Diagnostic Trouble Code (DTC) List
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Diagnostic Trouble Code (DTC) List
| DTC | Diagnostic Procedure | Module(s) |
|---|---|---|
| B1327 | DTC B1327 | BCM |
| B1328 | DTC B1328 | BCM |
| P0562 | DTC P0562 | PCM |
| P0563 | DTC P0563 | PCM |
| P0615 | DTC P0615 | PCM |
| P0621 | DTC P0621 | PCM |
| P0622 | DTC P0622 (Gas Engine) or DTC P0622 (Diesel Engine) | PCM |
| P1637 | DTC P1637 | PCM |
| P1638 | DTC P1638 | PCM |