new alternator and not charging. what could be the problem

Asked by Orion Sep 19, 2016 at 03:36 PM about the 1996 GMC Sonoma 2 Dr SL Standard Cab SB

Question type: Maintenance & Repair

new alternator and not charging. what could be the problem

3 Answers

25,805

Could be the battery, corroded, or loose battery cables, or bad voltage regulator. Take the truck to your local auto parts and they can check it free of charge

1 people found this helpful.
58,315

all above are correct...diode...who and when was the alt replaced?? as ts said some time ago >It looks like your trucks charging system is computer controlled, have the engine control system checked, the fault might be in the ECM. its called a VAT TEST

2 people found this helpful.
58,315

http://www.automotiveforums.com/t952318- alternator_charging_problem_1998_gmc_jimmy_4_3.html

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