I have a 2002 Pontiac Montana that the back-up lights don't work on. I have checked the bulbs and they work in the turn signal socket. I have checked the fuse under the hood and it looks fine. Is there something else I can check?
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The problem is in the bulb, or the socket, or the wiring to these.
Whenever a turn signal flashes fast, know that one of the bulbs is not working.
You have already identified the problem as being the front one. Problem could be the hot wire, or the ground wire, or the ground connection to this bulb.
Start by taking a tester to the hot wire, and see if it is receiving electrical impulses when the turn signal is on.
( It probably is, unless the car has been in a wreck and has been improperly repaired.)
Then check the socket or the wires to is and see if the bulb is grounded.
I suspect the ground is defective, and either a new socket or a repair to the ground wire should fix you rights up.
God bless your efforts.
Check the socket the bulbs are in,use a test light,see if there is voltage to the sockets,they are most likely the problem,and if the right part number bulb is not in the socket,they will not work also.
I replaced the front right turn signal on my 2005 Pontiac Montana by reaching up from underneath. I tried removing the battery but the opening from above was too small. I was able to pull the ground effects open enough to get my arm in. When you reach the bulb holder feel for two wings on the bulb socket and give the whole socket a quarter turn to and it will release. The wires are long enough so the entire bulb holder will drop down below the vehicle so you can easily replace the bulb.
Reverse the step to put it back in. You will not be able to see what you are doing so I had someone guide me by watching from above. Took less than 10 minutes once I decided to change the bulb from the bottom. I did not need to jack the vehicle up or use ramps.
Turn the signal light on to the right and probe the contacts in the bulb socket with a test light to see if the power is there,your test light should blink,the other contact in the socket is the parking lights and tail light. if no power at contacts probe the wire it's self where it enters the socket for power.if you have it there the socket is faulty.
We had the same issue with our 2000 Pontiac Montana.Brake lights, turn signal lights, running lights, back-up lights and emergency flasher didn’t work at all or operated at random. The cause: poorly designed aluminum contacts on the tail light circuit board and wiring harness connector arced over and disintegrated with normal use.
Pull the tail lamp assembly, remove the electrical connector and look for burned contacts on the connector plug and the connector socket (they call this long plastic piece with the socket the circuit board: it includes the four bulb sockets.Replace the circuit board and the wiring connector.
You can DIY this job with basic auto mechanical/electrical skills and tools. The two circuit boards and the two connectors set me back $230 (2009 cost) for new parts.The electrical contacts on the factory replacement parts are improved.
I needed a T-30 torx driver to remove the tail light assembly (you need this to change out bulbs, too), wire cutters, wire strippers, electrical tape and an electrical lug crimper to do the job.