Disclaimer2010 Cadillac CTS Sedan AWD V6-3.0L Technical Service Bulletin # 09-08-66-010B Date: 100325

Disclaimer2010 Cadillac CTS Sedan AWD V6-3.0L Technical Service Bulletin # 09-08-66-010B Date: 100325

Body - Power Liftgate Inoperative from Key FOB

TECHNICAL

Bulletin No.: 09-08-66-010B

Date: March 25, 2010

Subject: Power Liftgate Inoperative from Key FOB, Interior Mounted Open/Close Switch, Gate Mounted Open/Close Switch and Gate Mounted

Touch Pad (Reprogram Liftgate Control Module)

Models:

2010 Cadillac CTS Sport Wagon, SRX

2010 Chevrolet Equinox

2010 GMC Terrain

Built Prior to the Following VIN Breakpoints:

Supercede:

This bulletin is being revised to add VIN breakpoint information. Please discard Corporate Bulletin Number 09-08-66-010A (Section 08 - Body

and Accessories).

Condition

- Some customers may comment that the power liftgate is inoperative from the key FOB, the interior mounted open/close switch, the liftgate

mounted open/close switch and the liftgate mounted touch pad.

- 2010 Cadillac CTS Sport Wagon ONLY - Some customers may comment that the power liftgate does not open on first attempt, but will open

on subsequent consecutive attempts.

Cause

2010 Cadillac CTS Sedan AWD V6-3.0L Page 231

This condition may be caused by a power liftgate microprocessor issue that could cause the power liftgate module to stop communicating on the

GMLAN Serial Data Bus.

Correction

Note

If the power liftgate module is not communicating, remove the two power liftgate module fuses, wait a minimum of 1 minute , and reinstall the

two fuses; or disconnect the power liftgate module (disconnect all three connectors at the module), check and verify power and ground to the

module, and re-connect the power liftgate module. Verify communication. If communication is restored, then update the software in the power

liftgate module.

- A revised power liftgate module calibration has been released to address this condition. Reprogram the power liftgate module using the

Service Programming System (SPS) with the latest calibration available on TIS2WEB. Refer to the SPS procedures in SI.

- When using a multiple diagnostic interface (MDI) for reprogramming, ensure that it is updated with the latest software version.

- When using a Tech 2(R) for reprogramming, ensure that it is updated with the latest software version.

- During programming, the battery voltage must be maintained within the proper range of 12-16 volts. Only use the approved Midtronics(R)

PSC 550 Battery Maintainer (SPS Programming Support Tool EL-49642) or equivalent during programming.

Warranty Information

For vehicles repaired under warranty, use the table above.