Transmission problem: driving down the road at 72mile an hour. Heard a bang. Pulled over. Checked fluids all good. Drove it home . overdrive lite was on. Said od off. Have no reverse. I put in a governor pressure sensor kit in. Now it wont shift out of 1st. Temp trans lite comes on and o\d off lite. Still have no reverse. HELP

 

Sounds like a new transmission is in order.

 

Find anything interesting in the pan? How did the fluid look?

 

Check for a clogged (ATF) cooling system. Could be a hung anti-drainback check valve, or crud in the radiator/aux cooler.

Bang is a bad thing to hear. Did you also feel it in addition to hearing it?

 

The snap ring holding the od unit together have been known to break.

I'd have to agree. Or at least a tear down to see what the problem is.

 

No i didnt. Fluid was good . changed filter and atf 4 about 4weeks ago

 

Replaced sensors and solenoids. Now lites are off. After driving it. Got to 40 mph. Stalled out. Pulled over. Started it. Drove it. All lites off. BUT 1gear not there. Have 2,3,4 . starts in 2nd ,goes to 3,then 4 .

 

I did and everything looks good. But im not a machanic by profession. It is do it yourself . I am a mother of 8, I am a super sports woman by trade. Meaning hunt,trap,fish for a living. So my truck is important to me.

 

Thought i ran over something . That's how it sounded.

 

I flushed my system