C6 transmission
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Senior User
Joined: Sep 2018
Posts: 117
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From: Woodland, WA
Hi all:
I took the van to the shop yesterday to have the transmission looked at. I had the transmission filter changed while they had it in.
The transmission pan had been leaking a bit, plus the oil pan and valve covers leak a bit but nothing scary.
The shop gave the transmission a clean bill of health and I got out of there with just a $233 bill.
Basically the engine and transmission are in good shape for being 33 years old.
Now I'm not sure what was leaking under the van after my buddy and I added transmission fluid. Could be we added too much?
I took the van to the shop yesterday to have the transmission looked at. I had the transmission filter changed while they had it in.
The transmission pan had been leaking a bit, plus the oil pan and valve covers leak a bit but nothing scary.
The shop gave the transmission a clean bill of health and I got out of there with just a $233 bill.
Basically the engine and transmission are in good shape for being 33 years old.
Now I'm not sure what was leaking under the van after my buddy and I added transmission fluid. Could be we added too much?
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
C6's are tough sumbitches. I bought a 68 Merc Monterey a few years ago that had 57K on the odometer. That C6 was sticking between gears, added a bottle of Lucas Trans treatment and after a lap around the block it was shifting like new. If you add too much fluid it can come out the vent tube.
Lead Driver
Joined: May 2004
Posts: 5,040
Likes: 137
From: Maryville
Wow, you got lucky, my transmission is leaking from the shifter, gonna require dropping the valve body, at it's age a rebuild is due, gonna keep topping it off, wondering if I should replace my modulator valve, not sure if it's pulling in fluid or not. My friend has a C6 in his 95, has over 350,000 on it, leaks from the front seal, but still going strong, yet to be rebuilt.
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Senior User
Joined: Sep 2018
Posts: 117
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From: Woodland, WA
The transmission continued to leak at random. I had the van back at the shop and they replaced the pan seal and called it good. I asked them to check the filler tube and they said it was fine.
Everytime I used the van I had to add fluid. Finally my buddy Clint popped off the doghouse and we both saw the problem right away.
The leak turned out to be a loose filler tube with a broken o-ring.
We replaced the o-ring and remounted the filler tube using clamps. I suspect the filler tube should be welded back on but it's been over six months now and the leak is gone.
Everytime I used the van I had to add fluid. Finally my buddy Clint popped off the doghouse and we both saw the problem right away.
The leak turned out to be a loose filler tube with a broken o-ring.
We replaced the o-ring and remounted the filler tube using clamps. I suspect the filler tube should be welded back on but it's been over six months now and the leak is gone.
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fludoc
1968-Present E-Series Van/Cutaway/Chassis
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Jan 24, 2016 10:52 PM
