First off, even if a car’s not “worth much” the cost of a replacement car can be a lot!
If you can "TLC" an older car and get 2 more years, that's a plus!!
So the book value of a car is not something I think about, rather the cost to get another
car that can be avoided! Lol
Clutch pack wear is like No 99 reason for hard shifts. There so many more common problems
for hard shifts that will cause damage that are all centered around a cheapen-out
valve body parts.
Shift kits in the #1 / #2 shift accumulators work great, easily done with the oil pan off.
New oil filter a good bet too.
1 or 2 cans of Seafoam Trans Tune before you pour in new ATF.
Disconnect the car battery for 30 minutes to reset the computer, you likely have a P1811 code
in the TCM. A P1811 forces the line oil pressure so high it’ll damage other things like jamming
the torque converter lockup clutch to ‘on’ and stay there, you’ll have to tear everything out
and replace the torque converter!
Finally be very sure the tranny fluid level is right. If it’s at the lower limit it can start
shifting badly even after all this work. Drive for 5-6 miles, then check level while hot, idling
and in park on level ground. Mine has to be at the top mark on the dip stick. Checking dipstick
level after only idling the engine til the engine is ‘hot’ is not the same as a ‘hot’ tranny!
Good items to read:
HOW GM DEALERS AVOID TRANSMISSION REPAIRShttps://app.box.com/s/rjmdo7p32jtv630a5i7qzaozzr9o98oq
GM 4T65-E COMMON TRANSMISSION PROBLEMShttps://app.box.com/s/n3eaao2pzopusd3bx8qrd7xmgaibj3n1
GM 4T65-E TRANSMISSION UPGRADE PARTShttps://app.box.com/s/drsf61akkxu6bw2a2qcnl1ajuhgkh9hx
ALERT: AFTERMARKET TRANSMISSION FILTERShttps://app.box.com/s/sqsa3zk7pshzojavmkg9
AUTOMATIC TRANSMISSION SERVICE - WHAT YOU NEED TO KNOWhttps://app.box.com/s/kwafw6szynq6ma9nk00b