riviera 99 power seat problem
 

drivers side power seat does not move. fuses ok. power to the lumbar but that does not move. passenger seat moves ok.

dealer thinks it's the module seat memory or the seat motor and says to replace the module first. any thoughts?

Power seat problems on Buicks are rare. Will check and see what I can come up with that might help.

Does your vehicle have heated seats? I believe the module is used with heated seats only.
From the info I have , it is recommended to check all power and ground connections first.
Then check the switch itself.
They show a circuit breaker (25 Amp) in the instrument panel fuse block for the seats but if the RH seat works the C/B is OK.
Was this any help? ,,,,,,,,,,,hanky