2002 Pontiac Montana 3.4 V6 Engine.
Question: My tail,turn,brake light do not work. The
fuses and bulbs are all good. When I hit the
brakes shifter,and turn indicator lights go dim.
Please help me,I have to leave town(sick family
3000 miles away)my wife needs to be safe.
Thanks! God Bless.
Answer:
Sounds like you have a short or other wiring
problem. A common area of odd electrical
problems for rear lights is the circuit boards in the
rear assemblies that the bulbs plug into.
Sometimes they short out internally, and cause
back feeding into other lighting circuits. Also, look
into the plug for both of those circuits, and look for
corrosion.

This assuming that all bulbs ARE good. The
incorrect bulbs, or bent terminals on the bottom of
the bulbs can also cause this sort of back feeding.
Turn signal switch is also a possibility, but those
rear circuit boards are usually the cause.
Pontiac Montana Tail Lights And Brake Lights Not Working

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