SB-10057971-8608
GM Bulletin No.: 14770
Date: March 2015

Service Bulletin
SERVICE UPDATE
SUBJECT:

Service Update for Inventory and Customer Vehicles
Seat Wire Harness
Expires with Base Warranty

MODELS:

2014-2015 Chevrolet Impala

This service update includes vehicles in dealer inventory and customer vehicles that return to the
dealership for any reason. This bulletin will expire at the end of the involved vehicle's New Vehicle
Limited Warranty period.
PURPOSE
This bulletin provides a service procedure to inspect and, if necessary, reroute the seat wire
harness away from a seat back suspension spring on certain 2014-2015 Chevrolet Impala
vehicles. On some of these vehicles, the cut end of the left or right front seat back suspension
spring may contact the seat wire harness near the recliner motor. Movement of the suspension
spring can cause damage to seat wire harness protective sleeve and wire insulation, which can
lead to a short circuit in the seat wire harness.
This service procedure should be completed as soon as possible on involved vehicles
currently in dealer inventory and customer vehicles that return to the dealer for any type
of service during the New Vehicle Limited Warranty coverage period.
VEHICLES INVOLVED
All involved vehicles are identified by VIN in the Global Warranty Management System –
Investigate Vehicle History Application. Dealership technicians 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.
Additionally, a list of involved vehicles currently in dealer inventory is available on the “Service
Update Bulletin Information” link under the “Service” tab in GM GlobalConnect (U.S.) or attached
to the GlobalConnect message (Canada) used to release this bulletin. Customer vehicles that
return for service, for any reason, and are still covered under the vehicle's base warranty should
also be checked for vehicle eligibility.

Copyright 2015 General Motors. All Rights Reserved.

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March 2015

Bulletin No.: 14770

PART INFORMATION
Note: Use a general purpose tie strap to complete the repair in this bulletin. General purpose tie
straps are considered shop material. If a specific performance rated tie strap is required to
complete a repair, the tie strap will be listed in the parts section of the bulletin with a GM part
number.
SERVICE PROCEDURE
Use the following steps to inspect, and if necessary repair, the left and right front seat SIR wiring
harness routing.
1.

Note the position of the front seats. Move both front seats to the full forward/full upright
position.

2.

Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and
Connection in SI.

4001527

3.

Disengage the left seat back cover lower center and inboard J channel from the seat back
frame.

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March 2015

Bulletin No.: 14770

4001528

4.

Disconnect the center section of the rear seat cover from the inboard and outboard cover.
Raise the center section of the seat cover for inspection.

5.

Inspect the wiring harness to seat back cushion pad wire clearance as shown.

4001529

 If the harness is not contacting the cushion pad wire and there is a minimum of 10 mm
clearance, proceed to the next step.

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March 2015

Bulletin No.: 14770

4001531

 If the harness is contacting the cushion pad wire or shows evidence of contact, proceed
to the Repositioning and Securing Seat Wiring Harness section below.
6. Reconnect the center seat cover to side seat cover J-channels. Reconnect the lower seat
cover to seat frame J-channels.
7.

Repeat steps 3-6 on the right front seat.

8.

Reconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and
Connection in SI.

9.

Reposition the seats into their original location.

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March 2015

Bulletin No.: 14770

Repositioning and Securing Seat Wiring Harness.

4001651

1.

Disengage the 3 biter clips from the seat frame. Cut off the biter clip tie straps.

4001532

2.

Pull the harness away from the seat back cushion pad wire.

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March 2015

Bulletin No.: 14770

4001534

3.

Using the holes in the seat back frame, attach 3 tie straps and secure the harness away
from the seat back cushion pad wire as shown.

4001535

CAUTION: Ensure the square end of the tie straps are facing the seat back cushion so it does
not damage the seat cover.
4.

Proceed to step # 6 above for seat reassembly.

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March 2015

Bulletin No.: 14770

WARRANTY TRANSACTION INFORMATION
Submit a transaction using the table below. All transactions should be submitted as a ZFAT
transaction type, unless noted otherwise.
Labor
Code
9101407
9101408

Description
Inspect Seat Wire Harness Only – No Further Action Required
Inspect and Reroute One Seat Wire Harness
Add: Reroute Second Seat Wire Harness

Labor
Time
0.4
0.5
0.1

DEALER PROGRAM RESPONSIBILITY
Whenever a vehicle subject to this service update enters your vehicle inventory, or is in your facility
for service in the future, and the vehicle is still covered under the New Vehicle Limited Warranty,
you must take the steps necessary to be sure the service update correction has been made before
selling or releasing the vehicle.

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 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.

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