99 pontiac grand am brake issues
#1
99 pontiac grand am brake issues
Trying to make a long story short. Replaced front passenger cv axle, replaced both front brakes, replaced both rear wheel cyliders, replaced master cylinder TWO times! Still do not have brake pressure even after bleeding all 4 wheels and abs, and bench bleeding master cylinder. (multiple times) Their is a small leak where master cylinder and brake booster join, seems how their is not supposed to be a gasket where these two parts meet I am at my wits end, any suggestions will be appreciated! Some say with gm vehicles abs needs to be taken to a dealership and power bled but I am sure you car gurus know of a much cheaper solution for the leak and helping me to find brake pressure? (hopefully) Thank you.
#2
Retired
Yes, with GM ABS vehicles, you need a high end scanner or GM TECH2 to activate the ABS Bleed feature. The poor mans version would be to find a large gravel parking lot, get some speed up and slam on the brakes to the point where the ABS kicks on. A few passes like this should work. It did with my 2002 S10.
__________________
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
#4
Retired
It doesn't bleed the lines, it just bleeds the valves and pump inside the ABS unit. How exactly, not sure.
__________________
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
#7
Retired
What kind of leak at the joint?
__________________
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
#10
Senior Member
True Car Nut
if you have a leak there its getting past the seal for the petal rod in the master cyl. and will leak under pressure and make the car feel like it has air in the line