| Subject: | Diagnostic Information For a Universal Home Remote (UHR) System That Is Not Operating and J 41450 HomeLink Tester Is Not Communicating With UHR Module |
| Models: | 2008 Buick Lucerne |
| 2007-2008 Cadillac CTS, Escalade Models, SRX, STS, XLR |
| 2007-2008 Chevrolet Avalanche, Corvette, Impala, Malibu, Silverado, Suburban, Tahoe |
| 2007-2008 GMC Sierra, Yukon Models |
| with Universal Home Remote System (RPO UG1) |
The purpose of this bulletin is to provide dealership personnel with diagnostic information and procedures for the new Universal Home Remote (UHR) system that is now available on certain 2007 and all 2008 model year vehicles listed above. When diagnosing
a UHR system that is not operating, technicians may also find that the J 41540 HomeLink Tester is not communicating with the UHR module. The new UHR module does not have the software capability to communicate with the J 41540 HomeLink Tester.
Do This
| Don't Do This
|
Contact the Lear Car2U Hot Line at (866) 572-2728 with customer comments prior to any repair.
| Do not replace the UHR module unless it has been properly diagnosed as a failed part.
|
Technicians should first refer to PIT4073A for overall programming information. Next, contact Lear Car2U Hot Line at (866) 572-2728 for assistance prior to any repair. Please have the customer's original comments and your preliminary findings before
making the call.
Production Dates For Vehicles With Updated UHR Diagnostic Software
| • | Corvette, XLR, SRX and Model Year 2007 CTS Vehicles built after November 2006 |
| • | Tahoe, Yukon/XL/Denali/XLDenali, Escalade/EXT/ESC, Avalanche, Suburban Vehicles built after March 2007 |
| • | Sierra, Silverado Vehicles built after March 2007 |
| • | Malibu, AURA, Impala, STS Vehicles built after April 2007 |
| • | Lucerne, DTS, H2 software change incorporated for Model Year 2008 |
