I have just started having problems with 4L60E tranny. Yesterday would not lock into park...Today all positions on shifter is reverse, yet if I put it in park we can push the car forward. Has anyone encountered this, and how do we fix it?
Check to see if your shift cable is stretched or broken, also look on the transmission itself to make sure that the lever where the cable attaches to is not bent. also you can check under the shifter itself and make sure the linkage there is all ok. it sounds like your shifter cable is the cause for your problem.
if the cable is ok and you can see the shift lever move on the transmission than the next likely cause would be the valve body in the transmission.
to add to the solution. you can also pop take the transmission oil pan off and visually check to see if the linkages inside are working properly, be carefull not to get debris in the valve body. also you can try popping the shift cable off the transmission lever and moving it by hand to see if it will go into all gears that way. make sure someone is in the car holding the brake on. it is best to try this with the car jacked up that way it won't move on you.
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That was the problem...Husband beat on the car to clear the plugs and snapped the cable in two. Cleared the engine though :)
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