Replace your transmission solenoid. My truck was doing the exact same thing until I replaced it.

 

How much did it cost for you to get the governor pressure sensor and solenoid replace? Mine has gotten better but it still is having problems. When its cold outside and i start it put it in reverse and try to take off it is like it is in neutral for a sec then it pops into gear same thing forward but only in the mornings when it is cold out. it also has trouble going from 1st gear to second gear, when it gets about 2,100 rpms in first i put it in neutral and put it back in drive and it goes right to second and every gear works just fine its just that first gear now. It also is throwing a code p 1756 which is the governor pressure sensor and solenoid. Ive read some symptoms of it and mine is having those symptoms of not shifting 1st gear to 2nd gear and putting it in neutral at 2,100 rpms and it shifts. This transmission is a rebuild and is under warranty but i don't have the time to take it out and drive it back up to the guy who i got it from and swapping it for another. And he is saying it is something else. I think i'm gonna make him put another sensor and solenoid in it along with the Valvoline atf+4 tyranny fluid i put in it. sense it is kind of his fault.

 

I talked to the guy that worked on it yesterday. Apparently he didn't replace the solenoid and told me to bring it back Tuesday to replace it.

So far I spent $750 on the transmission job.

 

i have a question...i have the same truck but a 5speed transmission and its hard to get into reverse so i wanted to change the oil...ive been told to use atf+4 in it..is that right?

 

The mechanic never showed on Tuesday and when I did talk to him he said he forgot but had been in court all day and told me to bring it back Friday in the AM. Guy comes in over an hour late and said he HAS to get a couple of other jobs done and wanted me to come back at 12 -12:30.
When I got back they didn't start on it until about 2PM. What was suppose to be a "one hour" job was over two hours and the guy doing the work didn't plug the solenoid in. The truck would not shift out of first gear so I turned around and took it back. They took the pan off and plugged it in. Everything appeared fin at first until I passed a car and it again wouldn't shift until it got to high rpms. On my way home last night I began hearing some other noises I haven't heard before. So far it's running worse than before I had it "fixed."
So not only did I work a double Thursday night, drove home just long enough to get a shower and go back to town to WAIT ALL DAY, for something that was only suppose to take an hour to correct and am now worse off than I was before.

 

Damn to hell with that you should take it back and have them warranty it. I think im just gonna keep driving with the one i have in my truck now and just blow it up. And save up for a built racing transmission that's built by a pro it will be expensive but the hell with these ****ty stock transmissions mine is a brand new rebuild that i put in by myself and i don't wanna have to keep pulling and putting one it just for the mechanic to get the rebuild right.

Thanks for telling me about yours now i defiantly wont go that away hah. keep me info on what yours is doing if it gets better or what you do so i can get an idea.

 

I have a 99 b1500 5.9 I started having simelar problems and then it only started out in third. Replaced pcm and is shifting fine now the problem I have is sometimes it wont start I unplug the fuel pump relay and plug back in and it fires right up ????????????

 

Well im having similar problems as the first post. First third and fourth are fine but seco d has to go another grand or higher then i have to let off the gas just for it to shift
. So do i need to invest in a seal kit?

 

The guy told me to bring it by yesterday (Tuesday) on my way to work and he would take me to work, fix it and drop it off at my job. No body was there went I stopped by! Seen him today and he again told me to bring it back Friday.
Anyways I all ready bought some transmission fluid (ATF+4) today, used a hand pump to pump out 4 1/2 quarts and replaced it with the new fluid. The new fluid seemed to help! I couldn't make the truck shift like it had been no matter what. The winding noise I was hearing in reverse decreased a lot but is still there. The winding noise in "drive" was only slightly better.

 

Not better but worse! Broke down on me today going home.