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

Add photo

Related Questions

  • My 4 wheel drive stopped working 2 answers

    After struggling with the 4 wheel drive it stopped working. The last two winters the 4 wheel got cranky. If you shifted it in and out of gear it would engage, sometimes in low sometimes in high, now i...

    1990 GMC Sierra 2500

    -

    Maintenance & Repair

  • 95 GMC Pick Up 2500 Sierra SLE Extended Cab 1 answer

    While driving city streets my truck develops front end shaking or bouncing. When I slow down it stops. Feels like it is coming from drivers side wheel. Thought it might be tire balance problem. Rotat...

    1995 GMC Sierra 2500 2 Dr C2500 SLE Extended Cab SB

    -

    Maintenance & Repair

  • 2000 GMC SIERRA low oil pressure now won't do anything 20 answers

    We replaced a rear end on our 2000 Sierra 6.0L 4 wheel drive about 3 weeks ago couldn't test drive it right away cause it was stuck due to being in our pasture and it was super soft due to heavy ra...

    2000 GMC Sierra 2500 3 Dr SLT 4WD Extended Cab LB HD

    -

    Maintenance & Repair

  • 96 sierra starting issues 1 answer

    96 GMC Sierra k2500 5.7l vortec. I was driving down the road and my truck started sputtering and died. After that I can get it to crank but won't start. I took my alternator and battery to get tes...

    1996 GMC Sierra 2500

    -

    Maintenance & Repair

  • Service 4 Wheel Drive 1 answer

    2011 GMC Yukon

    GMC Yukon

    -

    Maintenance & Repair

Search GMC Sierra 2500 Questions

GMC Sierra 2500 Experts

#1 Rowefast
Rowefast
Reputation 150
#2 FordNut
FordNut
Reputation 100
#3 tennisshoes
tennisshoes
Reputation 70
View All

Related Models For Sale

Used GMC Sierra 1500
1,163 Great Deals out of 58,048 listings starting at $2,495
Used Dodge Ram 2500
183 Great Deals out of 5,631 listings starting at $2,395
Used Ford F-150
3,395 Great Deals out of 205,576 listings starting at $1,273
Used Ford F-250
552 listings starting at $1,977
Used GMC Sierra 3500
4 Great Deals out of 287 listings starting at $7,450
Used Chevrolet C/K 2500
267 listings starting at $3,900
Used Dodge Ram 1500
534 Great Deals out of 12,951 listings starting at $1,800

Used Cars For Sale

2004 GMC Sierra 2500 For Sale
3 Great Deals out of 39 listings starting at $7,500
2001 GMC Sierra 2500 For Sale
6 listings starting at $6,990
2000 GMC Sierra 2500 For Sale
35 listings starting at $8,990