Car runs fine alt. is good battery is good after making sure nothing is left on,car sits overnight and won't start the next morning.also when I'm going down the road sometimes every light on the dash comes on everything flickers notice temp. gauge is not showing anything and A/C stops blowing cold air.I stop disconnect the battery for a couple minutes reconnect and everything is fine. have had this problem now for 3-4 years
Check for loose / dirty ground wires and points
indicates a voltage circuit being broken and the ECM is loosing voltage to work
SOURCE: have to unhook battery for 2002 monte carlo to start
sounds like you have a bad ground. There should be a motor ground on the back of the motor anas well as the battery ground. The battery going dead could be caused by this or a bad regulator in the altenator unplug the altenator to check this for the starting problem
SOURCE: 2001 chevy s-10. All the gauges stop working and
may hav a instrument cluster failure-and a related module-there r techs who specialize in that repair-go to advance n get a scan n askum
SOURCE: 2001 Monte Carlo battery goes dead over night
9 times out of 10 it is the factory amplifier. I had this same problem and it was the amplifier. Disconnect the amp located in the trunk by the speakers and see if the drain continues. You will not have music, but having the amp replaced with an aftermarket one will solve this problem,
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Hi Don Everson, I want to help you with your question, but I need more information from you. Can you please add details in the comment box? You might want to see if you can get a used BCM at the salvage yard. If you want to troubleshoot the draw, try pulling fuses with the key off and then using a test light across the fuse socket terminals. Any fuse socket that lights the test light brightly is using too much power. Once you find the circuit with the draw, you will have to trace the circuit to each component being fed and test those components. When the dash goes crazy, it's usually because the battery voltage is very low or the bcm is acting up. Also good to make sure the bcm isn't getting wet in any way.
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