My neighbor has a 1996 K1500 with a 5.0 that he wants me to fix. Shop told him it'd be nine million dollars for everything. Well everything was a new rear end, an exhaust leak, and brake lights and hazards are inoperative.
God are these brake lights killin me! I searched around and found the multifunction switch goes bad on these. Well that made sense, because the hazard button wouldn't push down! So I said there's my brake light problem too. So i put a multifunction switch in. Well it fixed the hazards, but not the brake lights. So I checked the fuse, pulled the relay and jumped power to the brake lights.. and only the high mount brake light comes on!
I checked the stoplamp switch on the brake pedal, and it seemed ok; nothing burnt up or anything. I took it apart.
The turn signals will light up the same damn filament in that bulb, so obviously the circuit board is good, and the ground is good. The hazards flash that same filament to create the hazard blink. But I cannot send power to those bulbs with the brake pedal, and even if i could only the high mount works!
Anyone know what that's about? I'll put a stoplamp switch on it just for fun, but it's not activating the relay anyway.
New multifunction switch.
If anyone has a wiring diagram that would be helpful; hate to buy a chilton and then it's not in there, or is vague.
Or an alldata password. I had one for years but then it got changed, and i don't work there anymore.