Beginning with the 2007 model year, GM has changed suppliers for the Universal Home Remote (UHR) option UG1 for numerous GM vehicle platforms. The product trade name for the new system is Car2Uâ„¢ Home Automation System from Lear.
TIP: The new Lear system can be identified visually by the three round LEDs above the buttons. The earlier JCI system had a single triangular LED.
TIP: See the March 2007 issue of TechLink for details.
Here are some helpful tips to use when there are programming issues with the Car2U system. It is important to use all of the resources available to resolve the programming issue before replacing the UHR unit in the vehicle.
TIP: The Lear UHR installed in early production vehicles cannot communicate with the
J-41540 tester (* see table below for date). If you encounter one of these vehicles, testing
is not possible. A later model UHR must be installed.
Issue | Do This | Don't Do This |
UHR will not program to vehicle owner's opener | Verify which UHR is installed in the vehicle: | Don't replace UHR until you verify that correct programming instructions were tried by vehicle owner |
Verify that vehicle owner is using correct programming procedure. | ||
Instruct vehicle owner to contact Lear Hot Line at 866.572.2728 for assistance. | ||
Review correct programming instructions with vehicle owner | ||
Vehicle owner cannot get Lear UHR to work with a community gate. | Lear will assist in getting gate to work. Instruct vehicle owner to contact Lear Hot Line at 866.572.2728. | Don't replace UHR |
Vehicle owner programmed the Lear UHR using the Lear instructions but the opener still does not work. | Instruct vehicle owner to contact Lear Hot Line at 866.572.2728 for assistance. | Don't replace UHR |
Service technician has tried to test Lear UHR with | Vehicle has early UHR -- contact Lear Hot Line at 866.572.2728 for assistance | Don't attempt to test early UHR |
Vehicle has later UHR -- contact Lear Hot Line at 866.572.2728 for assistance | Don't replace UHR |
- Thanks to Doug Daugherty
* Timing of UHR Diagnostic Software Update
Vehicle | Later UHR Installed |
Corvette, XLR, SRX, and MY2007 CTS | Vehicles built after November 2006 |
Tahoe, Yukon/XL/Denali/XLDenali, Escalade/EXT/ESV, 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 MY 08 |
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