2strokeTRush

Hey guys so i have a 97 Tacoma 2.7 5speed with 135000 miles on it and have noticed something unusual lately. I tow a little Jon boat about 4 miles down the road about twice a month and when i pull it off the ramp i always lock my hubs and engage 4 low as its a very steep boat ramp. Keep in mind not a heavy load at all! Well i drive it home, in 2wd and go to use my brakes and they just about lock up! almost to the point of stalling my truck, I drove on some gravel and they did lock up and i wasnt even braking hard, it seems after a little driving this goes away though. Is something not disengaging? sometimes there is a squeel while braking to. Someone please let me know whats up! THANKS -Tyler