Wont shift into 4x4 - 1999 Chevrolet Silverado 1500

Ford Rangers and Mazda b-series vehicles are the same. I would be willing to bet it is a problem with your shift motor. There is a sensor on the motor that tells the "shift computer" where it is in regards to position. The sensor has a ceramic disk that is glued to a shaft. The glue dries out and the disk doesn't spin with the shaft, so the computer doesn't know the position. You can disassemble the shift motor and re-glue, or just replace the entire shift motor assembly. It's $85 - $100 for a remanufactured unit from Napa (or similar). I just did this for my '94 Ranger, tore it apart and fixed it.

Before doing any of that I would check the 4x4 fuse in the box under the hood. The other fuse to check is inside the cab. It is on the same circuit as the warning lights (if your dash warning lights work, that fuse is fine).

Here's a guide for troubleshooting other transfer case issues.

Transfer Case Troubleshooting The Ranger Station

i think you will need to fix /replace the transfer case

check the wires on the overdrive solenoid on top of the gearbox .if ok change the overdrive relay.

okay i have a 1998 Honda 450 foreman 4x4 foot shift that will shift up out of what i believe to be first gear but it wont shift down to neutral please help

If you are trying to get out of 4x4 and your truck is parked, probably it would not change the gear. You have to try the following: If it is standard shift, start the truck change to second and third gear, then try shifting off the 4x4. I think the same works for the automatic transmission.

Remember go got to be driving in order to get the 4x4 off.

there is an aluminum shift fork behind the actuator that has a knurled end on it.that end breaks off and will not allow the diff to lock in.you will need to remove the passenger side axle and the actuator to access.also check the transfer case shift module.also common on that vehicle.

Could be a transfer case shift solenoid or the relay that activates the solenoid.

Sounds like you got a bad trans. Was it used? Does it have a warranty? Can you shift it with the linkage off? Is everything adjusted correctly?

if its manual shift,its internal damage,if its elect.shift could elect.shift motor and,or internal damage

try putting your truck in neutral and then shifting into 2 wheel drive shift on the fly does not apply to 4 low only 4 high and on electric shift models it wont shift unless your ****** is in neutral.