Service four wheel drive

Your solenoid is stuck causing this issue it's not letting it back to 2wd faulty actuator

Most likely the actuator located on the front differential is stuck, or inoperable. Hope this helps. TJ

take the switches 2wd 4wd hi 4wd lo out of the dash and unplug them all then use small wire to jump the 2wd connectors then replace new 4wd button and new 2wd button

It is the buttons. It is about a $50 part new on ebay. Easy to replace. Just pull gently on the dash bezel. I believe there are two screws/bolts. Pull it out and disconnect the wire harness. Then just plug it in and put it back together.

You probably have a bad encoder motor.It is located on the side of the transfer case on the drivers side.It is black.The other problem they had with these was the switch but you have already replaced this so your next thing is the encoder motor.Hope this helps.Good luck.

sounds like a bad switch or selector motor.

try going into reverse for 10 feet then go to drive for 10 feet that might help if not it is to the wiring to you 4x4 engage system (wires to your wheel hub)

I’m happy to assist further over the phone at https://www.6ya.com/expert/john_2c7bb9c157d0baa8

w9fro..In1995, and other model years, the actuator used to engage the transfer case into four wheel drive is oil filled with a heating element.
When you select four wheel drive the element heats up, the oil expands and engages the transfer case. Unfortunately if the actuator fails, the truck remains in four wheel drive. GM has an improved actuator so the problem does not repeat.
As always, check the basics, power, grounds and switch at floor select before replacing the actuator.
Also, if the truck is truly stuck in four wheel drive, you can tell by turning the truck in a tight circle. If the front end wants to "bunny hop" it is definitely engaged.
Best of luck, let me know.
Regards,

while in drive, engage the 4wd, then shift into neutral for 2 or 3 seconds, then shift back into drive. it works for my '98 ram.

GOOD MORN SNOWED 18 INCHES ENGAGED FOUR WHEEL DRIVE IN BOTH HIGH AND LOW, FRONT LEFT WHEEL NOT PULLING RIGHT FRONT DID PULL. RODE AROUND FOR A WHILE. WHILE PARKING THE TRUCK IN MY DRIVEWAY THE FRONT RIGHT STOPPED PULLING IM STUCK IN SNOW NOW. TEN MINUTES BEFORE RIGHT WHEEL STOPPED PULLING THE DFROSTER BLOWER MOTOR STOPPED BLOWING ANY IDEAS