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06 Electrical problem

  1. Shajay
    I'm a new Trailblazer owner and was just wondering if it was normal for lights to dim as the truck is in park and volt meter drops? Or is it a alternator problem? Thanks.
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  2. Mr. B
    Mr. B
    My '06 Trailblazer does the same thing, but when lights, heater fan running and big load on the alternator other wise no problem. Just replaced both front wheel hubs though after 78,000 miles to the tune of $1300, good thing I had the extended warranty. Started to vibrate at about 45 MPH and could hear a hum with window down, and took it in to dealer, all good now.
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