Transmission problem but hope not

ANON POSTED
seems like car has 2 problems
but you never said car runs good
engine starts and runs and stays running,
nor if all gears in the box are good or bad
or if Reverse gear is dead, (means car does not move)
nobody on earth can guess what any car owner can do.
ever. we can tell you what a real shop will do ,never you.
you have no parts,skills,tools ,meters or the service manual
so what can you with empty hands, IDK> shrug.

my guess wild is REVERSE gear is dead, and drive works.
am I guessing right (IDK)
but if you switch the gear shift to R (PRNDL)
and car does not move foot on gas (throttle)
the transmission is failing
only why remains. that takes tools and tests you do not have
or scan the PCM but no scanner in hand. buy /rent barrowed)
the PRNDL switch may show errors
or shift solenoid errors.

or RPM cold is too high 1500RPM cold is par. 800hot.
if too high RPM the car creeps i gear. (first car ever?)
but all drivers put foot on the brake first to shift into gears
or run over the kids, I'm told.

take it to a shop and ask.

If it won't shift to 3rd and stays in second, bad shift solenoid/s. If it shifts and the transmission drops out(high RPM's), the bad clutches in the transmission. Rebuild. Solenoids around $600 to replace. Transmission rebuild around $2200.

Service the transmission for the shifting issue. However going from auto to manual is an electrical switch. Car wont shift till car is at high enough rpm level.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/nathaniel_9ed79ef078a2f164

change your filter are your third gear could be burning up..my need to replace..i hpoe this could be some help..

It winds up in 1st and then shifts right from 1st into 3rd. Then never shifts into 4th. Plus rev is gone. You broke the sun shell. The transmission will need to rebuilt or replaced.

The gears in your transmission are not functioning properly, Check tranny fluid levels, or take it in for a tranny inspection

Had a similar problem with same model pickup but would shift into third only after reaching high RPM in second @5000. There was TSB that came out about this a few years ago. I had to replace the valve body in the transmission to fix the problem and worked perfectly after that. Hope this helps!

this car's Transmission is based off of a vacuum lines leading into it. check to see if all the vacuum lines are all still attached for the transmission and engine. If any are found to be off...find out their proper loaction and see if the problem goes away. if none are found to be off then look into cracks or damage to them.(i would replace ALL of them since those hoses are inexpensive). Then find out when the transmission fluid and filter was changed in your car....since its 18 years old. Hope this helps.

These cars have a lock up torque converter meaning 4 gear going above 35 to 40 MPH, the engine and transmission lock together and turn at the same rate. I know that older GM cars had a plug that needed to be plugged into the transmission for the lock function to work on the torque converter and if you unplugged it the RPM's would run high as you describe. I have never had a 1999 Silhouette and I'm not 100% sure that these cars have that type of plug but it sounds like that type of problem. I agree with you. You know your car and I would take it to a transmission mechanic and describe your problem to them.

Good luck!

Fist thing to do is change the transmission fluid and filter. Audi says the transmissions have lifetime fluid, but that's bull - change it first and see if that helps. If not, have the car scanned by a shop and have the chassis codes looked into. If there's a true electrical control problem, there should be at least one code stored (which may not trip the check-engine light).