What is your question?
My speedometer is going 2 times faster than normal, my ac/heater temp. is also off.my thermostat was replaced but has not registered in the middle goes way off the gauge .what is the issues & the cost?The speedodometer ,& ac/heater gauges started not working correct forabout 2 weeks.The fan has gotten very loud.(inside)ac& heater.
What makes this problem better or worse?
Turn auto off.
How long has your 2005 Pontiac Bonneville had this problem?
Over a year . And newer issues recently past week
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