What is your speedometer doing. Does it start out at 0. Somtimes it can fluctuate indicating a bad sensor. Did it just start this after the repairs? Also what what it doing when taken in for repairs?
Transmission and car out of zink. Could be transmission computer has gone bad have system checked for codes. Might need a transmission rebuild.
Best Manuals I honestly suggest you to not waste money on repairs. They're never satisfying and mechanics don't keep you in the loop very much. Try manuals and doing it yourself, you'll know better, and can also judge better.
SOURCE: 1988 Chevy Suburban transmission
bad design flaw with the transmission kick down cable make sure you are in OD first but if you are then this cable is adjustable it is next to the throttle cable and tells the trans when to downshift only adjust very little increments as this can easily blow your tanni as you may already know this feeling
SOURCE: Is it TPS or Trans
If your truck is equiped with one, have the transmisson torque converter relay switch checked.
SOURCE: 4L60E Shifts fine in 1st, 2nd, & 3rd but will not shift into OD
The EMC detected and problem so it's in limp mode, As long as it's in limp mode the 4th and OD will not activate. Take care not to burn up the transmission by running it hard while your in the limp mode.
Your going to have to get the truck scanned to clear any codes and why there are DTC codes. Auto Zone scan for free and most auto shops charge $10.00 to $20.00 to scan sine they want the business.
If you want to clear the codes your self you can put the ignition to the run position and pull the ECM (Batt) fuse out for 20 sec and place it back in then start the truck. It may stall but let it, just start it again and this would have cleared all the DTC code history.
The transmission should be running fine unless there is a problem and the service engine light will be on again and you'll be in limp mode still with an updated DTC in the ECM.
Good luck and hope this helps.
SOURCE: i have a 94 silverado with a 4l60e trans. 1st and
how it sounds that the solenoids are going bad i would take it back to the shop were you had it rebuilt and have them redo it most shops give a one year warranty on the rebuilds if so they should be able to fix it for free.
SOURCE: 2005 chevy silverado 1500, service 4 wheel drive, gears
Sounds like a bent fork in the transfer case. It is a common problem with your truck. The transfer case is a np236. If it just recently started doing this, the rebuild will cost around $800. If the 4wd has been acting up for a while, the planetary will probably need changed, which is another $200.
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