Howdy,

I have a '73 280 SEL (108) with 3 speed Auto and I'm having a problem on cold days. On warm days, I can put the auto into reverse and all is good, but when it's cold, it won't take any load and reverse the car. It eventually warms up and will lock into reverse. When started warm, I never have this problem.

The trans shifts in forward gears flawlessly and it appears that the previous owner has had it rebuild (new-ish case).

The service manual I have has a troubleshooting guide that mentions this problem can be attributed to a wrongly adjusted B3 band. I'm not even sure this is for my transmission, I suspect it is for a 4 speed.

Any suggestions out there?

Thanks,

Sholin

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Lt. Blue 1973 MB 280 SEL (108) with sunroof and console shift.
1996 Chevy Camaro Z-28 LT1.