HELP! Curbside Drive Wheels not spinning

There might be another switch in your truck, Mine for example has axle lock & Diff Lock.

What type of truck you driving or I should say Stuck in

 

With the interlock engaged you still need traction of both the left and right side drive wheels on the same axle (either one) for the truck to pull.

 

the lock on most trucks lets power to both axles, but if you are spinning 2 different axles, either on the same side or different sides, thats all you will get.

 

Your truck dont have full lockers. This is normal when your stuck. The inner axle lock or power divider only locks the front drive axle assemble to the rear. You still have open differentials in the rears that will only put power to the side with the least traction. As long as one wheel on each drive axle is spinning the power divider is locked and thats all your gunna get. Some trucks have another switch that locks the differentials side to side also but it will be right with the power divider switch on a KW. Sounds like you dont have one. So no the interlock or power divider dose not lock all 4 together. It only lock the maine drive shaft to the short shaft between the two rears. This causes both ring gears to be forced to turn together but you still have the main differential in the rears that are not lockable.

 

If you had Mack rears, I'd tell you to apply light pressure to the brakes. Sounds counterproductive, but a Mack differential has a set of cams in the differential which sends a portion of the torque required to spin the one wheel over to the wheel that ain't spinning...so when you're stuck, light pressure on the brake increases the torque required to turn the wheel that spins, which increases the torque sent to the side not spinning to get it turning.


...but since you don't have a Mack, you might want to call someone to give you a tug. Just don't let 'em pull on ya too hard!

 

what happened with the t800

 

Looks like that GM pickup was pulling too hard on it! LOL.

WOW!