Flasher, brake, reverse gear lights all mixed up especially when the head lights are on. The brake bulb doesn't come on at all. Changed the bulb still didn't work. Noticed one of the holes that receives the pin on the wire terminal socket (about 6 colored wires are combined on this plug) was burnt. Scratched the sooth and cleaned the hole, when everything assembled, still didn't work. Pretty sure it's this hole that's messing things up. The plug is attached to about 6 wires. How do I change this plug without having to change the entire wiring. Can I cut the wires and reconnect them with tape? If not, is there an easy way for this? Thanks for your response.
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Re: Montana 2000 - Right Rear Light Assembly
Yes, You can cut this and Tape the Wires Back. Get the New Module, Cut the Wires, Do Not just Twist them Together, Make a Loop on each Wire and Connect them together in this way. They are a Lot less Likely to pull loose with this Method. Use Black Electrical Tape and Tape them TIGHT. It should be just Fine. Please Rate My Response! Thanks!
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process for replacing tail light bulbs is the same in all models. If
you have a burnt-out tail light bulb, you may need to replace the
brake light, the reverse light or the turn signal. The procedure to
replace each of the bulbs is the same.
Open the Hummer's rear swing gate. This will expose the edge of the
vehicle's tail light assembly. You'll see two small Phillips head
screws that hold the tail light assembly in place. Put on your
Remove the two screws from the tail light assembly. Pull the tail
light out and inspect the back for two bulbs. The top bulb is the
brake light and turn signal. The bottom bulb is the reverse bulb.
Determine which bulb you need to replace.
the bulb's socket counterclockwise to disconnect it. Unplug the bulb
from its socket.
the replacement bulb into its socket firmly. Insert the socket back
into the tail light. Turn it clockwise to secure it in place.
the tail light into its cradle. Hold it with one hand and replace
the Phillips head screws with the other.
If you live in a area in which salt is used on the roads, you probably have a corroded ground connection.
These can be tough to find since there are several grounding points in most vehicles.
When a ground fails, the current (the applied 12V) will find its own path to ground and can pass through different light bulbs on the way.
If it was only the signal flasher creating problems, this can be caused by a single failed light bulb; the flashers are thermal devices and when the current is lower than it should be, the rapid flashing alerts you to the failure.
You might consider buying an after-market service manual from Haynes (my first choice) or Chilton.
The manuals I have for our various vehicles give a general location for the grounding points; for example, 'Right side engine'
For the brake light open the rear hatch and check beside the tail light. I believe ther is 2 phillips head screws right where the light meets the rear hatch on the body panel. remove them and gently yet firmly pull the lens assembly from the corner of the rear body panel. Squeeze the clips on the back of the socket and twist to remove the socket from the lens. Push gently on the bulb and turn carefully to remove light from the socket replace the light and reverse removal procedure to install.
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.
Often times the light socket assembly will become overheated in the Montana, (& Chevrolet Venture vans) and this will cause a bad contact between the light bulb and the socket. Sometimes it will also melt the plastic of the light assembly. If this happens, replace the entire assembly.
If it is not melted, sometimes just taking a screwdriver and pushing the light assembly contacts closer together will fix it - although in my experience you usually will end up replacing the light assembly after a little while (just putting off the unavoidable).
Many salvage yards should have this part if you want to save a few bucks.