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Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Suspension - Brakes - Steering> Brake surge when stopping
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Topic Review (Newest First)
10-17-2019 06:06 AM
Unclebuck Update, after changing the drums, shoes and wheel cylinders I still had the problem. I did put it in neural and applied the brakes, it was twice as bad. So I dropped the transmission and changed the torque converter, no more problems. The shudder stopped, no more bouncing, the rough idle is smooth and acceleration is as it should be. To find the problem I jacked up and supported the rear on stands, ran it to speed and it had the vibration so I removed driveshaft and same shaking, then unbolted torque converter and it was smooth. Thanks
10-10-2019 07:49 PM
55 Tony If you suspect the locking torque converter is staying locked, put it into Neutral and stop to see if it makes a difference.
10-10-2019 08:30 AM
39 master I have a later model Silverado and it also "pulses" or surges. Found this is caused by small metal bits from the brakes getting on the ABS sensors. Quick fix for me is to take a garden hose and hit the front wheels full blast. This usually washes the filings away. Try this before moving on to costly items.
10-10-2019 07:51 AM
Unclebuck I forgot to list new calipers, wheel cylinders and flex brake line up front. It doesn’t feel like it is in the front end. I can hammer the brakes with hands off of the steering wheel and it stops straight and quick. It’s a mid to rear hopping
10-10-2019 07:41 AM
RWENUTS Maybe calipers?
I had a sticky one on my 94 gmc acted like that.
10-10-2019 06:13 AM
Brake surge when stopping

I’ve been having a surge when braking for over a year now. It’s in the middle of the truck (95 gmc 1500) and it’s not happening when I apply the parking brake to diagnose the problem. If I lightly pump the brakes excessively and then brake to a stop it’s not as bad. Could I have a bad load proportion valve or maybe abs problem. At first it would come and go but now it’s all the time. Everything has been professionally check and all checks out. New shocks, steering components, rotors, drums, pads, shoes, wheel bearings, axle bearings, rear axles, driveshaft, trans mount, motor mounts, wheels, tires. I’m ready to pull the trans and change the torque converter bc I’m thinking it could be trying to stay locked. I’m at a loss. ???

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