alt charging 14.9 volts never goes down

2014 CHEVROLET TRUCK
87,000 MILES • 6.6L • V8 • TURBO • 4WD • AUTOMATIC
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DBOSS
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Have 3 trucks same years all diesel they keep blown the 175 am fuse the alt is charging 14.89 volts never comes down
Dec 4, 2015 at 3:21 PM
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ASEMASTER6371
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if you disconnect the alternator hot wire on the back, does the fuse still blow???

Roy
Dec 6, 2015 at 8:27 AM
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DBOSS
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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
Dec 7, 2015 at 8:52 AM
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