Engine Cranks Slowly

WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.

Inspect the following items:

Battery - Perform the Battery Inspection/Test. See BATTERY TESTING & INSPECTION under ON-VEHICLE TESTING in GENERATORS & REGULATORS in CHARGING SYSTEM in ELECTRICAL.
Wiring - Inspect the wiring for damage. Inspect all connections to the starter motor, the solenoid, the battery, and all ground connections. See TESTING FOR INTERMITTENT AND POOR CONNECTIONS . See WIRING DIAGRAMS .
Engine - Verify that the engine is not seized.

If the battery, the wiring, and the engine are functioning properly, and the engine continues to crank slowly, replace the starter motor. See STARTER under REMOVAL & INSTALLATION.