1994 GMC 3500 alternator appears to not be charging battery light comes on while driving goes off when idling runs perfect when in park once I. Gear gauge goes down battery light comes on

Tracy Mole Crabbe Sr.

Asked by Aug 03, 2015 at 11:14 AM about the 1994 GMC Sierra C/K 3500

Question type: Maintenance & Repair

2 Answers


Bring the car into a auto parts store, most will test the battery and charging system for free.


Have charging system tested sounds like a bad alternator.

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