Check relays , if good then might be the contacts in the ignition switch, with gm recalling all switches maybe you can get assistance at the dealer for free
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won't crank just a click comes from the back ??? Click comes from the back where ? Battery an fuse / relay center under the back seat . Battery connection's ?
I will fill in the blanks....you must have a newer car with auto head lights....there is a setting on the headlight switch that lets you over ride the "automatic" headlight mode....maybe you or someone accidently turned it to the manual "on" position...if so turn it back to the "auto" setting......2nd....new cars do have a delay before the headlights go out after parking your car. And if you read your manual, you would see that the time they stay on after turning your ignition key off can be set to several different time settings, including to switch off as soon as you turn the key off.
But if you had accidently turned the light switch to the "on" setting.... fear not....the headlights will automatically go off after the battery is dead....lol....actually they should go off within 2-3 minutes of turning the key off...unless you have an open door or trunk...or engine hood...or maybe even a gas cap door...and your car is telling you "something's open" by the lights staying on....Take that Jim and see if it gets you anywhere.
Normally this condition is the result of a poor body ground connection. Testing for this can be deceiving. At the static(nothing on) condition, testing can show a good ground. However when a circuit is excited, it has a determined resistance and a set current flow. If the ground connection to this or a branch circuit is loose, corroded, or broken wire. This will allow just enough connection to show as being good, but not good enough to complete the circuit with the required amount of connection when energized.
The headlights are powered by the battery through the
ignition switch via a fuse. Check the relay and the fuse; the problem will be
in one of those two.
Hello David..some GM vehicles have a feature called Twilight Sentinel which provides a couple of minutes of "headlight on" time after turning the vehicle off. (Check your owners manual for this features operating instructions.)
If your headlights never turn off, the failure is most likely in the headlight switch as headlights are wired hot...meaning you can turn them on without the key in ignition.
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