2000 k2500 No Power to Rear Drive Shaft

[rayquaza]

Cliff Notes

- Runs and drives in 4Lo

-Only gets power to front wheels

-No power to rear wheels

-Only takes off after 1000rps

-Does not take off in 2Hi or 4Hi

-Shifts hard

 

Possible Problems 

-Transfer case 

-Transmission 

-Rear dif

-4x4 shift selector

 

 

Ok, I'm new here and I have an issue I've never seen before.

 

I have a 2000 Chevy GMT-400 k2500 LS that doesn't get any power to the rear drive shaft. The weird part is that it still drives in 4Lo. It only provides power to the front wheels, only takes off after 1000-1500rpms, and isn't really a smooth ride.

 

It doesn't even take off in 2Hi or 4Hi. What I need to know is if anybody has seen this before and knows where this could be coming from. I'm thinking transfer case, transmission, or the 4x4 selecto switches. 

 

To my knowledge this truck is supposed to be mainly powered by the rear wheels so why do I only get power to the front?

 

Note: I know it's getting power to the front because I've driven it without the rear drive shaft being connected at all. When I put the rear drive shaft back on, it drove exactly the same. I just figured if I had a bad transfer case, the front wheels would be the first to go out.

 

Please help

 

Edited March 10, 2025 by rayquaza

[asilverblazer]

18 hours ago, rayquaza said:

Cliff Notes

- Runs and drives in 4Lo

-Only gets power to front wheels

-No power to rear wheels

-Only takes off after 1000rps

-Does not take off in 2Hi or 4Hi

-Shifts hard

 

Possible Problems 

-Transfer case 

-Transmission 

-Rear dif

-4x4 shift selector

 

 

Ok, I'm new here and I have an issue I've never seen before.

 

I have a 2000 Chevy GMT-400 k2500 LS that doesn't get any power to the rear drive shaft. The weird part is that it still drives in 4Lo. It only provides power to the front wheels, only takes off after 1000-1500rpms, and isn't really a smooth ride.

 

It doesn't even take off in 2Hi or 4Hi. What I need to know is if anybody has seen this before and knows where this could be coming from. I'm thinking transfer case, transmission, or the 4x4 selecto switches. 

 

To my knowledge this truck is supposed to be mainly powered by the rear wheels so why do I only get power to the front?

 

Note: I know it's getting power to the front because I've driven it without the rear drive shaft being connected at all. When I put the rear drive shaft back on, it drove exactly the same. I just figured if I had a bad transfer case, the front wheels would be the first to go out.

 

Please help

 

I'm inclined to say transmission problem, and the only reason it moves in 4 low is because of the lower gearing present allowing the weak transmission to move the truck. 

Edited March 10, 2025 by asilverblazer

[CamGTP]

Can you hear the transfer case motor moving when you select 4HI and 2HI??