Jeep wrangler rear brakes won't lock up in two wheel but will in four wheel drive?

Answer 1

I just brought my Jeep in to the shop with a similar problem. When the Jeep was in 4-wheel drive, all 4 wheels would stop turning when I stepped on the brakes, but when I had it in 2-wheel drive and locked it up (on ice) only the front wheels would stop turning. My mechanic said that the rear brake adjusters were bad. The fix required two rear brake adjuster kits (about $30 each) and some other hardware like springs and whatever else. Parts and labor ran $340.