Several times in the last year, my van started having issues with the VSS. I have changed my battery within this same time. Now I have no speedometer. The break light warning signal stays on. If I go over say 45 mph the check light comes on. When I have none of the problems everything is fine. But, my A/C/blower is not as well. I replaced the VSS and this has not corrected my problem. I did id go thru the local auto parts, but they never heard of it it due the part being obsolete.
I would like to know what the green and grey 12gaw wires go to in the battery area. Located around the battery area. I cant find where those wires may go. If there is some other area that I should be looking into, like behind the dash, I've been behind that as well, for speaker replacement, but that was 5 yrs ago. The dealership doesn't have info on this because it is obsolete to them now.
What makes this problem better or worse?
Just rough idling l in the morning, and slow trans shifting from 1st, 2nd gears
How long has your 1992 GMC G2500 had this problem?
RepairPal Certified shops can diagnose and repair your 1992 GMC G2500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Hello, a wiring diagram is required to figure out what wires go where and control what.
You'll have to consult a dealership that does have a wiring manual for your model, or obtain one via multiple possible resources -- try a web search, eBay, or a local parts store perhaps.
By the way, at my dealership, we have manuals back through the early 80's still...so...not so obsolete!
