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1997 GMC Sonoma 4x4 not engaging - Sonoma GMC Cars & Trucks

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Sounds like its tring to enage but won,t. making a moaning noise. changed shift cable and actuator

Posted on Oct 12, 2014

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Posted on Jan 02, 2017

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SOURCE: 4x4 wont engage

First thing to make sure of is to check for a blown fuse. The fuse location is marked 4WD and it should be a 25 amp fuse. If the fuse is bad, the lights on the 4wd console wont light up. If the lights do light up, then you can move to the transfer case. On top of the transfer case, toward the rear of the truck is a switch that has a 2 wire connector. That switch sends power to the front axle actuator when you try to enagage 4wd inside the truck. That could be bad. The switch is threaded into the transfer case and is still available through GM. If the switch is ok and the wiring that attaches to it is ok, then you can move up to the axle. Threaded into the front axle is the front axle actuator. These actuators are prone to failure in older trucks and is very prone to cold weather failure. You can test the actuator by removing it and then WITHOUT the truck running, put the truck into 4wd and then turn the key to the hot position. The plunger inside the actuator will extended outwards. More than likely it will be one of those 3 things. If it still wont engage, you may have a short in one of the wiring harnesses associated with the 4wd system. Also, you may have a damaged transfer case. To check the transfer case, put the truck in 4wd without it running and then crawl underneath and see if you can turn the front shaft by hand. If not....it's good. If you can....then the shifter forks inside the case are worn or damaged. I hope this helps.....start small and work your way up!

Posted on Jan 31, 2009

gladys_neal
  • 334 Answers

SOURCE: 2003 GMC SONOMA IS STUCK IN FOUR WHELL DRIVE

That is most likely the front differential actuator ...let me know how that works out please

Posted on Dec 08, 2009

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SOURCE: 1997 Sonoma won't go into 4wd. When the 4wd button is pushed it

check the actuator under the truck at at the transfer case may need adjustment or lube the actuator rod

Posted on Dec 14, 2009

  • 1 Answer

SOURCE: I have a 1994 gmc 4x4 and the front axles wont engage

If Your Front CV shaft is broken it will not engage...Shaft can be in visibly good shape, but you might hear a knocking sound or a shutter when turning sharply. I had this problem this last winter. Get under the truck and try and turn the CV by hand. if it can be rotated, it is bad.

Posted on Jul 05, 2010

  • 324 Answers

SOURCE: My 1999 GMC Jimmy 4X4

you might have an actuator out, some of those have a shifter, but a solenoid still has to be actuated

Posted on Sep 12, 2010

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On my 2004 gmc sanoma 4x4 when I turn in 2 wheel drive it seems to pull like 4x4 is still engauged.but it shows to be in 2 wheel.any suggestions thanks


the front axle actuator is stuck engaged. the actuator is located on the right side of the front axle. the part is easily replaceable.

May 06, 2015 | 2004 GMC Sonoma

1 Answer

4x4 will not engage


this may assist you engage in 4x4 and reverse for a few meters, normally this does the trick on the transfer case if not then either the electrics/switch to the transfer case is not not functioning or the transfer case itself.

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1 Answer

Is my 1995 GMC Sonoma 4x4 a half ton truck


small trucks like that are considered 1/4 ton. silverado 1500 1/2 ton an silverado 2500 3/4 and up. same goes for gmc

Apr 06, 2013 | 1995 GMC Sonoma

1 Answer

1997 Sonoma won't go into 4wd. When the 4wd button is pushed it


check the actuator under the truck at at the transfer case may need adjustment or lube the actuator rod

Dec 14, 2009 | 1997 GMC Sonoma

1 Answer

Vihecle comes out of 4x4 when you step on gas


make sure your fully stopped and in nuetral when engaging the 4x4, then put it in 4 lo or 4 hi. if it still pops out there is a problem with the actuator .

Nov 14, 2009 | 2002 GMC Sonoma Extended Cab

2 Answers

1997GMC Sonoma 4x4 engine cranks but wont start


sounds like a fuel pump problem. take off gas cap and have someone sit in the truck and turn iginition key to on. (do not turn key as if you were starting but to "on only") you should hear the fuel pump engage. if you dont hear the fuel pump then check the fuel pump relay. it is located behind the glove compartment. hope this helps...

Jul 04, 2009 | 1997 GMC Sonoma

1 Answer

Jumps out of 5th gear on the highway


Either you have a worn shift fork and fifth is not fully engaging or the synchro for that gear is worn Both are internal and if fork is worn I suggest you have synchro replaced as well..

Jun 21, 2009 | 1997 GMC Sonoma

1 Answer

1996 GMC Sonoma


the front diff. is engeged by a thermal acuator in the front center section. check that the wiring on the pass. side of the front axle is of, if so the the acuator is probably faulty. Best to get an aftermarket posi-locking shifter if you need to replace the thermal unit.

Sep 13, 2008 | 1996 GMC Sonoma

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