4wheeldrive stoped workin all of the sudden

Asked by Feb 16, 2016 at 05:52 AM about the 1996 GMC Suburban

Question type: Maintenance & Repair

Long story short bought sub used 250,000 plus miles when got it home I tested the 4wd
worked perfectly. But i let it sit in the yard for about 3 months till i could replace the spider
injector, plugs and wires. Got it done last week and I wanted to play around so I press 4L
nothing, no light flash no sound of it locking in. Same happen with 4H, but the 2H button
is fine light works and everything. Idk like could I have nocked a plug loose Cause I had to
disconnect a lot to do the spider injector. Or maybe a fuse blown, or sensor went bad, or
4H 4L switch is bad, or could it be from the battery dying while it sat and it mess with the
computer???

1 Answer

94,815

The transfer case shift motors fail a lot, you might try tapping on the motor assembly while someone try's to put it in 4WD HI and see if it switches, if it does then you need a new motor assembly, if it doesn't then you will have to start to run diagnostics on the electronics, that can get complicated, so if you have to go there get a shop manual with good wiring diagrams.

Your Answer

Add photo

Related Questions

Search GMC Suburban Questions

GMC Suburban Experts

#1 LouB
LouB
Reputation 1,340
#2 Larry Thibert
Larry Thibert
Reputation 200
#3 ShadetreeMech
ShadetreeMech
Reputation 190
View All

Related Models For Sale

Used Chevrolet Suburban
5 Great Deals out of 353 listings starting at $5,495
Used GMC Yukon
13 Great Deals out of 645 listings starting at $4,500
Used Chevrolet Tahoe
494 listings starting at $4,995
Used Ford Expedition
13 Great Deals out of 351 listings starting at $2,995
Used Ford F-150
303 Great Deals out of 8,874 listings starting at $1,600
Used GMC Sierra 1500
158 Great Deals out of 7,843 listings starting at $3,333
Used Dodge Ram 1500
68 Great Deals out of 545 listings starting at $2,985
Used Toyota 4Runner
5 Great Deals out of 412 listings starting at $3,750

Used Cars For Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.