Electric Machine Cleaning and Inspection

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Refer to Safety Glasses Caution in Cautions and Notices.

Clean the flexplate, stator and rotor with compressed air.
Inspect the flexplate (1) for stress cracks around the flexplate-to-rotor bolt hole locations.
Inspect the stator for the following conditions:
- Rust or corrosion at the electrical terminal connection or the electrical windings (2 and 3)
- Scoring or gouging in the electrical winding surfaces (3)
- Bent or damaged stator
- Damage to the exterior of the housing and/or coolant jacket
Inspect the rotor for the following conditions:
- Rust or corrosion of the electrical windings (4)
- Scoring or gouging in the electrical winding surfaces
- Bent or damaged rotor
- Stress cracks around the rotor-to-crankshaft bolt hole locations (5)

Fig 1: View Of Flexplate, Stator & Rotor Damaged Areas

Courtesy of GENERAL MOTORS CORP.

Inspect the electrical terminal studs and the electrical connection for corrosion.