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ALT charging 14.9 volts never goes down

Tiny
DBOSS
  • MEMBER
  • 2014 CHEVROLET TRUCK
  • 6.6L
  • V8
  • TURBO
  • 4WD
  • AUTOMATIC
  • 87,000 MILES
Have 3 trucks same years all diesel they keep blown the 175 am fuse the alt is charging 14.89 volts never comes down
Friday, December 4th, 2015 AT 3:21 PM

2 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
If you disconnect the alternator hot wire on the back, does the fuse still blow?

Roy
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Sunday, December 6th, 2015 AT 8:27 AM
Tiny
DBOSS
  • MEMBER
  • 2 POSTS
Nope, it blows it after drivin it for and hour, they all stay on 15 volts they are all 2014 chevy trucks with a 6.6 diesel
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Monday, December 7th, 2015 AT 8:52 AM

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