how do you disconnect the 4 wheel drive on a 1999 GMC sierra, mine is stuck in 4 low i think i just want to disconnect the whole 4 wheel drive

Asked by Dec 04, 2011 at 12:57 PM about the 1999 GMC Sierra 1500 SLE 4WD Extended Cab LB

Question type: Maintenance & Repair

My truck is stuck in 4 wheel drive is there an easy way to disconnect the 4 wheel drive

4 Answers

10

Not sure how close my 03 Sierra 1500 is but, behind your transmission is your transfer case. Coming out of the transfercase on the driver side is the front drive shaft. (Its a quarter of the size of the rear drive shaft) it runs from the transfer case to the front differential. Mark with chalk or a crayon the orrientaion of the drive shaft to the differential flange. Remove the boot clip and slip the dust boot off the transfercase. Remove the four bolts from the universal joint and pry gently with a flat screw driver. You could lightly tap it with a hammer to loosen rust. Slide it forward supporting both ends and your done.

1 of 1 people found this helpful.
795

if your stuck in 4wd low< disconecting the front shaft wont do anything, being in 4 low limits ur speed going forward your never supposed to exceed 25mph. to get it out of 4x4 theres a shift acctuater on the case (depending on year of truck and options) youve got to get a power souce to the motor to shift it out of the 4wd low (not sure on the exact schematic) if still no luck you"ll have to have a garage fix the issue of being stuck in low range, i have see the contacts on the older truck 88-94 get dirt and loose connection with the motor and simply need to be cleaned and/or replaced

4 of 4 people found this helpful.
40

I had same problem. I had to slow vehicle to 3-5 mph switch to neutral hold button till light flashes on 2 wheel drive.Put truck into park after rolling a quarter of a mile or more.Push and hold 2 wheel drive and put into drive then only go 3-5 mph. keep repeating the process and it will eventually go back in 2 wheel drive. Good luck and be minded of low speed.

4 of 4 people found this helpful.

Cleaning all electrical connections. Regrease and try again. Same problem happens in 04 Durango.

Your Answer

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 63,049 nationwide Sierra 1500 listings starting at $1,200.

ZIP:

GMC Sierra 1500 Experts

  • #1
    dragonflyoffshore
    Reputation
    5,500
  • #2
    John Saffrahn
    Reputation
    3,780
  • #3
    Glenn Clingenpeel
    Reputation
    3,510
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,924 Great Deals out of 161,764 listings starting at $1,295
Used Ford F-150
3,205 Great Deals out of 226,285 listings starting at $1,250
Used Toyota Tundra
712 Great Deals out of 34,573 listings starting at $1,500
Used Dodge Ram 1500
373 Great Deals out of 11,016 listings starting at $1,699
Used Toyota Tacoma
648 Great Deals out of 40,818 listings starting at $2,000
Used Ford F-250 Super Duty
482 Great Deals out of 47,163 listings starting at $1,817
Used GMC Yukon
565 Great Deals out of 18,727 listings starting at $2,000
Used Chevrolet Tahoe
885 Great Deals out of 39,483 listings starting at $1,799
Used Chevrolet Camaro
497 Great Deals out of 31,046 listings starting at $2,495
Used Cadillac Escalade
269 Great Deals out of 11,486 listings starting at $1,200

Used Cars For Sale

2018 GMC Sierra 1500 For Sale
13 Great Deals out of 29,059 listings starting at $23,886
2017 GMC Sierra 1500 For Sale
95 Great Deals out of 6,562 listings starting at $19,999
2016 GMC Sierra 1500 For Sale
146 Great Deals out of 3,865 listings starting at $15,500
2015 GMC Sierra 1500 For Sale
209 Great Deals out of 5,771 listings starting at $13,500
2014 GMC Sierra 1500 For Sale
210 Great Deals out of 4,752 listings starting at $8,495

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.