1998 Chevy Malibu whats this codes means

Possible tranny need to be rebuilt
check with your local tranny shop for pricing
or check used auto part s

P0711 is a TFT sensor circuit failure. P1810 is a TFP switch circuit failure. You should first inspect the connections at the 20 way connector on the transmission. If ok, check the connection at the TFP switch inside the transmission.

I'm Sorry but let me explain. I do not think anythign is wrong with the switch or the sensor. I think they are erroring correct because I am trying to figure out what is wrong with the car. It keeps giving me these codes and right now the car will run just fine but after awhile after running the car stops shifting gears. Any reasons why? Does this mean the transmision is bad? Or is it something more simple? Thanks

I'm Sorry but let me explain. I do not think anythign is wrong with the switch or the sensor. I think they are erroring correct because I am trying to figure out what is wrong with the car. It keeps giving me these codes and right now the car will run just fine but after awhile after running the car stops shifting gears. Any reasons why? Does this mean the transmision is bad? Or is it something more simple? Thanks

We had the same issue last week, drive it for an hour running and shifting OK
and all of sudden delay shifting check engine light on same codes
after all checked OK
we had to drop the tranny and replaced the valve body and solenoid
so far good