Sierra 3500 4WD V8-8.1L VIN G (2006)
Control Module: Technical Service Bulletins
A/T Controls - SPS Error Mssg. When Programming Modules
Bulletin No.: 07-07-30-009
Date: May 02, 2007
INFORMATION
Subject:
Unable to Complete Programming of Any Module Due to SPS Error Message
Models:
2006 Chevrolet Silverado
2006 GMC Sierra
with Allison LCT Transmission (RPO MW7)
When programming any module on a truck equipped with a 6-speed Allison transmission, you may encounter SPS error messages and be unable to
complete programming. This may be caused by the Transmission Control Module (TCM) for the Allison transmission waking up during programming
and interrupting the procedure.
For 2006 models only, remove the 10 amp TCM fuse in the UBEC, continue with the programming process and when completed, reinstall the fuse.
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