GPM has teamed up Thieman, Tommy Gate, Palfinger and Maxon. Together we distribute and install a full-line of hydraulic liftgates for light, medium, and heavy-duty trucks and trailers. Toplifters, Stowaways, Railgates, Sideloaders, and Conventional models are all part of line-up. For many years GPM has been customizing liftgates to meet specific needs. From 1000lb to 6600 lb lifting capabilities, GPM can provide a liftgate for almost every application.