I got a new battery and checked alternator
Chevrolet Q&AAsk Your Question
2004 Chevrolet Trailblazer Question: What is the problem when gauges are erratic up and down?
Answer #1Tomiko January 19, 2013, 19:27Journeyman
maybe there is an electrical issue
Answer #2raymond1 January 21, 2013, 11:07Rookie
Ihad an alternator installed but now the check gauge come on and and the battery gauges drop all the way down whwat you yhink the problem is?my truck is a 2002 dodge dakota 3.9 engine