Is there a problem with my GMC Jimmy 4WD?

If you have 4 button Autotrac the transfer cases sometimes have clutch problems and use special blue syn fluid to smooth out. The Bang comes going back to 2WD. When going into 4WD, you hear the clicking of the relays and feel it shift and hear a low whine/rumble. 4LO seems to be working as advertised.

Why does my GMC Jimmy make Rev 2 / 4 noise?

That rev/2/4 thing is caused by an internal broken Sunshell and the neck breaks off all at once usually from drivetrain shock as hard 4wd or towing. Noise could be many things as u-joints, hubs, brakes, tires etc so need to look under it and start checking. Also look at the transfer case fluid and change every 50k as well as trans fluid/filter.

What to do if your GMC Jimmy has vibration?

Check/change the front and rear differential gear oil and the pinion seals can leak there too. Vibration must be traced to type – tire or drive train. If the U-joints are original and have no zerks on them they may be loose. Check the front wheel bearing and tire balance.

How to troubleshoot an automotive engine high idle?

The troubleshooting procedure for high and low idle conditions are similar, which are included in the following: Step 1 – If the check engine or service engine light soon has illuminated retrieving the diagnostic trouble codes could lead you in the right direction of what the problem is, or is related too.

Where is the actuator on a GMC Jimmy 4WD?

1. Check the vac hoses from the untake over to the reservior and T off to the actuator under the battery tray. 2. Chack the actuator (crawl under the pass side front) by looking /listening to see it the cable pulls the axle coupler. 3.

What was the last year the GMC Jimmy was made?

GMC Jimmy : Used The last-generation GMC Jimmy was a 4×4 SUV model available to Canadian shoppers from model years 1997 to 2005 inclusive. “Guilt-free” – the type of performance the Graphyte sport utility concept promises, according to Tom Stephens, group vice president of GM Powertrain.

How long does a Chevy 4.3L Vortec engine last?

3 vortec is a very strong and reliable motor, proven by it being the longest lasting production vortec engine. Generally, these engines are extremely capable of lasting up to 300,000 miles.

How does transfer case work on GMC Jimmy 4WD?

For 4Lo the transfer case has an encoder motor that is on the transfer case that engages a lower gear when you stop, put trans in neutral and push 4 lo and a clunk is heard. Again a sensor on the transfer case to tell TCCM it is engaged. Hope that wasn’t too confusing.

Where is the ABS sensor on a GMC Jimmy?

The front hubs each have an ABS sensor in the 1 piece hub for the ABS and Autotrac (only 4wd mode effected) to work. The rear sensor is in the transfer case.

Why are there no lights on my GMC Jimmy?

The drivers door open sensor was broken out of the dash below the fuse panel and I pulled the broken assembly out and got interior lights… and the lights on my 4×4 selector came on for a minute and went back off. The other problem I was having was the plastic tab on the back wasn’t holding the wire securely to the 4×4 switch.

What kind of transmission does a 1997 GMC Jimmy have?

Mine is a 1997 Jimmy 4×4. When it is cold outside, the transmission shift hard from 1-2 and takes quite awhile (as well as a low speed) to shift from 2-3-4. The RPM needle shakes violently back and forth thus preventing the vehicle to obtain speed. The vehicle WILL shift eventually, but this make going up a slight hill very slow and time consuming.

Where are the 4WD lights on a GMC Jimmy?

2.When selecting the Auto 4WD button the Auto light starts blinking and instead of being in the 4WD “on demand” mode it goes directly into 4WD. 3.No code or check 4WD lights appear on the dash.

What kind of problems does a 1993 Jimmy have?

I have a 1993 Jimmy. It has been having starting issues. We have heard everything from the fuel injectors needs to be cleaned to replacing the water pump. We have replaced the computer twice, the second time the garage replaced it free. But now it does not start but turns over.

Why is my 4 wheel drive light not engaging?

If you don’t shift it into neutral, the 4wd light will continue to flash and won’t get into gear. Seems to be a common occurrence on these trucks. Dodge dealers recommend engaging 4-lo, then back in 2-wheel drive, then back in 4-wheel drive hi (4H). This sequence apparently resolves the problem.

Why does my GMC Jimmy have a blinking dash light?

Blinking dash light means the sensor did not work/actuator did not work/ or the TCCM computer is confused – yes it can happen. After you check all operations try and disconnect the battery for 30 min and then retry and that should have cleared any error.

What kind of fluid does a GMC Jimmy use?

Finally, check the front diff fluid and make sure its full and the transfer case requires blue autotrak II GM fluid – this has a GM bulletin on it so do not use Dexron red in it due to the clutch packs in yours.

What does the security light on a GMC Jimmy mean?

Some models of the 2000 GMC Jimmy are equipped with an anti-theft security system. If the “SECURITY” light flashes when you open the door with the ignition off, this indicates that the security system is not enabled. Resetting the theft-deterrent system arms and activates it.

What was the GMC Jimmy in World War 2?

The GMC CCKW also known as “Jimmy” was a 2½-ton 6×6 U.S. Army cargo truck that saw heavy service in both World War II and the Korean War. The original “Deuce and a Half”, it formed the backbone of the famed Red Ball Express that kept Allied armies supplied as they pushed eastward after the Normandy invasion.