Question about 1999 Chevrolet S-10 Pickup

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Why does my 99 Chevy S10 keep jumping out of 2wd into 4wd? It don't want to go back into 2 wd with the yellow light lit?

My truck keeps going out of 2 wd into 4wd on it's own. I have to keep pressing the 2 wd button when in neutral to get it back in 2 wd, but it sometimes don't want to go back into 2wd?

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A common issue with the push button style 4x4 is that the retaining clip in the transfer case comes off of the shaft and allows the actuator to slip in and out of position. I recommend pulling the solenoid out and inspecting it.



Posted on Oct 01, 2016


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Tried switching from 4WD to 2 WD, it went into neutral. Mechanic said it is not the motor . I have a 1998 Ford Expedition with 215K miles.

Does the vehicle move when the car is in 2wd and in gear as all cars are permanently in 2 wd. The 4wd bit only comes into play when the transfer case is activated (servo/lever or vacuum actuator) and that brings in the front wheels . There is a condition called torque wind up when the vehicle is driven on hard surface and when you were luck enough for the 4wd to disengage it may have jumped the selector back to neutral from the pressure release on the gears . Come back with more details and find an accredited mechanic as he obviously has limited experience.

Feb 01, 2014 | Cars & Trucks

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4x4 K1500 Chevy Truck, 4 wheel drive repair instructions

There are a number of different hub systems so this may not work but it has worked for me on both auto and manual locking hubs. On a flat surface without traffic. Put the trans into neutral, shift the transfer case into 4x4, shift the trans into reverse and back the truck up 15-20 feet. Completely stop and shift trans into drive. See if this has locked the hubs in. If not, you can also try following the same instructions except shifting into 4wd low. Sometimes the hubs need a "bump" to get them to slip into place. Keep In mind that if the 4 wd low select works, you need to shift it back into 4 wd high before continuing! When taking the truck out of 4wd to 2wd, I recommend the same, shift to neutral, select 2wd, back truck up, shift back to drive and check. Its entirely possible that your hubs need maintenance (they're often overlooked) but hopefully this will get you going. Please let me know if thus worked or if I can offer other suggestions. Good luck!

Jan 18, 2012 | Chevrolet 1500 Cars & Trucks

1 Answer

I have a 1998 chevy k2500 pickup with a 5.7L V8. The problem i am having is with the 4wd. it has a 3 button electronic shift selector. when pressing the 4wd low button it will shift the motor and the front...

First, you do not need 4 low unless you're stuck out in the bush somewhere. Secondly, when you shift from 2 high to 4 high, it goes in immediately. To access 4 low, the tranny shifter must first be put into neutral, wait five seconds, then shift into 4 low. To shift out of 4 low back to 4 high, you must shift into neutral for 5 seconds again. They both flash at the same time because you have not shifted into neutral gear with the transmission.

Feb 02, 2011 | 1998 Chevrolet K2500

1 Answer

I removed the 4wd actuator on my 1997 1500 gmc located on the front differential and pressed the 4wd hi button in the cab. The actuator traveled out. I then pushed the device inside the differential...

4wd actuators are in the transfer case not the diff housing
on a diff housing it is more likely to be a diff lock to lock the 2 front wheels together

Jul 02, 2017 | GMC Sierra 1500 Cars & Trucks

1 Answer

Switching back 4WD to 2WD - 1998 Jeep Cherokee 4L Limited Petrol

With any 4WD like this, always move a few feet in the opposite direction when disengaging. If you were moving fwd in 4wd, switch to 2wd, back up a few feet, then go fwd.

Jun 30, 2009 | 1998 Jeep Cherokee

1 Answer

On a 2003 Avalanche with push button 4wd,

we had same problem,it was caused by shifting trans selector to quick after startup,not waiting for electronics to cycle on initial startup.

Apr 22, 2009 | 2003 Chevrolet Avalanche

1 Answer

Don't know how to use 4WD on 1995 jeep cherokee

the jeep cherokee has 2 different types of 4 wd systems. the command trac has 2 wd, 4hi, neutral and 4 low. if driving on pavement make sure it's in 2 wd. it also has shift on the fly, up to 60 mph you can move the lever to 4 hi and it will not hurt anything. if trying to go to 4 low, be rolling less than 5mph and put the trans shifter in neutral and move the 4wd selector to 4 low. do the reverse to move back to 4 hi or 2 wd

Dec 21, 2008 | 1995 Jeep Cherokee

1 Answer

I have a 2004 toyota tundra and tried to engage the 4 wheel drive and it won't engage it just keeps blinking any ideas?

Its possible the 4wd actuator on the transfer case is sticking from lack of use. Its a black plastic part located on your transfer case on the drivers side rear with a electrical connector attached. Tap on it lightly while someone activates the 4wd button. Have truck running in neutral with foot on brake. (dont get run over). If it goes into 4wd, then just remember to cycle it into 4wd and back again once or twice a month to keep it from sticking.
If all this doesn't work a dealer will need to look at it.

Dec 19, 2008 | 2002 Toyota Tundra

1 Answer

4*4 not eagaging light keep flashing

Wat i did was to install a reset button on the 4wd computer and each time it flash . i put it into neutral and press the button . For example If i mistakinly press the 4wd while in park the indictor will flash.I then have to put it in nuutrat press the button and it will stop flash and either select or come off from flashing.

Oct 13, 2008 | 2008 Toyota Tacoma

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