Loose gear shift lever 1989 chevy 2500 pickup

SOURCE: 92 Chevy pickup 2x4 auto transmission shifting abruptly from 1st to 2nd gear

There are several causes for harsh shifting. If you have a vacuum modulator on the right side of the transmission make sure it isn't leaking. (see if any trans fluid is inside by turning it so the nipple for the vacuum hose is pointed down and tap on it) You can also have a broken accumulator spring...some are accessed from outside the case, some are not. An improperly adjusted "kickdown" cable can also cause this. Anything else is internal and would be related to a sticking valve in valve body or pressure loss at an internal shaft seal. You will need a manual for a breakdown of your specific unit to locate these items.

SOURCE: transmission on my 2000 chevy k2500 4x4 pickup

your transmission has possibly been rebuilt with stronger springs put in. No worries. have been running mine for along while without any problems. Better this than slipping, but it is a bit annoying.

SOURCE: 1997 chevy k1500 pickup-transmission shifting problems

check the fluid level in the transmission, also change the transmission fluid and filter

SOURCE: 1998 chevy lumina, shifter on steering column,won't shift

Either the pin that connects rod to tranny is broken off, or there is internal transmission problems.

SOURCE: 2006 2500 chevy pickup, reduced engine power,seems

DO A LITTLE TUNE UP.CHANGE FUEL FILTER * AIR FILTER * SPARK PLUG * WIRES *CLEAN FUEL INJECTORS.CHECK TRANSMISSION FLUID.MOST TIME YOU RUN AC IN CAR YOUR ENGINE HAS TO BE WELL TUNED.BECAUSE THE AC WILL TAKE SOME POWER FROM ENGINE.