4wd quit working. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

c-tenkid · 03-08-2004, 02:51 PM

I have a 1990 chevy light duty 3/4 ton.It's a 2500 but''s it 6 lug has a 14 bolt rear.(Not sure what else is different than a 1/2 ton)

Anyway yesterday I was driving through my yard so I could get my car trailer.I had it in 4 high so it wouldn't tear the grass up.I got out to hook the trailer up and when I got back in the 4wd light wasn't on and it wasn't in 4wd anymore.Same thing today.

There is a wire under the front diff that sometimes comes dissconnected and it quits working but I checked it and it's still connected.I really don't know what else to check.

Anyone have any idea's.

03-08-2004, 02:51 PM	#1
c-tenkid Registered User Join Date: Apr 2003 Location: Festus mo Posts: 370	4wd quit working. I have a 1990 chevy light duty 3/4 ton.It's a 2500 but''s it 6 lug has a 14 bolt rear.(Not sure what else is different than a 1/2 ton) Anyway yesterday I was driving through my yard so I could get my car trailer.I had it in 4 high so it wouldn't tear the grass up.I got out to hook the trailer up and when I got back in the 4wd light wasn't on and it wasn't in 4wd anymore.Same thing today. There is a wire under the front diff that sometimes comes dissconnected and it quits working but I checked it and it's still connected.I really don't know what else to check. Anyone have any idea's. __________________ 69 c-10 lwb,Converted to 4x4,dana 44f,12blt,4 inch lift,vortec headed 355,th350/np203 34x10.50x15 swamper tsl's



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