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Search Auto Parts Search 2003 Escalade EXT Pressure diff switch leak Sign up here!   Email This Post Auto Repair Home>> Automotive Repair>> Brake Repair Help Longunns New User Jul 19, 2018, 8:19 AM Post #1 of 4 (1164 views) 2003 Escalade EXT Pressure diff switch leak Sign In Installed front brakes on my 03 Escalade ext. and now have no pedal and the pressure differential switch is leaking. When I installed the brakes, I did not crack the bleeder to retract the piston. I have replaced the pressure differential switch. Still leaks. Thanks in advance. Hammer Time Ultimate Carjunky / Moderator Jul 19, 2018, 9:02 AM Post #2 of 4 (1154 views) Re: 2003 Escalade EXT Pressure diff switch leak Sign In Obviously, if you have a fluid leak you will have no brakes and the leak has to be resolved. If you replaced the switch and still have a leak, maybe the switch wasn't the problem in the first place or maybe you got a bad one. Either way, replacing brake pads shouldn't result in a leaking system. From the sounds of it, you are over your head in this repair and the brake system is no place to be making mistakes. I suggest you cut your losses and let a professional sort it out. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. Longunns New User Jul 19, 2018, 3:51 PM Post #3 of 4 (1129 views) Re: 2003 Escalade EXT Pressure diff switch leak Sign In Thanks for the info and the advice. However after a bit more digging I found that the plunger in the combination valve was stuck. AC Delco part #21998450. Replaced it, bled the brakes and it's good to go. Hammer Time Ultimate Carjunky / Moderator Jul 19, 2018, 4:13 PM Post #4 of 4 (1124 views) Re: 2003 Escalade EXT Pressure diff switch leak Sign In The only way that happens is a severe imbalance between circuits causing the slide valve to get jammed at one end. Improper bleeding causes that. That shouldn't have anything to do with a leak though. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.   Email This Post   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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