018

2019

Terrain

2018

2020

GMC

from
2017

to

from

to

-

-

Engine:

Transmission:

2020
-

-

Involved Region or Country

North America

Additional Options (RPOs)

Equipped with Michelin Premier LTX TIRE ALL- 225/65R17 102H 1467MS , 225/60R18
SL 100H BW AL3 ,TIRE ALL-235/65R18 SL 106H BW AL3 VAR1 , TIRE 245/65R17
107H 1491MS, TIRE 235/55R20 102H 1493MS (RPOs 5CX, RUB, QMV, QML, QNU)

Condition

Some customers may comment their tires are not meeting tread depth expectations, or
wearing out (reaching 2/32 in (1.6 mm)) too quickly.
This condition may be caused by vehicle alignment issues and/or normal tire
performance attributes.
For specific tire sizes, there is a new, alternative GM Approved tire available. Please note
the additional information and specifications later in this bulletin.

Cause

Copyright 2020 General Motors LLC. All Rights Reserved.

⇒ Modern tire compounds in these tires provide increased performance levels
throughout its service life, delivering higher levels of grip even when partially
worn. Due to these compound changes, vehicle mileage at the time the tires
show 4/32 in (3.2 mm) may be less than what customers have experienced
with other tires.

Page 2

Correction

January, 2020

Bulletin No.: 19-NA-078

Step 1
If vehicle exhibits lead or pull symptoms, and mileage is below 12,000 miles (19,000 km),
check the vehicle alignment to ensure it is within acceptable range.
If a vehicle with less 12,000 miles (19,000 km) exhibits these symptoms and the
alignment requires adjustment to meet GM specification, the dealership is to properly
align the vehicle and submit a warranty transaction using Labor Code 8070032 Wheel
Alignment Measurement. This exception applies only to vehicle/tire combinations
specified in this bulletin. For all others, continue to follow normal warranty policies limiting
alignment coverage up to 7500 miles (12,000 km).
Step 2
If the vehicle tires measure 4/32 in (3.2 mm) or less, customers within the Bumper to
Bumper warranty (Canada Base Warranty) may be offered replacement tires on a
pro-rated basis. Please utilize the pro-ration chart below, unique to the applicable vehicle/
RPO combinations found in this bulletin. DO NOT use the pro-ration chart found in the
vehicle owner’s manual.
• Tire replacement under warranty does not apply to situations outside of this bulletin,
such as replacement necessitated by road damage, improper inflation, racing or flat
spotting.
• The special tire pro-ration chart provided in this bulletin only applies to premature tire
wear at 4/32 in (3.2 mm) or less, or tire wear resulting from alignment issues under
12,000 miles (19,000 km).
• There is a new, GM approved alternative tire with improved wear performance that is
available for the 17” Acadia RPO QML, and 18” Equinox/Terrain/Envision RPO RUB.
Please see below for additional information and specifications.
For Acadia / XT5 equipped with (RPO QML, QMV, QNU) tires: For customers that want
GM approved tires, though request an alternative service replacement tire, there is
another tire that may be offered as a replacement for the 18”size, the Continental Cross
Contact LX20 235/65R18 106H, TPC #3126MS (RPO QMX).
For replacement of the 20” size, (RPO QNU) please continue to utilize the Premier LTX
tires referenced below in the parts information.
There is a new, GM approved service replacement tire with improved treadwear
performance that is available for the 17” size (RPO QML). This tire is the Michelin
Primacy Tour A/S 245/65/R17 107H TPC# 3175MS. When utilizing this alternative tire,
please replace the tires in quantities of 4, tire models (Primacy and Premier LTX) cannot
be mismatched or have different tires on the same vehicle.
For Equinox / Terrain / Envision equipped with (RPO 5CX, RUB) tires: Use only
approved Michelin Premier LTX replacement tires TPC# 3106MS (RPO RUB).
There is a new, GM approved service replacement tire with improved treadwear
performance that is available for the 18” size (RPO RUB). This tire is the Michelin
Primacy Tour A/S 225/60/R18 100H TPC 3174MS. When utilizing this alternative tire,
please replace the tires in quantities of 4, tire models (Primacy and Premier LTX) cannot
be mismatched or have different tires on the same vehicle.
For replacement of the 17” size (RPO 5CX), please continue to utilize the Premier LTX
tires referenced below in the parts information.
For ordering replacement tires noted above and below, please utilize the normal tire
distribution network. If there are any issues with obtaining replacement tires, please call
the GM Tire Program. (GM Tire Program 1-877-728-4737 (U.S.A dealers). In Canada,
please order through the GM National Account Tire Program. Refer to tire proration chart
unique to this bulletin.
NOTE:
– This bulletin is ONLY applicable to the Models, Model Years, equipped with the RPO’s
noted above.
– Tire replacement and applicable proration noted below should not be utilized until the
tread depth is at 4/32 in (3.2 mm) or less.
– Tire tread depth measurements MUST be provided in the technician cause comments
of the transaction. Tires replaced under this bulletin may be subject to request of
return for engineering review as noted in the latest version of bulletin# 00-03-10-003
(in Canada, bulletin# 01-03-10-003).
– This unique bulletin proration is only applicable to vehicles that have even treadwear,
and documented tire rotations performed.
– This bulletin is only applicable to treadwear performance complaints. All other
manufacturing defects refer to in the latest version of bulletin# 00-03-10-003
(in Canada, bulletin# 01-03-10-003).

Bulletin No.: 19-NA-078

January, 2020

Page 3

Service Procedure
Refer to Tire Dismounting and Mounting in SI.

Parts Information
Causal
Part

N/A*

Description

Part
Number

Michelin Primacy
Tour A/S, (RPO
QML) 245/65R17
BW 107H TPC
3175MS (Acadia)

84752904

Michelin Premier
LTX, (RPO QMV)
235/65R18 106H
TPC 1492MS
(Acadia / XT5)

22996331

Continental Cross
Contact LX Sport
(RPO QMX) 235/
65R18BW 106H
TPC 3126MS
(Acadia / XT5)

84458189

Michelin Premier
LTX, (RPO QNU)
235/55R20 BW
102H TPC
1493MS (Acadia
/ XT5)

22996332

Michelin Premier
LTX, (RPO 5CX)
225/65R17 BW
102H TPC
1467MS (Equinox
/ Terrain)

22928882

Michelin Primacy
Tour A/S, (RPO
RUB) 225/60R18
BW 100H TPC
3174MS (Equinox
/ Terrain /
Envision)

84727761

Qty

4

*For warranty transactions, DO NOT mark this/these parts
as the Causal Part. Enter the word “Bulletin” in the Causal
Part Description free-flow text field.

Proration table for vehicles covered by a 3yr/36,000
miles bumper to bumper warranty (3yr/60,000 km
Canada Base Warranty)
U.S.A Mileage (mi)

Canada Kilometres (km)

Customer Participation
(Tire Cost Including
Markup)

Customer Participation
(Labor - Mount and
Balance)

0 – 12,000

0 – 19,000 km

0%

0%

12,001 – 15,000

19,001 – 24,000 km

20%

0%

15,001 – 20,000

24,001 – 32,000 km

25%

0%

20,001 – 25,000

32,001 – 40,000 km

33%

0%

25,001 – 30,000

40,001 – 48,000 km

42%

0%

30,001 – 36,000

48,001 – 60,000 km

50%

0%

36,000+

60,000+ km

100%

100%

Page 4

January, 2020

Bulletin No.: 19-NA-078

Proration table for vehicles covered by a 4yr/50,000
miles bumper to bumper warranty (4yr/80,000 km
Canada Base Warranty)
U.S.A Mileage (mi)

Canada Kilometres (km)

Customer Participation
(Tire Cost Including
Markup)

Customer Participation
(Labor - Mount and
Balance)

0 – 12,000

0 – 19,000 km

0%

0%

12,001 – 15,000

19,001 – 24,000 km

20%

0%

15,001 – 20,000

24,001 – 32,000 km

25%

0%

20,001 – 25,000

32,001 – 40,000 km

33%

0%

25,001 – 30,000

40,001 – 48,000 km

42%

0%

30,001 – 36,000

48,001 – 60,000 km

50%

0%

36,001 – 40,000

60,001 – 64,000 km

60%

0%

40,001 – 45,000

64,001 – 72,000 km

67%

0%

45,001 – 50,000

72,001 – 80,000 km

75%

0%

50,000+

80,000+ km

100%

100%

Warranty Information
Note: Tires replaced under warranty will continue to be
covered for the remaining portion of the
Bumper-to-Bumper New Vehicle Limited Warranty.
Proration charts would apply based on the mileage
accumulated from the time of the installation of the
replacement tire through the end of the vehicle’s
Bumper-to-Bumper Warranty term.
Note: Only select the Labor Operation that
corresponds with the repair performed.
For vehicles repaired under the Bumper-to-Bumper
coverage (Canada Base Warranty coverage), use the
following labor operation. Reference the Applicable
Warranties section of Investigate Vehicle History (IVH)
for coverage information.
Labor Operation

Description

Labor Time

8080468*

Warranty Administration - Michelin / Uniroyal / BF Goodrich
Tire Replacement

0.4 hrs.

Add

To Replace - Each Additional

0.3 hrs.

8070032

Wheel Alignment Measurement

Use the Published Labor
Operation Time

*This is a unique Labor Operation for Bulletin use only.

Once a customer agrees to tire replacement and their
responsible proration amount, the dealer must
complete a Tire Pre-Repair Authorization (PRA). To
generate a Pre-Repair Authorization, go to the Main/
home page in GWM and select Search/Create a
Pre-Repair Authorization Document.

Bulletin No.: 19-NA-078

January, 2020

Page 5

Version

2

Modified

Released April 25, 2019
Revised January 17, 2020 – Revised to add 2020 Model Year and update the Part
Information including applicable information listed in the Bulletin.

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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