ONSTAR Will Not Power Up (PIC5491K)
Publication date: 2017-12-18Reference number: PIC5491K
Supersedes refnos: PIC5491G, PIC5491H, PIC5491J
ONSTAR WILL NOT POWER UP
TECHNICAL SERVICE BULLETIN
| Affected Model(s): | 2006-2018 GM Passenger Cars and Trucks With OnStar (UE1) Gen7, Gen8, Gen9, FCP1, or Gen10 2000-2015 GM Passenger Cars and Trucks With Canada OnStar Upgrade (per latest version of bulletin 15-08-44-001) |
| Supercedes: | This PI was superseded to update Model Years. Please discard PIC5491J. |
CONDITION/CONCERN
A concern may be identified on a Gen7, Gen8, Gen9, FCP1, or Gen10 VCIM as OnStar system will not power up or no LED illuminated and no response from the OnStar button assembly.
Some technicians may also note that there is no communication with the scan tool during this concern.
RECOMMENDATION/INSTRUCTIONS
With the issue present, turn off the ignition, cancel RAP, and perform a 5 minute power cycle of the VCIM.
Then test OnStar key presses, LED status, and verify if the VCIM has communication with the scan tool.
If the system still will not power up, continue with normal diagnostics.
If the issue is eliminated, no further action is required.
If the "No Power" concern is eliminated by performing the procedure above and the "No Power" concern returns and a power cycle resolves the issue again, the VCIM will need to be replaced.
WARRANTY INFORMATION
| Labor Operation | Description | Labor Time |
| 3480678 | Perform OnStar Power Cycle | 0.5 |
| 3422790 | Communication Interface Module Replacement | Use Published Labor Time |
ADDITIONAL SI KEYWORDS:
U0198