20 Most Recent 2000 GMC Jimmy - Page 3 Questions & Answers

55 psi that may be a little low but would that cause a misfire on cyc 3 only? NO that would affect all cylinders not just one . Do a compression test on # 3 cylinder .

No your vehicle doesn't have a chip key . You can just replace the key and lock cylinder . Without a key to copy ! Or the dealer can cut a key using the Vin # The Passlock™ sensor is separate from the key and lock cylinder. The key and the lock cylinder work together in order to determine if the proper ignition key was used to start the vehicle. The theft deterrent system has been incorporated into the body control module (BCM). The theft deterrent is provided in order to prevent the vehicle operation if the correct key is not used in order to start the vehicle. The ignition key turns the lock cylinder. The cylinder rotation produces an analog voltage code in the passlock™ sensor. This voltage code is received by the BCM. The BCM compares the voltage code to the previousely learned voltage code. If the codes match, a class 2 message is sent from the BCM to the vehicle control module (VCM)/powertrain control module (PCM). The message enables the fuel injectors.

Ignition switches are usually the culprit for wacky guages.

I'd use a fuel pressure gage, check fuel pressure, key on, engine off, first thing in the morning, 60--66 psi, spider fuel system. If you have the spider fuel stem, that system is noted for problems. There is a service bulletin for cold start-up problems, caused by fuel poppet valves sticking. Once you get it started, it runs fine the rest of the day. The poppet cleaning procedure shows to be a shop procedure.

It's the ignition switch in the steering column.

There is a module in the instrument panel that goes bad. When it does the gauge will move back and forth because the fuel is sloshing in the tank.

KEEP HOLDING THE H OR HOUR BUTTON THEN SAME THING TO M OR MIN BUTTON.

between 185 and 200 degrees Fahrenheit.

the doors are heavy and from wear and tear the circular holes become oblong. you can purchase a replacement set of door pins and bushings from autozone to repair the oblong holes and the door misalignment.

four nuts 17 mm hold seat and track to vehicle floor, then unplug wiring harness from bottom of seat and remove from vehicle. Caution- seat may have to be adjusted fully forward to remove rear bolts.

It depends, is it antifreeze or clear water? It could be condensation from the ac. Sometimes you can get under the vehicle and use a probe in the drain. It would probably be the best to clean out from inside, if that is the problem?

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.

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. 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. 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. 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 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

Did you check your fill tube, is this a hose or pipe? Also, check your evap system. When the problem is ongoing, can you get under the vehicle to visually see the leak. Is there a vent hose you can check? Does 5 dollars fill it up?

Hi can you in gage your 4wd if not then we have to find out y not before doing anything else solenoid on right side of front diff are known to give issues pull it out and see if it works could be a little oil coming so have a catch pail ready

Should be the same from 1997-2002.

I would say it the neutral safety switch on the side of the transmission not very expensive and not hard to replace pepe

This may be related to the antitheft system The system is known for turning off the starter and/or injectors when it fails. Is there a light on the dash that says SECURITY? This is a common problem worth looking into. http://www.diy-gm-security.com/ g" alt="26124045-n0ruldykmagyusv0wgntwhg0-2-0.jpg">

Check your plug and wire for the #2 cylinder.