Hummer Electrical Gremlins

[jsbihn]

I appreciate the advice....
But first off I wasnt naming specific items saying that i need help with them only... I am trying to fix ever electrical gremlin these trucks have.

I guess what I also should find out is what are all the gremlins and issues these trucks have. I know I did a good temp fix for my shifter but when that brakes I actually made a indestructible shifter link that will not brake and it was 95% cheaper then buying a whole new cable assembly for one piece.

So basically what I am trying to find is fixes for the gremlins this truck has.
I also have the cubby to replace the OnStar module... I mean I dont use OnStar so out it comes and a little extra storage is nice.

Now I am trying to figure out why everything works great but after I changed the battery and all everything went haywire. The speedo happened like this before and it did the same thing as this time. Pegged itself out, then over the next few day slowly reset itself. The door lock never did it before but also... over the next few days reset itself. The other gremlins that hasnt reappeared for a while but now I am sure to jinx myself is the windshield wiper gremlin. Of course, I found the fix for that by Easy Ed on here.

And I am sure I have a few other gremlins... but those were actually just examples to start with

I wondered if anyone ever put a cap on there system to prevent high and low spikes and maybe its the high and lows that cause our system to act weird
Just looking for anything else to try to prevent the gremlins