Hi, my 4x4 1991 blazer have on digi dash BRAKE alert and my front wheels are stuck. I try 2x4 and 4x4 but nothing hepend. This is after 60 days not driving. What can be problem, where to look...

 

The brake light usually comes on if there is a serious leak in the brake lines somewhere. Front caliper seized perhaps? Brakes that have been sitting for a while can get a lot of rust built up between the disk/drum and the brake lining causing seizing too.

I've pulled old axles apart that the drum brakes were so seized that the brake friction material pulled off the shoe, and was rusted to the inside of the drum.

 

Put your truck in neutral and set the parking brake. Reove the front wheels and open the bleeder valves to relieve pressure. Close them up and put the wheels back on. DO NOT use your service brake. Start the truck and put it in reverse or drive (depending on how you're parked). See if it will move. If it moves until you hit the service brake pedal. If it still doesn't move, your calipers may be rusted in place. If it does, but not after you step on the service brake, you have one or both flex hoses up front that are bad. They can look fine outside but collapse inside. This will let pressure through but not let the fluid release as there isn't any reverse pressure.

 

Hi all, thanks for help. I have update with my issue. Now, front wheel are in the function but I have brake and ABS light on on my digi dash. Also I dont have 4x4. Light is on but my fromt wheels are dead. If I go in 4x4 slow the I dont see this light. In 4x4 fast there is light but it is same like I am in 2x4.