There have been 3 technical service bulletins issued for the 1997 GMC C7H.
| Bulletin Date: | Nov. 1, 1997 |
| Component: | Engine. |
| Bulletin Summary: | Exhibiting a condition in which loose spark plug wires may cause premature piston failures due to pre-ignition spark plug firing. |
| Vehicles covered in this TSB: |
1997 GMC C6H,
1997 GMC C7H.
|
| Bulletin Date: | Nov. 1, 1997 |
| Component: | Engine. |
| Bulletin Summary: | Subject on premature piston failure. |
| Vehicles covered in this TSB: |
1997 GMC C6H,
1997 GMC C7H,
1997 GMC GMC.
|
| Bulletin Date: | Sep. 1, 1997 |
| Component: | Engine. |
| Bulletin Summary: | Condition in which loose spark plug wires may cause premature piston failures due to pre-ignition spark plug firing. |
| Vehicles covered in this TSB: |
1997 Chevrolet Chevrolet,
1997 GMC C6H,
1997 GMC C7H.
|
Also see
GMC vehicle common problems.