i have a 87 suburban. the rear wheel cyclinder went out. we replaced it 3 times. still no brakes so we replaced the master cyclinder and rebleed the brakes. still no breaks. the fluid is getting to the rear wheels but it will not make the cyclinder expand. does anyone have any ideas of what can be wrong an how to fix it ? i really need my ride thanks.
rear brake problem on 1990 GMC Suburban 1500
by greasymonkey in Belmont, NC on July 07, 2010
1 answer 1 comment
ANSWER by patrick mannion , July 07, 2010
If you are concerned the problem is in the rear wheel cylinders or rear brakes, locate the brake flexible line going to the rear axle, put a rubber hose over both jaws of a pair of needle hose vise grips and gently press the jaws closed on the rear flex line. You have now eliminated the rear brakes the pedal should be "hard" if the problem is indeed in the rear brakes. If the pedal is still soft the problem is not i the rear brakes. There is a company that independent auto repair shops "buy" their information from that offer a very reasonable service to do it yourselvers. You can get a one week subrcription or year subscription very cheap. The information is year make and model specific repair procedures, service bulletins, component locations, wiring diagrams ect.... great quality information same as the professionals have ,much better than generic workshop manuals from parts stores, much cheaper than the factory manual try http://bit.ly/mitchell_repair_manuals_online and get an online repair manual subscription.
COMMENT by greasymonkey , July 08, 2010
thanks for the tip i will try it tomorrow. thanks again