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Service 4x4 light is on...2000 gmc jimmy...replaced the switch on dash but nothing works..what is my next step to fix issue?

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  • GMC Master
  • 13,013 Answers

Two speed automatic or is it two speed selectable ? Either case the first thing would be have it check for DTC'S - diagnostic trouble codes . Both are computer controlled .
DTC B2725 ATC Mode Switch Circuit Malfunction
DTC C0300 Rear Speed Sensor Malfunction
DTC C0305 Front Speed Sensor Malfunction
DTC C0308 Motor A/B Circuit Low
DTC C0309 Motor A/B Circuit High
DTC C0310 Motor A/B Circuit Open
DTC C0315 Motor Ground Circuit Open
DTC C0323 T-Case Lock Circuit Low
DTC C0324 T-Case Lock Circuit High
DTC C0327 Encoder Circuit Malfunction
DTC C0362 4LO Discrete Output Circuit High
DTC C0367 Front Axle Control Circuit High
DTC C0374 General System Malfunction
DTC C0376 Front/Rear Shaft Speed Mismatch
DTC C0387 Unable to Perform Shift
DTC C0550 ECU Malfunction
DTC C0611 VIN Information Error

This for the two speed selectable
The transfer case shift control module normally has battery voltage supplied to it at all times through the battery positive voltage circuit (CKT 40). When the ignition is ON, the transfer case shift control module conducts a self-test to determine if it retains the same memory it had when the ignition was last turned OFF. This self-test indicates whether the RAM standby power supply to the transfer case shift control module pin C6 was interrupted, which would result in clearing DTC's from memory. If the self-test fails the transfer case shift control module sets DTC 1.

You can check codes without a scan tool on this two speed selectable system . Do you know what the DLC is ? Under the steering wheel , connector to plug a scan tool into ?
Important: Check the transfer case shift control module for DTCs. The transfer case shift control module is not a class 2 device. DTCs are displayed on the transfer case shift control switch. Use the following four steps to obtain DTCs.
Turn OFF the ignition for 10 seconds.
Connect PIN 13 on the data link cable (DLC) to a ground. The DLC is located in the cab under the instrument panel on the driver's side.
Turn ON the ignition, with the engine OFF.
Observe the transfer case shift control switch select buttons for flashing codes.
DTC 001
DTC 002
DTC 003
DTC 004

Posted on Dec 30, 2016

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Posted on Jan 02, 2017

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Nitrotrike
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SOURCE: 1994 gmc jimmy steering wheel removal

Gently pop off the horn cap / cover.

There will be a short wire attached, so be careful not to pull it too hard.

You will see the wire going into the metal frame of the steering wheel.

The wire will go into a "sleeve". Push the sleeve in, and turn slightly counter-clockwise to unlock the connector. The horn will beep a few times as you pull the wire out, just to warn you :)

You will now need a steering wheel puller. These can be bought for about $10 at any auto parts store.

Once the wheel itself is off, you will see a black plastic disk. remove it. Now you will see a metal disk with notches in it (this is what locks the steering wheel when you turn the key off). You may want to get someone for assistance for this one, as there is a pretty stiff spring behind the disc, so use caution. You will need to push the disc towards the dash and remove the retainer clip.

Once that is off, you will see the white turn signal switch. Remove the hazard switch button first, then the turn signal lever retaing screw (be careful if it has cruise control, as the wires are thin and delicate), then remove the 3 phillips head screws holding the actual switch on. Let the switch hang out of the way.

Now, you'll see the lock cylinder retaining screw. This is where you may have a problem if you don't have a key.

After removing the screw, you MUST turn the ignition switch to the "run" position and pull out the assembly.


Posted on Jun 19, 2008

  • 180 Answers

SOURCE: where is my 1 2 shift sensor 2000 gmc jimmy

Inside trans. pan at the rear of the valve body. They have a wire clip which holds them in.

Posted on Jan 21, 2009

Monster80
  • 460 Answers

SOURCE: '03 GMC 2500HD 4x4 problems

Take your positive cable off battery and wait a few minutes..This resets the computer and takes it out of limp mode.Theres been a lot of problems in the dash so if you can find an auto zone and have them scan it They'll do it for free.But as far as the lights my truck does the same thing. Just flick your fingers on the buttons and they should flash..The plug in the back of buttons was loose..

Posted on Mar 29, 2009

  • 47 Answers

SOURCE: my 2000 gmc jimmy is stuck in either auto 4wd or

Use the Owner's Manual to manually go into neutral and reset to 2WD HI. But then look under the hood check the fuses or look for wiring that may have come unplugged.

Posted on Nov 19, 2009

JayShelton
  • 3 Answers

SOURCE: My 99 GMC Jimmy has the service 4X4 light on and

I own a Jimmy and have done quite a bit of 4 wheel drive repair on it.
The first thing i would check is the 4x4 selector switch. I know for a fact that these will throw a service 4x4 code if they are unplugged or shorted. They sell for 50-60$ or you may find one at a local salvage yard for cheaper. Taking this out and checking it only takes a few seconds, just simply pop the switch out of the dash with the edge of your pocket knife. After you get it out theres a few more tabs surrounding the back plate, and this is where the circuit board is located. I would inspect it visually to make sure nothing looks corroded and also take a sniff of it to insure there isn't a burnt smell. If it were the 4x4 actuator the lights would still illuminate on the selector switch, it just wouldn't engage the 4x4. You'r problem is all electrical trust me .

Posted on Jan 05, 2010

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1 Answer

How to set the 4x4 electronic selector switch on a jimmy 2002


4X4

On these issue, there are few solved help links for troubleshooting the issue easily.-------

Click the link below: ---

No 4x4 light on dash?

http://repairhelpcenter.blogspot.com/2011/12/no-4x4-light-on-dash.html

-----------

4X4 Truck makes roaring noise in the front end?

http://schematicsdiagram.blogspot.com/2012/01/4x4-truck-makes-roaring-noise-in-front.html

-------------

Car will not go into 4WD high or 4WD low?


http://schematicsdiagram.blogspot.com/2011/12/car-will-not-go-into-4wd-high-or-4wd.html

--------------

No 4x4 light on dash?

http://repairhelpcenter.blogspot.com/2011/12/no-4x4-light-on-dash.html

------------

4 wheel drive system will not disengage?

http://technoanswers.blogspot.com/2012/01/4-wheel-drive-system-will-not-disengage.html

----------

4WD light is flashing and beeping? NO 4WD high?

http://schematicsdiagram.blogspot.in/2012/02/4wd-light-is-flashing-and-beeping-no.html

----------

2002 Jeep Wrangler: 4WD Idiot Light is ON?

http://technoanswers.blogspot.in/2012/06/2002-jeep-wrangler-4wd-idiot-light-is.html

----------

Traction control switch will not engage on 4WD High or Low

http://whoisbyme.blogspot.com/2012/10/traction-control-switch-will-not-engage.html

-----------

4WD light flashing and 4WD will engage after few minutes

http://repairhelpcenter.blogspot.com/2012/10/4wd-light-flashing-and-4wd-will-engage.html

------------

2008 Toyota Tundra: 4x4 Wheel Drive Light is Flashing?

http://technoanswers.blogspot.in/2012/05/2008-toyota-tundra-4x4-wheel-drive.html

----------

4x4 front differential will not engage the axle on ford?

http://technoanswers.blogspot.in/2012/02/4x4-front-differential-will-not-engage.html

-------

4x4 will not engage on Ford F150?

http://technoanswers.blogspot.in/2012/02/4x4-will-not-engage-on-ford-f150.html

-------------

Dodge Ram 4x4 light keeps flashing

4X4 LOW LIGHT IS FLASHING ON DASH

http://technoanswers.blogspot.in/2012/09/dodge-ram-4x4-light-keeps-flashing.html

----------

Ford 4x4 front wheels will not engage?

http://technoanswers.blogspot.in/2012/02/ford-4x4-front-wheels-will-not-engage.html

-------------

These details will help.

Thanks.

Nov 28, 2012 | GMC Cars & Trucks

1 Answer

Instrument panel light malfunctioning.


I have a buddy with a Jimmy and his lights did something similar, but once the dash illumination quit, nothing would make them come back on. We ended up replacing the entire light switch assembly, and it fixed it. We assume the dash illumination dimmer switch was shorted out. You may try getting a can of contact cleaner and taking the switch out and spraying all electrical connections related to your lighting to clean them up, THEN look into a new switch if that doesnt help. Hope this helped!!

Oct 26, 2012 | 1999 GMC Jimmy

1 Answer

1995 GMC Jimmy brake lights not working


Brake lights run through the hazzard switch. There are known problems with this, and the multifunction switch. You may need to buy a new hazzard switch and OR the multifunction switch. Before you do that, check the pigtail that goes into the brake switch up by the fender, make sure it's not shorting out up there. Happened to me!

May 06, 2017 | 1995 GMC Jimmy

1 Answer

No power to dash 4x4 indicator lights all fuses are good


  • for the lights check the fuse maybe the fuse is bsted and also check the wirings.

Feb 08, 2010 | 2000 GMC Jimmy

2 Answers

My 99 GMC Jimmy has the service 4X4 light on and


I own a Jimmy and have done quite a bit of 4 wheel drive repair on it.
The first thing i would check is the 4x4 selector switch. I know for a fact that these will throw a service 4x4 code if they are unplugged or shorted. They sell for 50-60$ or you may find one at a local salvage yard for cheaper. Taking this out and checking it only takes a few seconds, just simply pop the switch out of the dash with the edge of your pocket knife. After you get it out theres a few more tabs surrounding the back plate, and this is where the circuit board is located. I would inspect it visually to make sure nothing looks corroded and also take a sniff of it to insure there isn't a burnt smell. If it were the 4x4 actuator the lights would still illuminate on the selector switch, it just wouldn't engage the 4x4. You'r problem is all electrical trust me .

Nov 25, 2009 | 2001 Chevrolet Silverado 1500

2 Answers

2000 gmc jimmy is in 2wh drive,I switch to 4wh or 4whlow,or 4whauto and the light keeps flashes but never engages


Hi:
There are only two major components to that system:

A shift control motor, that is mounted to the transfer case, and a shift control module, which is mounted in the center dash area, below the radio. The module is the most likely suspect to fail, but the shift motor is a possibility still.

Nov 23, 2009 | 2000 GMC Jimmy

1 Answer

Service 4wd light


That's for the dash switch for 4x4- need to properly diagnose also you could have bad wires, most likely water intrusion for 4x4 module rt frt passenger kick panel inspect for white corrosion on terminals & connectors, clean with terminal cleaner from radio shack

Aug 13, 2009 | 1999 GMC Jimmy

1 Answer

Stuck in 4 wheeldrive


Have you gotten a service light? Sometimes these electronic things just freak out. It might be as simple as a new switch. There is a motor on the transfer case that is responsable for moving the levers in the case that use to be done by a lever from inside the truck. I think it may be possible to remove this motor and replace it with a lever. I would check into this by calling a local 4x4 shop, or a mechanic that specializes in 4x4 vehicles.

Jun 19, 2009 | 2000 GMC Jimmy

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