C6 Trans won't shift out of park

Clutch, transmission, rear axle

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fordtruckparts
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C6 Trans won't shift out of park

Post by fordtruckparts »

HELP!!

I just got my C6 rebuilt, and I installed it in the truck, and when I put it into reverse, it just sits there like it is still in park. Same with the forward gears. I have hooked the vacuum line into the trans, hooked up the shift linkage correctly, and filled it with Tranny fluid. Vacuum pressure is 18 inches. I did not rebuild the trans myself, it was done by a professional shop (Mr. Transmission). I would assume that it has been done correctly, but of course, I cannot comment on it for sure.

What do you guys think is the problem here? Where should I look first? :?
1948 Dodge 2.5 Ton, 1959 International Harvester BC-180, 1959 Willys Pickup, 1965 Impala HT, 1965 Galaxie Convertible, 1967 Mercury M-100, 1969 F-250, 1971 F-250, 1976 F250, 1978 F-350, 1979 F-250, 1980 Dodge D-300, 1984 F-250, 1986 F-150, 1987 Chevy Monte Carlo, 1988 F-150, 1988 Mustang, 1990 F-150, 1994 Camaro Z28 LT1
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saidyene
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Re: C6 Trans won't shift out of park

Post by saidyene »

I would look over everything I had done first then call up the shop that rebuilt it. Being that they were just in the trans they may have an idea what the problem is.
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fordman
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Re: C6 Trans won't shift out of park

Post by fordman »

make sure the trans is warm when you check if the fluid is full. then call the mr transmission place.
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AlleyCat
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Re: C6 Trans won't shift out of park

Post by AlleyCat »

How much fluid did you put in? A C6 with the converter empty holds about 12 quarts of fluid.
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michael69
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Re: C6 Trans won't shift out of park

Post by michael69 »

Did you get the torque converter seated all the way and flex plate tightened to converter? :?
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fordtruckparts
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Re: C6 Trans won't shift out of park

Post by fordtruckparts »

I did get the converter seated correctly and the flex plate tightened up. I have about 9 quarts of fluid in it. I also re-checked my hookups and everything is correct. I'm gonna warm it up today and see what the level reads when its warm. I am also going to pull the tranny cooler line off to see if there is any oil coming out. I'll keep everyone posted!
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Re: C6 Trans won't shift out of park

Post by BobbyFord »

fordtruckparts wrote:I did get the converter seated correctly and the flex plate tightened up. I have about 9 quarts of fluid in it. I also re-checked my hookups and everything is correct. I'm gonna warm it up today and see what the level reads when its warm. I am also going to pull the tranny cooler line off to see if there is any oil coming out. I'll keep everyone posted!

3 quarts low is why it ain't moving...
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Re: C6 Trans won't shift out of park

Post by fordtruckparts »

Got it working, topped the fluid up to 12 quarts!! I'll never trust my colourblind dad to tell me what the dipstick says again, haha!! :fr:
1948 Dodge 2.5 Ton, 1959 International Harvester BC-180, 1959 Willys Pickup, 1965 Impala HT, 1965 Galaxie Convertible, 1967 Mercury M-100, 1969 F-250, 1971 F-250, 1976 F250, 1978 F-350, 1979 F-250, 1980 Dodge D-300, 1984 F-250, 1986 F-150, 1987 Chevy Monte Carlo, 1988 F-150, 1988 Mustang, 1990 F-150, 1994 Camaro Z28 LT1
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