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Pontiac Repair/brakes locking up

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Question
97 transport 3.4l, locks up after half km....no warning lights on...put on hoist & all 4 wheels locked, NO codes given.. so bled front drivers clipher & it worked...next day drove 1 km Before brakes locked up...bled abs booster & drove home ...Do I need Dealer's code reader to get codes ??
What can i do next ??

Answer
Hi Andrew sorry for the delay I never got notification of the question till now. it's not going to be an ABS issue you either have a bad master cylinder or someone added non brake fluid to the brake master cylinder any kind of oil added to it will make the seals swell in the master cylinder and in the wheel cylinders and calipers. a good indication that would be the boot on the fill cap if it's bloated up and swelled up that is a tell tail sign of an oil was added to the brake fluid. you need a code reader to get ABS codes there is no way to flash them like a check engine light for a engine computer.  

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Todd Puccio

Expertise

General auto repair,electrical issues,driveability issues,anti-lock brakes,SIR systems,HVAC,engine performance,Gm specific. I have worked at my current dealership since the 1990 model year anything much older than that I have limited exposure to. I do not have very much transmission experience so those question you may want to ask of another expert. When you send me a question let me know the exact make/model/engine and year for the car or suv you have it makes it easier to answer the questions that way. If your happy with the answer I gave you please feel free to Donate. This is a free service to you and I am not compensated at all by this web site. I have 22 years of experience to share with you and my knowledge wasn't free to me. I had to pay for my education.

Experience

Experience in the area: I have been a technician in GM dealerships for over 22 years and I am a ASE master technician. I work at a Buick and GMC truck store Previously I worked at a Pontiac GMC store for 18 years. I Served a a lead technician when dealership was on a team system. I just recently moved to a Buick,Hummer,Saab Store when my franchise was purchased by this dealership. Organizations: ASE master technician

Organizations
ASE

Education/Credentials
Education/Credentials:High school diploma,2 year vocational school degree 2 year college degree. Associates degree in applied sciences (auto technology)Awards and Honors: GMC master technician

Awards and Honors
Master GMC truck technician Master ASE technician in 9 categories

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