gages on dash wont move

Asked by Mar 02, 2014 at 03:54 PM about the 2005 Pontiac Montana

Question type: Maintenance & Repair

I own a 2005 Pontiac Montana minivan.  what would cause the speedometer needle and the temperature needles to not drop to zero when the motor is not running?  when the motor is running the needles will either stay in one position or be way above where they should be running normally.  Other than the needles not functioning properly there is no other issues with the vehicle.

2 Answers

41,185

Undo your negative terminal on your battery. Wait a couple of minutes and put it back on. See if it will reboot your system. If no dice there, you may have what they call a bad "stepper" motor in the gauge cluster. See link: http://www.faqs.org/car/pontiac-montana-2004/electrical-system/

8 of 8 people found this helpful.
4,765

Bad ground on the instrument cluster. Could be a loose harness connector also. Gauges operate on variable voltage and need a solid ground to register correctly, including dropping to 'zero'.

3 of 3 people found this helpful.

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