Battery light on dashbord is staying on
- Thread starter HotCarl
- Start date
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retorq
Full Access Member
Get a multimeter, start the truck, red to positive, black to negative and read the DC voltage. Should be 14ish. If it's 12ish your alt is bad or weak. You can check the alternator similarly and determine if it's a wiring issue or really the alt.
retorq
Full Access Member
The ones here do yes. 
99Yukon_Z71
Crazy Puerto Rican
99.9% chance your alternator is NOT charging. While you are at it, you should get the optional HD 140 Amp alternator! Goodluck
OK, so i drove it to class today. When I first started it up the battery light stayed on, and the dash gauge went up above 14 volts then stayed steady at 12... battery light then went off for the entire drive to campus which is about 8 minutes.
After class I'm taking it to Shuck's to get it tested and replace it if its bad. What is the advantage of the heavy duty Alt??
After class I'm taking it to Shuck's to get it tested and replace it if its bad. What is the advantage of the heavy duty Alt??
AtomicHoe094
Atomichoe094
well glad to hear it all worked out for ya, a ** alternator would of been wise if you would of had some electrical accessories like elec fans, more lights, subs and crap like that, no need to worry with the stock 105amp for you
retorq
Full Access Member
I love when this kinda stuff happens.
ravingmadman
Chief Knuckle Buster
You got lucky. My experience has been that when that light comes on, you've only got a matter of a day or two to get your alternator unbuggered/replaced before you're dead in the water. Good job going to the parts house for a scan.
Yeah the local Shuck's/O'Reilly guys were pretty helpful. Gave me a quick walk-through on the removal of the alt and belt. I had never done it before and it took about 45 minutes. Longest part was aligning the new alt absolutely perfectly so the bolts would slide all the way in.
