Truck battery goes 9 to 14 and back and forth

Asked by Tyler Mar 25, 2018 at 01:35 AM about the 1997 GMC Sierra 1500 K1500 SLE 4WD Extended Cab SB

Question type: Maintenance & Repair

I gotta 97 gmc 4x4 6.5L TDD and battery tells me 9 to 14
back and forth. When i brake my lights dim when i gas they
dim and my high beams kick off sometimes and turn back
on here and there. But i need help on the fluxuation of my
batt lvls

1 Answer
135

midnight32 answered 6 years ago

your alternator is probably going out but if it happens to be your battery diehard batteries last a good while i had one for 12 years and it still works

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