Diagnostic Trouble Code Definitions
WARNING: This page is about a different car, the 2001 GMC Safari and 2001 Chevrolet Astro. 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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