Engine Cranks Slowly
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Perform the following checks:
- Battery - Battery Inspection/Test. Refer to Battery Inspection/Test (Non-HP2) .
- Wiring - Inspect the wiring for damage. Inspect all connections to the starter motor, solenoid, battery, and all ground connections. Refer to CIRCUIT TESTING , WIRING REPAIRS , TESTING FOR INTERMITTENT AND POOR CONNECTIONS , and CONNECTOR REPAIRS .
- Engine - Make sure the engine is not seized. Refer to Symptoms - Engine Mechanical .
If the battery, the wiring and the engine are functioning properly and the engine continues to crank slowly, replace the starter motor. Refer to Starter Motor Replacement (4.8L, 5.3L, and 6.0L Engines) or Starter Motor Replacement (8.1L Engine) .