Why are my Gauges going crazy on 2005 Pontiac Sunfire

Every day all day

by in Potwin, KS on June 23, 2014
2 answers 4 comments
ANSWER by on June 23, 2014
Have the battery and alternator tested. When the alternator is starting to fail, the power level starts dropping and all components that draw on that power get 'starved' for electricity and act 'crazy'. Suspect alternator is the cause.
ANSWER by on June 24, 2014
Every night all night too? Needs a SCAN test of the instrument cluster to start with!... Code reader wont help!!
COMMENT by on June 24, 2014
Yes every night too I put a new Custer in it worked fine for one day then rpm hi gauge started going crazy took car to get the codes read after that all of them
COMMENT by on June 24, 2014
A SCANNER can actually test the gauges!!
COMMENT by on August 02, 2014
Do you have to go to Pontiac Dealership to have scan test done?
COMMENT by on August 02, 2014
No! Any independent shop 'should' be equipped to do this!