Premature or Accelerated Tire Wear On Vehicles Equipped with Various Sizes of Michelin Premier LTX Tires – 2017-2020 Buick Cadillac Chevrolet GMC

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S lletin
Bulletin No.: 19-NA-078
Date: June, 2020

WARRANTY ADMINISTRATION
Subject:
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:
Model Year:
Breakpoint:
Engine:
Transmission:

Buick Envision
Cadillac XT5
from to

2017
2020
from to

Chevrolet

Equinox Blazer

2018
2019

2020 – – –
–

GMC
Acadia (VIN N) Acadia Terrain
2017
2018
2018
2017
2019
2020

Involved Region or Country Additional Options (RPOs)
Condition

Cause

North America
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)
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.
⇒ 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.

Correction

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, 18” Acadia / XT5 RPO QMV, 20” Acadia / XT5
/ Blazer RPO QNU, 17” Equinox / Terrain RPO 5CX, and 18” Equinox/Terrain/Envision RPO RUB. Please
see below for additional information and specifications.
For Acadia / XT5 Blazer 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 customers that request replacement Michelin tires, there is a new, GM approved service
replacement tire with improved treadwear performance that is available for the 18” size, the
Michelin Primacy Tour A/S 235/65/R18 106H, TPC #3176MS (RPO QMV). 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 20” size, there is also a new, GM approved service replacement tire with
improved treadwear performance, the Michelin Primacy Tour A/S 235/55R20 102H, TPC# 3177MS (RPO
QNU). 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.
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:.
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 there is also a new, GM approved service replacement tire with
improved treadwear performance, the Michelin Primacy A/S 225/65R17 102H TPC# 3159MS (RPO 5CX). 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 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.

Service Procedure

– 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).

Refer to Tire Dismounting and Mounting in SI.
Parts Information

Causal Part

N/A*

Description
Michelin Primacy Tour A/S, (RPO QML) 245/65R17 BW 107H TPC 3175MS
(Acadia)
Michelin Primacy Tour A/S (RPO QMV) 235/65R18 BW 106H TPC 3176MS
(Acadia / XT5)
Continental Cross Contact LX Sport (RPO QMX) 235/65R18BW 106H TPC
3126MS (Acadia / XT5)
Michelin Primacy Tour A/S (RPO QNU) 235/55R20 BW 102H TPC 3177MS
(Acadia / XT5 / Blazer)
Michelin Primacy A/S (RPO 5CX) 225/ 65R17 BW 102H TPC 3159MS (Equinox
/ Terrain)
Michelin Primacy Tour A/S, (RPO RUB) 225/60R18 BW 100H TPC 3174MS
(Equinox / Terrain / Envision)

Part Number

84752904

84752905

84458189

84752906

84337546

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)

0 – 12,000
12,001 – 15,000
15,001 – 20,000
20,001 – 25,000
25,001 – 30,000
30,001 – 36,000
36,000+

Canada Kilometres (km)

0 – 19,000 km
19,001 – 24,000 km
24,001 – 32,000 km
32,001 – 40,000 km
40,001 – 48,000 km
48,001 – 60,000 km
60,000+ km

Customer Participation (Tire Cost Including Markup)
0%
20%
25%
33%
42%
50%
100%

Customer Participation (Labor – Mount and Balance)
0%
0%
0%
0%
0%
0%
100%

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)

0 – 12,000
12,001 – 15,000
15,001 – 20,000
20,001 – 25,000
25,001 – 30,000
30,001 – 36,000
36,001 – 40,000
40,001 – 45,000
45,001 – 50,000
50,000+

Warranty Information

Canada Kilometres (km)

0 – 19,000 km
19,001 – 24,000 km
24,001 – 32,000 km
32,001 – 40,000 km
40,001 – 48,000 km
48,001 – 60,000 km
60,001 – 64,000 km
64,001 – 72,000 km
72,001 – 80,000 km
80,000+ km

Customer Participation (Tire Cost Including Markup)
0%
20%
25%
33%
42%
50%
60%
67%
75%
100%

Customer Participation (Labor – Mount and Balance)
0%
0%
0%
0%
0%
0%
0%
0%
0%
100%

Note: Tires replaced under warranty will continue to be covered for the remaining portion of the
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 (Canadian Base Warranty Item).
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
8080468*

Add 8070032

Description
Warranty Administration – Michelin / Uniroyal / BF Goodrich Tire Replacement
To Replace – Each Additional Wheel Alignment Measurement

Labor Time
0.4 hrs.

0.3 hrs.
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.

Version Modified

3
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.
Revised June 01, 2020 – Revised to add 2019 – 2020 Blazer and update information in the Correction
and Parts.
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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