9.0

really awful
Typical Repair Cost:
$250
Average Mileage:
78,500 miles
Total Complaints:
2 complaints

Most common solutions:

  1. not sure (1 reports)
  2. replace entire alternator (1 reports)
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problem #2

Jan 032011

(reported on)

Bonneville 3.8L V8

  • Automatic transmission
  • 110,000 miles

The amp gauge fluctuates from 9 amps to 14 amps and continues to go up and down without any regularity to it. Sometimes it happens constantly, and other times it's hours apart. I have replaced the alternator and battery both with brand new ones and it still made no difference. Two mechanics could not figure it out. What is the likely problem? Could it be bad batter connections or corrosion? Could it be a bad control module? It's getting very annoying, please help.

- Rick T., Portland, OR, US

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problem #1

Jul 262001

(reported on)

Bonneville

  • 47,000 miles

you would think that Pontiac would know how to design an alternator by now. Also, only one service manager of four I checked with even acknowledged that there was a problem. Required two so far - I got a lifetime warranty with the first replacement from my GM dealer so the second one was free.

- Steve S., Mantua, UT, US

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