There have been 2 technical service bulletins issued for the 1999 GMC C6 Medium Duty.
| Bulletin Date: | Feb. 1, 2001 |
| Component: | Defroster/defogger system windshield heater core. |
| Bulletin Summary: | Some drives may comment that the heater outlet hose is routed too close to the generator or that the hose contacts and rubs on the generator. |
| Vehicles covered in this TSB: |
1999 Chevrolet C6 Medium Duty,
2000 Chevrolet C6 Medium Duty,
1999 Chevrolet C7 Medium Duty,
2000 Chevrolet C7 Medium Duty,
1999 GMC C6 Medium Duty,
2000 GMC C6 Medium Duty,
1999 GMC C7 Medium Duty,
2000 GMC C7 Medium Duty.
|
| Bulletin Date: | Apr. 1, 2000 |
| Component: | Gasoline engine. |
| Bulletin Summary: | Some customers may comment on an intermittent hard start or no start, and / or possible malfunction indicator light with a diagnostic trouble code p1345. |
| Vehicles covered in this TSB: |
1999 Chevrolet B7,
2000 Chevrolet B7,
1999 Chevrolet C6 Medium Duty,
2000 Chevrolet C6 Medium Duty,
1999 Chevrolet C7 Medium Duty,
2000 Chevrolet C7 Medium Duty,
1999 GMC B7 Medium Duty,
2000 GMC B7 Medium Duty,
1999 GMC C6 Medium Duty,
2000 GMC C6 Medium Duty,
1999 GMC C7 Medium Duty,
2000 GMC C7 Medium Duty.
|
Also see
GMC vehicle common problems.