When we first rolled our 2002 Chevy Silverado 2500HD into the bay at PPE Diesel's shop in Montclair, California, we thought for sure the transmission was toast. Interestingly, upon inspection it was ...

When we first rolled our 2002 Chevy Silverado 2500HD into the bay at PPE Diesel's shop in Montclair, California, we thought for sure the transmission was toast. Interestingly, upon inspection it was ...

There are few things in the world of high-performance cars that are truly reliable. One would have to be the GM TH400 automatic. As durable as this three-speed juicebox is, there is still room for ...

No matter how impressive the parts, paint, or power numbers, a Pontiac that can't move under its own power is a lawn ornament. Although having a reputation for being reasonably reliable with the stock ...

The 2013 model year Chevy Traverse is among the vehicles that are most likely to need a full transmission replacement at some point in their lifetime, according to a new study conducted by Consumer ...

GM releases fix for harsh shifts in Chevy Trax and Buick Envista crossovers. Dealers are to replace TEHCM and valve body in 6T40 transmissions.

The General Motors 8L family of transmissions has been in service since 2014, gradually replacing older 6L six-speed units across much of the company's lineup. The bigger 8L90 was the first GM 8-speed ...