Passing cable Problems?

you have a 1500 that the shifter moves to drive and vehicle doesnt or shifter doesnt move and stuck in park or shifter moves into gear and shifts but not move so which is it since you have given us three different problems in the mean time check fluid and level in tranny as well as the trans cable under vehicle usually rust out

1. Verify the exhaust system is not plugged. Check for less than 1.5 PSI backpressure at 2,000 RPM in park, or open the exhaust before the converter.

2. Check the Manifold Absolute Pressure Sensor (MAP) for 4.8-5.0 volts Key On Engine Off (KOEO) and about 1 volts at idle.

3. Check actual engine vacuum at idle at 2000 RPM.

4. Unplug the Mass Air Flow (MAF) sensor, reset fuel trim to 0%, and road test. ALSO CHECK FOR FAULT CODES IN THE OBD SYSTEM.

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pull the shifter try to free it if not trans. shop my 89 ford diesel got stuck in 2nd cost me $860.

I would consider changing the vehicle speed sensor. When they go bad, they can really throw out a lot of bad data to the computer, resulting in unexpected behavior like you're experiencing. They're only around $20-$25. I hope this helps! :)

gay

my 07 Tc does this also not sure why, but it helps me brake, could be that it is coming out of passing gear, and going back to last gear

There is a cable that connects the transmission to the throttle boday on the engine. It hooks up to the same place as the gas pedal. Make sure this cable is moving freely. Its is called a detent cable or better known as the passing gear cable. If it is getting stuck or it is to tight it will hold the car in first gear til you reach a high RPM.

Check cable from throttle linkage to transmission that operates throttle valve on transmission. Not uncommon for the linkage at transmission to be pulled all the way when gas pedal pushed for quick acceleration, or passing, and stay stuck there. Engine off, wheels blocked for safety and/or park brake on, have someone depress gas pedal all the way to the floor slowly, while you watch linkage that cable is attached to on transmission. Then as they release pedal, it should move back in opposite direction. Spray it well, with WD-40 or similar lube and get it moving by hand if necessary to make sure it is fully returning. That may be all it is.

I'm a big chevy fan and the reason it wont shift is because of the big tires.What happens when you put big tires on it and still have the same gear ratio the tires slow down the speed alot.There for making the trans seem its still going slower.The only real adjustments you can do here are first adjust the kick down cable if it has one,Next would be change the gear ratio to compinsate for the big tires.But if you have the elctronic trans theres really nothing you can do to adjust the kick down.But if it does this cable controls how the truck shifts on where the gas pedal is.To adjust the kick down cable you need to look at the cables that go up to the throttle likage.the cable thats on the bottom is the one you need.Next behind the bracket that holds the cable is a metal tab its actually in the cable.Push that tab in and the center part of the cable which looks like a con push that all the way in release the tab.Next jump in the truck and press the gas pedal to the floor now its adjusted.Thats all you can do..Hope this helps you and have a great day..

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one unit that operates ratio changes and is connected to the engine is that vacuum operated actuator on the transmission
it is possible that that unit is failing , vacuum hose is leaking and that will cause ratio changes as the vacuum varies
run the fault codes to check for wiring problems or VSS or TCM problems as well