I still have a gremlin showing it's self on occassion.
So I thought I would list the symptoms to see if they all might come from one source, like the BCU or fuse box.
Things that do not work when it happens.

Front power windows
light around key hole
gear shift release solenoid
turn signals
courtesy lights

And on less occassion
will not crank
M+S lights on dash
Gear selector LED shows all symbols

Only leak I can find is the sunroofs, anything up in the ceiling that could be suspect?
Any good write ups on sunroof leak fixes?

Thanks again RG's

 

What does your battery output look like? How long since you put a new one in?

 

Hi. Battery is good, I have tried a new one. Truck runs and works fine, when it works.

 

Sounds like a bad ground in one or more spots. Break out the circuits guide and look for grounds that support several of those items. Also follow big black wire from battery and be sure the chassis ground spots for it are clean and tight.

 

Thanks SB, is the circuit guide in the rave?