| Subject: | Diagnostic Informaion for Replacement Remote Keyless Entry (RKE)
Transmitter Inoperative -- Unable to Synchronize |
| Models: | 2003-2004 Cadillac Escalade, Escalade ESV, Escalade EXT |
| 2003-2004 Chevrolet Avalanche, Silverado, Suburban, Tahoe |
| 2003-2004 GMC Sierra, Yukon, Yukon XL |
This bulletin is being issued to inform dealers that some of the replacement
remote keyless entry (RKE) key fobs under P/N 15186203 may not synchronize with the
vehicle after following the procedure highlighted in the SI Document ID #660745. It
has been found that the key fob software may be set in a new mode, which can cause
a lack of synchronization. To exit the new mode, hold the unlock and panic alarm buttons
simultaneously for ten seconds. This will place the key fob software in a learnable
mode for individual truck synchronization. Next, complete the synchronization process
as per the SI document. DO NOT dispose or return the inoperative key fobs until this
procedure has been first attempted.
