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New battery and new alternator voltage?

Tiny
UPJAKE
  • MEMBER
  • 2014 CHEVROLET SILVERADO
  • 6 CYL
  • 4WD
  • 220,367 MILES
Installed both new. When I crank up my truck the gage reads 14 then after a few minutes it drops down a little. I tested the voltage when it was at 14 and the tester showed 14 but after it dropped, I tested it and it red 12.5. Then I turned on the headlights and the heater and fan wide open and then tested it and it read like 13.6.
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Sunday, July 30th, 2023 AT 2:35 PM

2 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
Yep, this is normal, this truck has an adaptive charging system which only charges the battery until it is full and then it throttles back the field to help save fuel. If there are no warning lights on you are okay. Use 2CarPros anytime, we are here to help. Please tell a friend.
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Monday, July 31st, 2023 AT 12:35 PM
Tiny
UPJAKE
  • MEMBER
  • 2 POSTS
Okay, thanks for your reply.
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Monday, July 31st, 2023 AT 12:37 PM

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