AT ABOUT 5AM WHEN I GO TO WORK MY CAR WILL ONLY SHIFT TO DRIVE. WHEN THE WEATHER DROPS BELOW 70 DEGREE MY CAR WILL ONLY GO INTO DRIVE. TWO TIMES IN THE LAST TWO WEEKS I WAS DRIVING AND CAME UPON A STORM WHERE THE AIR WAS COOL AND MY CAR SHIFTED FROM OVERDRIVE INTO DRIVE AND STAYED THERE. THE CAR DOES NOT DOWN SHIFT BELOW 70 DEGREES. WHEN IT IS OVER 70 DEGREE THE TRANSMISSION WORKS FINE IT SHIFTS TO EVERY GEAR AND DOWN SHIFTS. I HAVE HAD THE CAR FOR ONLY ABOUT 30 DAYS SO I DON'T KNOW MUCH ABOUT THE CAR. AUTO TRANSMISSIOM WITH OVERDRIVE
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in the causes for p0753 code there is a shift solenoid ( which you have replaced ) also TCM and a ECM. The transmission TCM (transmission control module ) is responsible for most of the problems so have it checked out especially the wiring and connectors to the TCM
Sounds like contaminatioin in the transmission fluid causing problems in nthe valve body of the transmission.Do a transmission fluid and filter change and have the transmission flushed.If that doesn`t work you will have to drop the pan and remove the valve body and inspect it for scoring and inspect the valve body seal.
Anything is possible in cold weather. BY driving earlier the transmission oil would have warmed up so the reverse should have worked. I'm thinking that may be from applying the park brake that the brakes are frozen to the drum/disc from the water / snow
The transmission valve body becomes tight in cold weather
After it is at 180 degrees it will expand some
If you remove & clean it,change the fluid & add one bottle of red lubegard with Mercon V Fluid-- that is about all you can do, other than look at data & have all engine sensors working correctly, so the shift strategy is correct
Synthetic 80/90 hypoid works great for freezing/cold climate driving. You may notice it is harder to push the transmission into gear. some times the syncros slip more with synthetic oil slowing down the gear speed/mesh action (a slower-harder shift). If you notice this after the oil change, and do not like the synthetic, it is not that expensive to change it back. If you do a lot of driving below 30 degrees or especially below 0 degrees you may want to try synthetic hypoid. it makes driving in cold weather a breeze (no holding in the clutch for five minutes while the motor warms up).
The hard shifting you are experiencing is caused by slight wear in the valve body in the transmission. It doesnt mean your tranny is bad though. This hard shift will only usually occur when the transmission temp reaches 93 degrees. So you could rebuild the valve body or sometimes a tranny flush is a temp fix.
Try changing the transmission fluid and transmission fluid filter. It is a fairly easy but kind of messy job. Just buy the new fluid and filter, Grab your metric socket set and go at it. NEVER WORK UNDERNEATH A HOT VEHICLE. You have to pull the transmission pan to do this job. When you break the gasket seal several quarts (liters) of transmission fluid will cascade down on you. Be ready for it. Don't forget that when it stops draining there is still a lot of fluid left in the pan. When you finish cleaning up the fluid clean the gunk out of the pan. Install the new filter and reinstall the pan with a new gasket. Do not over torque the pan or filter bolts. If you strip them out or break them off you will need professional help to repair it. Refill the transmission with fluid. It should take six or seven liters.