Because so many systems are involved I would get set up to monitor system voltage during an event. Use either a DVM wired to the battery or main fuse/relay block or one of those cigarette lighter plug in digital voltmeters and watch your system voltage both during normal and faulty operation.

Also, do your interior lights have a light flicker when the truck is running?


George

 

Thank You for all the help guys, sorry for giving the ghost! I was on a vacation in Florida & left the Jimmy home.


My Thoughts exactly!

It has been in the back of my mind! Though to be quite honest I haven't checked into much as of late. It appears to be working, giving around 14V but, I haven't looked into it more than that. It was replaced close to 10 years ago. I have checked the harness to it & the positive cable both showing no corrosion.

I will definitely look into that tomorrow! As you said I have just checked the box & cleaned up the ground on there. So far just my girlfriend gives me grief about the truck & trying to get me to get another car, lets hope the horn doesnt start going off or she'll really get her wish, hahaha.

I'm trying my best not to give up!

I will definitely try to monitor voltage during an event but to be honest it comes on so fast & it momentary. Thankfully the engine does not get affected by the condition & she doesn't skip a beat.

Yes, the lights flicker when its running but only when the truck is at idle. If the engine is cold, the electronics & lights do not flicker & I have no electrical problems. But after 20-30 minutes or so the electrical gremlins show their face.

Thanks Again Everyone, I really appreciate the help!

 

That story does not sound like a short and easy one...As far as I remember disassembling the dashboard is a pain in .... for every car. Not to mention You may find nothing underneath :P Anyway, that does not look like a very difficult, but time consuming repair.
I'd like to add my 3 cents in regards to a voltage monitoring:

• get a wiring diagram
• make the list of a known symptoms
• locate the devices on a diagram
• bear in mind, the ground wire splits to a different power receivers, so by analyzing Your wiring diagram try finding the first ground wire, that match only the receivers with symptoms

The point is, that if You hook up with a DVM device to a good working (well grounded) circuit part You'd hardly find anything.

It's not the battery nor an alternator, as You'd have problems cranking Your engine (hell yeah, there's a huge current consumption).

GL with finding Your faulty wire.

 

I initially missed the part where your engine never misses a beat. Please list all functions that have malfunctioned and I'll give you sone ideas where to start.

George

 

Good News Folks!

Although I can't explain much, because I'm not exactly sure what fixed it. I gave it a week thus far to be a bit more sure that it's fixed.

I went through the engine bay again checking grounds & other wiring, everything checked out. I went underneath the driver's kick panel & took apart connectors to the BCM, they looked good but I blew some compressed air across them & put em back together. I ran some 12 gauge wire from the underhood light ground on the firewall & routed it through the fender & through the rubber bellow for the driver's side door. I routed it to the set of grounds on the firewall near the instrument cluster. I buttoned everything up & she hasn't skipped a beat since. I don't know what exactly fixed it to be honest. Lets just hope the problem is solved! At least it happened right when I was test driving Tahoes, hahahaha. The only strange thing, is now the dimmer does not dim the overhead console display or the radio display. I could really care less but, I found it strange.

Thanks Again Guys!!