1998 GMC Sierra Lighting Problem
I have a strange set of lighting issues I can't figure out.
First one: Daytime running lights come on when truck is started. They remain on when parking lights are turned on. Switch to headlights and they go out. No low beams. High beams work.
Second one: Front turn indicators aren't consistent. Sometimes the front and side lights blink in sync, sometimes they alternate.
Third one: This one is weird. Reverse lights are doing their own thing:
Right turn signal on: both reverse lights blink
Left turn signal on: no reverse lights on
Gear selector in reverse: middle light and reverse lights on both sides
Gear selector in park, step on brakes: middle light and reverse lights on both sides
I have pulled out and verified the wires for the tail light assembly that runs by the back bumper, and removed the ground by the spare tire and cleaned it up and fastened it with no change.
Can anyone please give me some idea of what is going on?