Stator Test

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.

Using an ohmmeter, measure resistance between stator leads. Perform STEP 1 in figure. See Fig 1 . If resistance is more than 5 ohms for any measurement, replace stator.
Using an ohmmeter, measure resistance between each stator lead and stator core. Perform STEP 2 in figure. See Fig 1 . If resistance is less than 5 ohms, replace stator.

Fig 1: Testing Generator Stator

Courtesy of GENERAL MOTORS CORP.