Diagnostic Trouble Code Definitions
WARNING: This page is about a different car, the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC TROUBLE CODE DEFINITIONS
| DTC (1) | Description | ||
|---|---|---|---|
| P0562 | Low System Voltage | ||
| P0563 | High System Voltage | ||
| P1637 | Generator Turn On Signal Circuit Voltage Out Of Range | ||
| P1638 | Pulse Width Modulated Signal Out Of Range | ||
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