Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hi, I am Mike, welcome. I'm reviewing your question.
Do the front turn signals work?
Then tell me if the turn signal indicators on the instrument cluster work?
I see you are viewing my questions but you are not replying back. I will just give you the wiring diagram then get back to me if you have any questions for me.
Are you saying just one rear turn signal is out cause you didn't say right or left just rear. So, which is out?
Ok, using a voltmeter or at least a 12 volt test light see if you are getting a voltage on the wire feeding that right rear turn signal bulb, so remove the bulb and test the prongs in the socket. Make sure you turn the key to run and put on the right turn signal.
It's the dark blue wire.
Ok, then it has got to be a ground problem.
The ground is G402 and is located on the right side of rear package shelf.
Find the ground, undo it and clean the metal with a wire brush or sandpaper, re-attach the ground, make sure it is tight and check the turn signal again.
But the taillamps and stop lamps on that side are also grounded there so if they work ok, perhaps it's not the ground.
Do the tail lamps and stop lamps on the right rear work ok?
Is there a circuit board in that rear taillamp assembly? Is that what you replaced before?
Is there voltage on the wire for the stop lamps? If so and it's low, it sounds as though the 2 wires are shorted together.
Or the circuit board is shorted.
Ok, can you tell me if the circuit board would be upstream or downstream from testing those 2 wires?
Is there voltage on the wire for the stop lamps? If so and it's low?
Meaning coming from the turn signal switch, which comes first where the wire goes to the bulb or the circuit board. In other words does that voltage have to pass through the circuit board before it gets to the bulb?
The wiring diagram doesnt' even show me a circuit board there.
Ok, have you checked the voltage on the stop lamp wire yet?
If and when you test that stop lamp light blue wire and it's below battery voltage, I believe then that that wire is short circuited to that turn signal dark blue wire somewhere. It appears that it cannot be too far from the rear though because they soon separate before heading forward.
Get the voltage yet?
Find the short yet?
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