New battery and new alternator voltage?

2014 CHEVROLET SILVERADO
220,367 MILES • 6 CYL • 4WD
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UPJAKE
  • MEMBER
  • 2 POSTS
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.
Jul 30, 2023 at 7:35 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,549 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.
Jul 31, 2023 at 5:35 AM
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UPJAKE
  • MEMBER
  • 2 POSTS
Okay, thanks for your reply.
Jul 31, 2023 at 5:37 AM
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