Question about 2000 GMC Jimmy

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Four wheel drive stuck in neutral. Won't go into 2high or back to 4 wheel drive. Transfer case was replaced. Its a 2000 Jimmy.

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If you have the push buttons on the dash board you must follow the instructions in your owners manual to return the transfer case to 2wd from neutral. I don't remember for sure but I think you must have the transmission in neutral, foot on brake, press and hold both 2wd and 4wdlow buttons at same time. My father who lives 45 miles from me has the Jimmy, I don't. Hope this helps, Jim

Posted on Jan 12, 2011

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Error message repair 4wd


I guess you probably don't know what transfer case you have ?
SERVICE 4WD
Refer to
?€¢
Transfer Case Description and Operation in Transfer Case - NVG 149-NP3


?€¢
Transfer Case Description and Operation in Transfer Case - NVG 246-NP8


?€¢
Transfer Case Description and Operation in Transfer Case - NVG 261-NP2


?€¢
Transfer Case Description and Operation in Transfer Case - NVG 263-NP1


The NVG 246 EAU provides 5 modes, Auto 4WD, 4HI, 4LO, 2HI and Neutral.
The four manual mode, or range gear positions, of the NVG 261 transfer case are:
?€¢
2HI - 2 wheel drive high range


?€¢
4HI - 4 wheel drive high range, part-time


?€¢
4LO - 4 wheel drive low range, 2.72:1 gear ratio reduction


?€¢
N - Neutral, 4 wheel


The NVG 263 transfer case provides the driver with 4 manual mode/gear positions:
?€¢
2HI - 2 Wheel Drive high range


?€¢
4HI - 4 Wheel Drive high range


?€¢
4LO - 4 Wheel Drive low range


?€¢
Neutral


With the info I've given you ,you should be able too now !
There is probably a code stored somewhere !
DTC B0790 DTC B2725 DTC C0300 DTC C0305 DTC C0306 DTC C0321 DTC C0327 DTC C0359 DTC C0374 DTC C0379 DTC C0550.

Jan 31, 2015 | 2004 Chevrolet Silverado 2500

2 Answers

Why is my 2000 GMC Jimmy is stuck in neutral


Sounds like you will need to check the front axle vacuum actuator (should be located under the battery in the engine compartment) and clutch cable from there to the axle. If vacuum and cable are OK, you may need to replace the actuator or something has gone wrong in the transfer case .

Aug 01, 2014 | 2000 GMC Jimmy

2 Answers

2000 jimmy cant turn 4 wheel drive on pushed thev button n light keeps on flashing n 4 wheel drive


The simple answer is to replace the TCCM (transfer case control module).
Being both cheap and inquisitive, I wanted to investigate further, and I will provide a more in-depth answer.

This answer pertains to various GM vehicles. These include the Chevy Blazer, GMC Jimmy, S10, S15, Sonoma vehicles from 1999, 2000, 2001, 2002, 2003, 2004, & 2005.
Specifically the 15748800 module for the NP8 option 4 button automatic 4X4 NVG-236/246 transfer case.

I doing research online, I find that 15154323 might be an alternate TCCM, and that GM redesigned the module and now sells the replacement for this module with a 12577412 part number for about $300.

This information refers to the 15748800 module.
2000-jimmy-turn-4-bqqpoqfgk1hfvr1c2liydaq2-3-0.jpg Symptoms. If the vehicle is started and driven in 2 hi, the vehicle operates normally.
If the driver attempts to switch the transfer case into any other mode, the transfer case makes noise as it shifts, the service 4x4 light comes on and the newly selected mode indicator light starts to flash.

2000-jimmy-turn-4-bqqpoqfgk1hfvr1c2liydaq2-3-2.jpg The TCCM is mounted behind the passenger side kick panel cover. It should be removed but left connected. Pin F4 should be monitored with either a lamp or meter. This pin should be high or 12 volts when in 2 wheel drive, and low or ground when in 4 wheel drive.
A quick test of the system is to ground the F4 pin, recycle the ignition, and try shifting the transfer case into and out of 4 wheel drive. ( I used a lamp based test light to be safe. Do not an LED based one.) If the mode indicator light remains steady and the Service 4X4 does not light, proceed with this repair procedure. If this does not resolve the issue, please proceed to troubleshoot the front vacuum system, 4X4 solenoid, 4X4 actuator, front axle, or front axle indicator switch.

If this test appears to resolve the issue, you will need to remove the TCCM module from the vehicle. Bend the 8 tabs away from the back cover. Remove the top cover, unscrew the board from the back cover / plate. turn over the board at a static safe work station, and measure the indicated 10,000 ohm SMD resistor. In this module, the resistor is required to operate near it's limits, and I believe that the conformal coating trapped heat and caused the resistor to fail. You can check other resistors nearby for a relative comparison. If found to be open, the resistor can be replaced with a higher power value 10,000 ohm SMD resistor, or a conventional 10,000 ohm resistor with wired leads.

The TCCM should be checked for corrosion on the connectors and cleaned if nessacary. The module can then be restored to the vehicle, and your 4X4 should work normally.

Please respond if this procedure helps you.

2000-jimmy-turn-4-bqqpoqfgk1hfvr1c2liydaq2-3-5.png Front view / pin side
f16f1 Connector Part Information1205210716 Way F Micro-Pack 100 Series (ORN) Pin Wire Color Circuit No. Function
E1 Tan 1569 Transfer Case Lock Soleniod Output
E2 - - Not Used
E3 PNK 1561 AWD/4WD Indicator Lamp Output
E4 Lt GRN/BLK 1563 2 HI Indicator Lamp Output
E5 BRN/WHT 1555 Transfer Case Position Switch Encoder Signal
E6 RED/WHT 1556 Transfer Case Position Switch Encoder Signal
E7 YEL/BLK 1558 Transfer Case Position Switch Encoder Signal
E8 DK BLU/WHT 1557 Transfer Case Position Switch Encoder Signal
E9 DK GRN/WHT 1133 Class 2 Serial Data Signal
E10 BRN 241 Fuse Output - Ignition 3 - Type III Fuse
E11 PPL 806 Fuse Output - Crank - Type III Fuse
E12 YEL 400 Vehicle Speed Sensor Signal
E13 PPL 401 Vehicle Speed Sensor Return
E14 BLK/WHT 1695 Four Wheel Drive Front Wheel Lock Telltale
E15 - - Not Used
E16 BLK/WHT 451 Engine Control Module Ground
F1 PPL/WHT 1565 4 LO Indicator Lamp Output
F2 TAN/BLK 1566 4 HI Indicator Lamp Output
F3 BRN 1560 Neutral Indicator Lamp Output
F4 GRA/BLK 1570 Front Axle Actuator Output
F5 LT BLU 2221 Vehicle Speed Sensor Signal
F6 DK GRN 2222 Vehicle Speed Sensor Return
F7 GRA/BLK 1694 Four Wheel Drive Switch Signal - Low
F8 - F11 - - Not Used
F12 BLK/WHT 1554 Transfer Case Encoder Signal Return
F13 LT GRN/BLK 431 Reference Voltage Feed - 8 Volt Reference
F14 LT GRN/BLK 431 Reference Voltage Feed - 8 Volt Reference
F15 - - Not Used
F16 LT BLU 1693 Four Wheel Drive Switch Signal
2000-jimmy-turn-4-bqqpoqfgk1hfvr1c2liydaq2-3-9.png Front view / pin side

Connector Part Information120528564 Way F Metri-Pack 280 Series (BLK) Pin Wire Color Circuit No. Function
A BLK 1552 Transfer Case Motor Feed - Clockwise
B RED 1553 Transfer Case Motor Feed - Counterclockwise
C BLK 1050 Ground
D ORG 1640 Fuse Output - Battery - Type III Fuse
2000-jimmy-turn-4-bqqpoqfgk1hfvr1c2liydaq2-3-14.jpg

2000-jimmy-turn-4-bqqpoqfgk1hfvr1c2liydaq2-3-20.jpg

2000-jimmy-turn-4-bqqpoqfgk1hfvr1c2liydaq2-3-27.jpg

Jan 28, 2011 | 2000 GMC Jimmy

1 Answer

Wont shift into 4 wheel high


check four wheel drive fuse transfer case switch stuck(common problem) or transfer case encoder module

Jan 01, 2011 | 2001 GMC Jimmy

3 Answers

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

2 Answers

Transfercase problem it is stuck in 4x4 low canot put it back in 2high connections look good


Try putting the transmission in neutral first then shift the 4wd switch to 4 hi.then try shifting normally.If the light on the 4wd is flashing there is a code in the 4wd system and you will need to get the code.Sometimes the encoder motor will gets week and will not be able to switch gears.

Nov 24, 2009 | 2000 Chevrolet Silverado

1 Answer

LAST WEDNESDAY WHILE OUT ON THE BACK ROADS, I DECIDED IT WOULD BE A GOOD TIME TO RUN THRU MY 4 WHEEL DRIVE (ELECTRONIC 2H, 4H, 4L, & ALL WHEEL), ALL OF THE SHIFTS WENT FINE, AND I THEN DROVE HOME. IN...


sounds like you have a combonation trans and transfer case issues. if you were running youre truck in four wheel on a hard dry surface, witch is not recomended , the trans probibly ran hot. as for the transfer case, it could be a combination of problems. dash switch/ actuator/vacum switch/ vacum canister witch is under the battery tray. all have to work in unison. service the trans first. if the truck has high miles, add trans conditoner, if you do not, it will slip. then the transfer case. refer to youre owners man for oil specs. youre problems are not uneque as these trucks are notorius for unreiable four wheel actiuation. hope i was some help.

Oct 27, 2009 | 2000 GMC Jimmy

1 Answer

I have a 2000 GMC jimmy the service four wheel drive light is on I was told it was the four drive buttons were bad switch them out and still has service four wheel drive.


The transfer case may be low on fluid. I know from experience that if the level is too low or too bad the light comes on. Either way I would have it serviced.

Aug 18, 2009 | 2000 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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