Diagnostic Information When Servicing Liftgate Module
| Subject: | Diagnostic Information When Servicing Liftgate Module |
| Models: | 2006 Buick Rainier |
| 2006 Chevrolet TrailBlazer |
| 2006 GMC Envoy |
Technicians should be aware that 2004 liftgate modules (LGM) may be found in some 2006 model year vehicles. The supplier modified the software to work on the 2006 model year vehicles with the 2004 model year hardware.
This bulletin is to instruct Technicians of the recommended actions to take to diagnose this part in service. If a vehicle comes in for service, the Technician may replace the component with the appropriate current service part number.
Liftgate Module P/N (MY 2004 hardware w/ Special Software) | Liftgate Module P/N (MY 2006 Service P/N) |
|---|---|
15879369 | 15869971 (or newer) |
The Tech 2® will be able to read the base part number when an LGM needs programming and will be able to determine the part installed.
Do not attempt to reprogram a 2004 MY LGM with a 2006 MY calibration. Doing so may cause the following conditions:
| • | Improper communication |
| • | Rear Wiper Delay 1 Delay 2 will not work properly |
