HELP!! 1979 GMC Pickup Brake Problems
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Joined: Jan 2001
Posts: 7,164
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From: Someone owes me 10,000 posts
Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
HELP!! 1979 GMC Pickup Brake Problems
Sorry it's not a 3rd Gen, but my brother needs help. He's put on new calipers, new master cylinder, new brake lines. Before the left front would lock up, the caliper on the rotor. So that's when he's replaced all the parts. Now it's still doing it. There's smoke coming out of it. It was fine for a couple miles, and now it has come back. Please help.
Could it be the proportioning valve, though I was told that only affects the front and back, not one side, again this only happens to the left side.
Could it be the proportioning valve, though I was told that only affects the front and back, not one side, again this only happens to the left side.
Thread Starter
Supreme Member

Joined: Jan 2001
Posts: 7,164
Likes: 1
From: Someone owes me 10,000 posts
Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
Forgot to mention, he got new hoses too. And there's no trash in the lines as the fluid comes out.
1. Check the runout of the rotor
2. Alignment of the caliper relative to the rotor
(centering from the leading edge of the pad to the trailing edge)
You are looking for a bent spindle ear or some such...
2. Alignment of the caliper relative to the rotor
(centering from the leading edge of the pad to the trailing edge)
You are looking for a bent spindle ear or some such...
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