Bulletin No.:
Date:

14040
May 2014

Program Bulletin
CUSTOMER SATISFACTION PROGRAM
SUBJECT:

Front Strut - Noise

MODELS:

2012-2013 Chevrolet Colorado
2013 Chevrolet Trailblazer

CONDITION
On some 2012-2013 model year Chevrolet Colorado/Trailblazer vehicles, squeaking or
creaking noise may be heard from the front suspension during driving.
CORRECTION
Change the Spring Seat Isolator (Improved part – Part no 52057793) and BUMPER, FRT
S/ABS UPR (LOWER) (Improved part – Part no 92272819) and other damaged part as
necessary.
VEHICLES INVOLVED
All involved vehicles are identified by Vehicle Identification Number on the Investigate Vehicle
History screen in GM Global Warranty Management system. Dealership service personnel
should always check this site to confirm vehicle involvement prior to beginning any required
inspections and/or repairs. It is important to routinely use this tool to verify eligibility because
not all similar vehicles may be involved regardless of description or option content.
For dealers with involved vehicles, a listing with involved vehicles containing the complete
vehicle identification number, customer name, and address information has been prepared and
will be provided to dealers through the GM GlobalConnect Recall Reports, or sent directly to
export dealers. Dealers will not have a report available if they have no involved vehicles
currently assigned.
The listing may contain customer names and addresses obtained from Motor Vehicle
Registration Records. The use of such motor vehicle registration data for any purpose other
than follow-up necessary to complete this program is a violation of law in several
states/provinces/countries. Accordingly, you are urged to limit the use of this report to the
follow-up necessary to complete this program.
PART INFORMATION
Parts required to complete this program are to be obtained from General Motors Customer Care
and Aftersales (GMCC&A). Please refer to your “involved vehicles listing” before ordering
parts. Normal orders should be placed on a DRO = Daily Replenishment Order. In an
emergency situation, parts should be ordered on a CSO = Customer Special Order.
Copyright 2014 General Motors. All Rights Reserved.

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May 2014

Bulletin No.: 14040

Improved part – Change all of the affected VINs
Item

Part No

Quantity

Spring Seat Isolator (Improved part)

52057793

2

BUMPER, FRT S/ABS UPR ( (LOWER)
(Improved part)

92272819

2

Part No

Quantity

MOUNT, FRT S/ABS UPR
(W/O INSULATOR, FRT SPR UPR 92272820)

52066552

2

NUT, FRT S/ABS

94708486

2

BUMPER, FRT S/ABS UPR ( (UPPER)

94708484

2

SHER, FRT S/ABS

94708483

2

WASHER, FRT S/ABS (UPR)

94708482

2

ABSORBER, FRT SHK

Based on
vehicle options

2

WASHER, FRT S/ABS UPR BRKT

94708481

2

Part information – Change as necessary
Item

Remark
Replace all VINs
Replace all VINs

Remark
Replace if
damaged
Replace if
damaged
Replace if
damaged
Replace if worn
more than 1mm
Replace if worn
more than 1mm
Replace if worn
more than 1mm
Replace if
damaged

Remark:
P/N 94708478: Top mount bracket with Spring Seat Isolator - Old part number
P/N 52066552: Top Mount Bracket without Spring Seat Isolator – New Part number

May 2014

Not required for this field action

Bulletin No.: 14040

Not required for this field
action

Page 3

SERVICE PROCEDURE
1. Check the Customer VIN with the affected VIN list in order to replace parts based on the
recommended instruction.
2. Identify and/or confirm that the complaint noise is a squeaking noise from the front
suspension while driving.
3. Remove both front struts (even if there is only a noise from one side).

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May 2014

Bulletin No.: 14040

4. Before removing the top mount bracket (refer figure 1, item 4), place alignment marks on the
top mount bracket and spring using the outboard mounting bolt on the strut top bracket as a
reference. Mark the bottom of the spring to shock absorber as well. These marks should all be
aligned as shown in figure 2 and 3.
Warning: Follow ALL procedures for Removal found in SI. Spring is under tension and could cause injury if not
Removed in accordance with all instructions.

5. Remove the top mount plate. Ensure SI procedures are followed as the spring is under
tension and injury could occur if incorrectly disassembled.

6. Refer to figure 1 - the lower bush (9) will be replaced as well as the spring seat insulator (not
shown in figure 1). In addition, inspect the top mount bracket (4), cup washer (7), upper bush
(8), and shocker absorber rod (1) for damage. Follow these guidelines to determine if these
parts should be replaced:
- Place a straight edge along the shocker absorber rod as shown in figure 4.
- Measure the depth of wear on the shaft. If the wear is greater than 1mm, replace the shock
absorber.

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May 2014

Bulletin No.: 14040

- Inspect the steel washer (silver) that is pressed into the centre of the top mount bracket. If the
washer has worn through to the black steel mount bracket, then replace the top mount bracket,
refer figure 5.
- Inspect the upper bush (8), if the bush is out of shape or is damaged, replace the bush. In
most cases it is expected that the upper bush can be reused. Do not replace it unless
necessary.
- Inspect the cup washer (7) for distortion or other damage. Replace only if required.
Figure 4 — Measure Gap between Straight Edge and Shock Rod

Figure 5 — Check if Silver Washer Has Worn Through
7. Install the revised spring seat insulator (52057793) to the top of the spring. The revised
insulator has a step or recess in it for the end spring coil to sit in. Ensure the spring sits fully
into the step/recess, refer figure 6 & 7.
Phase II :

8. Install the revised top mount lower bush part number 92272819 to the strut top bracket.
Ensure the inner lip of the bush is not pinched or folded when installing. Refer figure 8.

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Bulletin No.: 14040

Figure 8
9.In case of Trailblazer front spring doesn’t have yellow dot mark must be change spring
improvement ( with yellow ).Install the top mount assembly into the rubber insulator taking care
to align the paint marks, refer figure 9 & 10.
Phase II: Please refer to the affected VIN list (Trailblazer Build range: SORP – 25 Apr 2013 /
8,475 Units)

Phase II:

Figure 9

Figure 10

10. Reassemble the strut assemblies following SI procedures. Ensure the spring is aligned and
fully seat at the bottom.
11. Test and confirm the noise is eliminated.

WARRANTY INFORMATION

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May 2014

Bulletin No.: 14040

Submit a transaction using the table below
Labour
code
9100379
9100378

Description
A140040 GMI700&31UX C Front Strut Noise MY1213_Inspection
A140040 GMI700&31UX C Front Strut Noise MY12-13
Replace Insulator (White Color), Lower Bushing and
others (If damaged)

Labour
Time
0.1
1.6

*In case of customer did the modification on a shock absorber or replace a new shock absorber,
Labour operation code 9100379 will be applied for this case to close a job card.
DEALER PROGRAM RESPONSIBILITY
All unsold new vehicles in dealers possession and subject to this program must be held and
inspected/repaired per the service procedure of this program bulletin before customers take
possession of these vehicles.
Dealers are to contact affected vehicle owners for them to bring their vehicles into service
centers to have this issue corrected at no charge to customers, regardless of mileage, age of
vehicle, or ownership.
Customers who have recently purchased vehicles sold from your vehicle inventory, and for
which there is no customer information indicated on the involved vehicle listing, are to be
contacted by the dealer. Arrangements are to be made to make the required correction
according to the instructions contained in this bulletin.
In summary, whenever a vehicle subject to this program enters your vehicle inventory, or is in
your facility for service, you must take the steps necessary to be sure the program correction
has been made before selling or releasing the vehicle.

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May 2014

Bulletin No.: 14040

DD MM 2014

Dear Chevrolet Customer,
This notice is sent to inform you that Chevrolet is conducting a customer satisfaction program
on certain MY 2012/2013 Chevrolet Colorado and Trailblazer vehicles.
We have learned that on some involved vehicles, a squeaking or creaking noise may be heard
from the front suspension during driving.
Your satisfaction is very important to us. We therefore, would like to announce this program to
prevent this condition or, if it has occurred, to fix it.
According to our records, you own a vehicle which is subjected to this customer satisfaction
program. We hereby request you to visit your nearby authorized dealer and/or service center to
have your vehicle immediately inspected for the Front shock absorber condition and correction.
Please contact your authorized dealer and/or service center to schedule an appointment for this
program. Service instructions have already been sent to your authorized dealer and/or service
center and this service can be completed in 2 hours under service appointment.
If you have any questions or concerns, please feel free to contact your Chevrolet Customer
Relations Department at ------------------------------------------.

We apologize for inconvenience.

Sincerely,
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 tools,
equipment, 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 dealer for information on whether your vehicle may benefit from the information.