Bulletin No.: PI0945
Date: Apr-2013

Subject:

Hatchback Liftgate Will Not Open Using Remote Key Fob and Touchpad

Models:

2012-2013 Chevrolet Sonic
5 Door Hatchback Liftgate Vehicles Only

Condition/Concern
Some customers may comment that the hatchback liftgate will not open when they are using the remote key fob and the touchpad.
This condition may be caused by the following:

•

The customer does not press the key fob unlock button twice in order to enable the operation of the hatchback touchpad.
OR

•

A body control module (BCM) software anomaly.

Recommendation/Instructions
If the above Condition/Concern is encountered, DO NOT replace the BCM.
Notice: The key fob unlock button MUST be pressed TWICE in order to enable the operation of the hatchback touchpad.
1.

Verify that the Condition/Concern exists as described.

⇒
⇒

If the key fob unlock button is pressed twice and the hatchback touchpad does work, instruct the customer in the correct way to open the
hatchback using the key fob and touchpad.
If the key fob unlock button is pressed twice and the hatchback touchpad still does not work, an updated software calibration has been released to
address this Condition/Concern. Go to Step 2.

2.

Verify the battery voltage is more than 12 volts but less than 16 volts before proceeding with reprogramming the BCM.

3.

Verify that the devices being used for reprogramming are updated with the latest available software.

4.

Refer to Control Module References in SI for the appropriate Programming and Setup procedures.

5.

If a wireless connection will be used for reprogramming, a secure service department connection must be used. DO NOT use any public WiFi
connection from the customer lounge.

6.

Reprogram the BCM using the Service Programming System (SPS) with the latest calibrations available on TIS2WEB. Refer to the SPS procedures in
SI.

7.

Verify that all DTCs are cleared after performing the reprogramming event.

⇒

If further assistance is required call Techline at 1-800-828-6860 for English, or 1-800-503-3222 for French.

Warranty Information
For vehicles repaired under warranty, use:
Labor
Operation

Description

Labor Time

1

N4808

Body Control Module
Reprogramming with SPS

Use
Published
Labor
Operation
Time

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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