power windows, and door locks issues

[yosta218]

i have a 99 yukon, 4x4, and here is my issue
- my key fob doesnt work anymore, its not the battey cause i have replaced it since it stopped working.

- the power windows only work from the drivers door, except for the drivers side rear door window that wont roll down. none of the other doors window control works on its respective window.

- the power door locks do not work at all, from the key fob, or the controls from either front door. i have checked the 30A fuse in the dash that controls the door locks, and the lumbar support, and the lumbar does work, but the door locks do not. ive pulled the drivers side door panel apart to see what i can figure out and ive realized there are way too many wires than im used too, and without a wiring diagram im lost.

- my fuel gauge is erratic, it reads either empty, or full, and sometimes flips between the two at no specific time. and with all the electrical problems with this truck, i figure its not a part failure, but an electrical issue

any help would be appreciated, ive already rebuilt the rear end after it detonated, with an open diff from a chevy 1500. i bought the yukon for $1000 and am looking to flip it, but as a self respecting man i dont want to sell someone some garbage.

 

[corvhoe7795]

It sounds like you have corroded electrical plugs from moisture everywhere. Or maybe bad electrical grounds that are corroded too. Mother Nature has a way of corroding electrical contacts over time. Your fuel weirdness could be the sender inside the gas tank sending false signals to the dash gauge, or again bad plugs or grounds between the 2. A cheapie Haynes book helps as they have wiring schematics to trace wires. And a 12 volt test light is a very good thing to buy too. With a little patience and time you can find and fix any electrical problem.