Recalls Or Technical Service Bulletins

[reinovator]

[/Hello Again, I have a 1988 GMC Suburban, I think it is? I bought it as that, My Vin #Say other wise may be a Cross over model these are the first ten of the dash plate vin #(1GK16K7K) getting to the Point.

I have Had an intermittent electrical problem It seems to be coming from either the fuse box harness, fire wall junction, or the harness near the distributor.

The symptoms are as fallows; after running for 20 min. if I shut it off it wont always start right off. Sometimes if I move the column shifter it will start. When that doesn't work I let it sit for a while then it will start.

Other times I have to wiggle the wire coming down off the junction terminal on the upper firewall with the fuseable link at the point where it enters the loom, or I have to wiggle the larger red wires going through the firewall junction.

It will start after I do one of these.

Other things are when I touch the brakes my radio will go off momentarily while the brake is pressed and some times my turn signals are slow.

The engine performance is also effected. it seems to loose power when this acts up.

I have replaced the ignition switch on the column, I have rerouted the stereo memory wire. I also have dome light issues. and the horn quit working.

I had a 82 olds toro which had similar issues and I put a heat shield on the starter solenoid which helped, but I don't think these are related. I could be wrong.

Has anyone ran into this or a similar situation before?

This rig is stock, excluding the Pioneer cd player and the after market cruise control which is disabled.

This has got to be one of the weirdest wiring problems I have ever ran in to!

the body style is the 1982 to 87 but the vin shows it as a 89, it's the same as the 87 I used to make my 77 GMC Panel truck.

I'm thinking it's a combination of problems.

Any help would be nice thank you for your time DDOI'quote]

[reinovator]

Got part of it!!

 

My ignition switch has never worked right, its always been a little off, before I replaced it and after.

I decided to tear in to it to see if when I replaced the turn signal switch if maybe I pinched a wire putting it back together and it's now rearing it's ugly head. Well I hadn't so I decided to check the cam and the spring for the steering lock was broken, so discarded that and started checking fit on the ignition cam and gear adjusted the switch placement. Every thing worked fine un assembled.

As I was assembling every thing I would check component and mechanical operation, along with fighting the hi low head lamp cam and every time I put the collar which holds the turn signal switch the ignition cam would hang up. then wouldn't go into accessory position. With the collar off no problem, on it would hang up!

as I said to my self What the f? so I looked a little closer. I'll be the small spring which holds tension between the cam and rack on the ignition was upside down. so I inverted it and 'Sweet it works!' it fits better to! I never dissembled this part of the column, so it wasn't one of my stupid errors. I would never do any thing like that, I also have swamp land for sale.

 

I found another problem as I was reassembling the column a wire from the wiper switch had been pinched in the bottom screw holding the collar on.

I soldered and reassembled the everything and seems to work OK now. Still no horn next week end I'll try to get to that, hopefully its just a loose wire.

By the way where's the horn relay on these years. I don't see it in my diagrams, might not be looking hard enough though.

 

 

Now if I could just get it to quit smoking, ah that's another story