Does my 1990 chevy k2500 have a t350 transmission or 700r4?

Transfer case is bad. My first guess. If the transmission were bad it wouldn't move at any position. Is there any noise? You have 4 possibilities, Front and rear differentials, transfer case, and the transmission.

Overdrive is a function of the torque converter. When you put the transmission in the vehicle you should have change the seals and rings on the shaft. The transmission fluid travels through that. Also check the linkages and the connections.

Check to make sure you have power down to the transmission. A wiring diagram will be extremely helpful.

i could poll and instol one for u

Hi.
Good question as many stall are about 3000+ RPM. GM used many different speeds and the one associated with your particular truck is associated with your VIN NUMBER. SO -
Take down the VIN # - go to the DEALER = [ much friendlier in person] - ask them which transmission you have AND - what is the STALL SPEED.

Good Luck

Gary @ Fix Ya

sounds like you have got a pluged fuel filter, should be in the line somewhere along the body

Unless you want to do a lot of work i would find another 4l80E or rebuild yours. 700r4 is not electronic shift and you have no connection for the shift cable. And if you get a electronic 700r4 (4L60E) The plugs are completely different and you would need to change the whole engine harness and ecm.

No there are different 700R4 transmission, well that not quite true. The 700R4 had many jobs to matted to Corvettes to SUVs, the internals are where the differences were in the 700R4 such as the servo's and boost valve which can be easily replaced. Best thing to do is to got to a Transmission shop that can build a transmissions for your Corvette or buy a replacement 700R4 for your year of Corvette. That is why the shift points and firmness are different in a Corvette then a Cadillac while they both have 700R4 in the 1990's. Be bad for a Corvette to shift like Grandma's Cadillac going to play dingo. Good luck and hope this helps.

Yes it is a 700R4. They went to a 4L60E in 1993. Good Luck

bad electrical conections on trany