Engine Cranks Slowly

WARNING: This page is about a different car, the 2007 Hummer H2. 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 Conditions 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 .