Chev Suburban 2500 brakes locked.

[PKKK]

I know it's a Chevy but I thought I might gain some help here. My Chevy is an automatic. I've been driving it a lot but all of a sudden it is locked up. The transmission seems to be engaging properly but the brakes or hubs seem to be locked up...and I don't want to force anything. I checked the ABS fuse and it looks fine. Does anyone know what the problem is?

 

[cedicol]

What year is your truck? If it is a newer one it's possible that ther is some security switch somwhere.

 

[dzmbkilla]

is it equipped with hydroboost. a common problem is a failing hydro boost unit. the pin will engage it self slowly while turning or even accelling.

if its not id start with checking your slide pins on the calipers