Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G3500, VAN PASSENGER EXTENDED, 6.5 FREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 203 (CRUISE CONTROL SYSTEM)SELF-DIAGNOSTIC SYSTEMDIAGNOSTIC TROUBLE CODE DEFINITIONS
2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 F
Diagnostic Trouble Code Definitions
2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 FSECTION Diagnostic Trouble Code Definitions
WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC TROUBLE CODE DEFINITIONS
| DTC (1) | Description | Perform Test | ||
|---|---|---|---|---|
| P0574 | Powertrain Control Module Detects High Vehicle Speed | P0574 | ||
| P1554 | Powertrain Control Module Detects Cruise Engaged Signal | P1554 | ||
| P1560 | Cruise Control Engaged With Vehicle In Neutral Or Park | P1560 | ||
| P1564 | Powertrain Control Module Detects Rapid Acceleration | P1564 | ||
| P1566 | Powertrain Control Module Detects High Engine Speed | P1566 | ||
| P1567 | Traction Control System Applied Brakes | P1567 | ||
| P1570 | Traction Control Active Cruise Disabled | P1570 | ||
| P1574 | Brakelight Switch Circuit | P1574 | ||
| P1585 | Cruise Control Inhibit Output Circuit | P1585 | ||
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.