Question about 2000 GMC Jimmy

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Service light on the 4 wheel drive

JUST TRYING TO FIG OUT WHT THE SERVICE LIGHT WOULD BE COMING ON THE 4 WHEEL DRIVE. BEEN TO TWO SHOP AND TRY WHERE CLUE LESS.CAN YOU HELP ME ON THIS ONE...THANK

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Well just took mine into a shop & it turns out service engine light was a bad locking gas cap I replaced it & wallaa fixed & the light is now off after being reset

Posted on Aug 05, 2008

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Posted on Jan 02, 2017

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I have a 2002 Silverado Z71. When I purchased the vehicle the 4 wheel drive did not work. I took it to the shop and they said the Transfer Case Control Module was bad. I replaced it. Everything worked fine...


I would check to make sure the correct ECM is installed in this auto right away before adding anything else to this truck.Check it like the shop should have, this angers me so when i hear this stuff. Neither shop should have been paid for bandage solution. Then get back to me.

Sep 17, 2013 | 2002 Chevrolet Silverado 2500HD

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My 2000 gmc jimmy 4x4 stoped working. It wont go into 4 hi. the vacume pump under the battery is good. can hear and feel the motor switch from 4 low to 2 hi. any ideas? Is there a code reader for this...


Hi, it sounds like your front diff engages but your transfer case is not. raise one of your front tires off the ground and see if it will lock up when you go to 4hi. If it does then the problem is your encoder motor that hangs down under your transfer case.

Aug 21, 2010 | 2000 GMC Jimmy

1 Answer

Service 4 wheel drive light was coming on going 2005 dodge dakota


needs oil you might have an oil leak,but what you tell me it sounds like no oil.adrian,,,,

Jul 28, 2010 | 2005 Dodge Dakota

1 Answer

My 1999 Ford Expedition 4 wheel drive service light on the 4 wheel drive is on..saying "service 4 wheel drive"? what does this mean and is it harmful to use the 4 wheel drive with the light on?


Usally these warning lights come on for a reason.
I would have someone plug a OBD II reader in and retrieve the code.
The code should be able to tell you specific information on why the light is on.
Until you find out I would not us the 4 wheel drive function.

Feb 07, 2010 | 2003 Ford Expedition

1 Answer

4 weel drive service light keeps coming on


I recommend taking this vehicle in for a basic transfer case inspection and switch inspection as well. this light will illuminate if the case is experiencing difficulties in shifting or engaging the 4WD system.


Aug 13, 2009 | 2001 Chevrolet Silverado 1500

2 Answers

Service 4 wheel drive


The service 4 wheel drive light comes on because there's a problem. The biggest causes of this I've seen are a software glitch in the final drive control module which the dealer can fix by reprogramming and the other is usually the electric actuator on the front axle housing. The only light that comes on by a timer is the one that says, "perform service" in your overhead console or odometer.

Apr 15, 2009 | 2005 Jeep Grand Cherokee

3 Answers

'93 Jeep Gr. Cherokee 4x4 switch warning


this switch does not switch the vehicle from 2 wheel to 4 wheel drive. Grand cherokee have a manual shifter for that. The 4x4 switch is on top of the transfer case and tells the driver information display what 4 wheel drive mode the Jeep is in. ex..if you have selectrac, in 2 wheel the rear wheels on the display will light up, in 4 wheel all 4 wheels will light up, in 4 wheel low it will have the word low lit up in yellow. This is the only purpose for this switch and a bad one will not affect the functioning of the 4 wheel drive. Check out Rockauto.com and a new one can be purchased for about 35 dollars. If you call the dealership and ask for a 4 wheel drive switch, they will have no clue what you are talking about. The actual name is " 4WD indicator light switch"

Feb 22, 2009 | 1999 Jeep Grand Cherokee

2 Answers

Four wheel drive wont engage


If you have push button 4-Wheel Drive, it is recommended that you use it every once in a while, in order to keep gunk, rust, and corrosion to build up on moving parts. The mostly likeley (though not definite) reason would be that you let the 4-wheel drive unused for so long that corrosion has built up on the parts and the actuator that engages the 4-Wheel Drive doesn't have the power to engage it past the corrosion. You'll need to take it in to be cleaned, or to have parts replaced. In the future, every month or so, engage 4-Wheel Drive and drive around in some mud, grass, sand, or any other loose ground for a bit, just to keep the parts moving and clean.

The service Four wheel drive light is to alert the operator the system is not being read properly by the ECU.

If the ECU loses contact with or position of the Transfer case actuator motor the service light will come on. Same thing goes for the front diff actuator.

So it may be a bad switch, sensor, or an actual problem in the 4WD linkage. This is not a Oil Change light that you can ignore a few extra weeks - it indicates a problem that should be taken care of ASAP to avoid costlier problems down the road.
Thanks for using FixYa - a FixYa rating is appreciated!!

Feb 21, 2009 | 2004 Chevrolet Suburban

1 Answer

4 wheel drive on my jimmy won't engage


try disconecting the battery to reset service light may not solve the problem but should allow u to put truck into 4 wheel

Dec 04, 2008 | 1999 GMC Jimmy

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