1996 GMC 4 wheel drive

Asked by Nov 01, 2016 at 04:28 PM about the 1996 GMC Sierra 2500 2 Dr K2500 SL 4WD Extended Cab LB HD

Question type: Maintenance & Repair

My 1996 GMC k2500 won't shift into 4 wheel drive. When i push the 4hi
button the light just blinks and it won't engage the front tires. Checked the
voltage at the transfer case encoder switch and it had approx. 5 volts and
the ground had less than 2 ohms resistance so i am pretty sure that the 4
wheel drive switch and "brain" unit inside the truck are working ok. Checked
the voltage at the front diff actuator and found there was none. Does this
mean that the transfer case encoder motor needs to be replaced? Thanks
for any help on this.

1 Answer

I figured this out myself. Bought the transfer case switch thinking that was the problem but it wasn't , the old one was ok. What i should have done first was to check the fuse inside the cab on the drivers side( 25 amp fuse was blown). I put a new fuse in and tried to switch it into 4hi and the fuse immediately blew again. We traced the problem to the front diff actuator - it was shot. Bought a new one and installed, replaced the 25 amp fuse again and everything worked ok after that. Point is CHECK YOUR FUSES. Lesson learned.

Your Answer

GMC Sierra 2500 Experts

  • #1
    Rowefast
    Reputation
    160
  • #2
    tennisshoes
    Reputation
    90
  • #3
    JOHNG123
    Reputation
    60
View All

Related Models For Sale

Used GMC Sierra 1500
880 Great Deals out of 65,091 listings starting at $2,495
Used Dodge Ram 2500
163 Great Deals out of 4,958 listings starting at $2,499
Used Ford F-150
2,301 Great Deals out of 183,656 listings starting at $699
Used Ford F-250
472 listings starting at $4,000
Used GMC Sierra 3500
9 Great Deals out of 237 listings starting at $6,995
Used Chevrolet C/K 2500
198 listings starting at $3,999
Used Dodge Ram 1500
354 Great Deals out of 10,731 listings starting at $1,500

Used Cars For Sale

2004 GMC Sierra 2500 For Sale
31 listings starting at $4,800
2000 GMC Sierra 2500 For Sale
36 listings starting at $3,495
1999 GMC Sierra 2500 For Sale
7 listings starting at $6,995

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.