Buick TCM (Buick Transmission Control Module)

Cascada
Century
Enclave
Encore
Encore GX
Envision
LaCrosse
LeSabre
Lucerne
Park Avenue
Rainier
Regal
Regal Sportback
Regal TourX
Rendezvous
Riviera
Roadmaster
Skylark
Terraza
Verano