General Motors' 8-speed automatic transmission is known for presenting a few common issues. Here's what you need to know ...

The 8-spd transmission in Mike's 2019 Silverado hit 45k miles, demanding a pricey flush. The bill? $562. That steep cost has ...

The Hydra-Matic 8L90 (production code M5U) is a fuel-saving and electronically controlled eight-speed automatic transmission developed and produced by General Motors for use in rear- and rear-biased ...

Some recent units of the GMC Sierra, GMC Canyon, and GMC Savana trucks and vans need a new transmission reaction carrier due to a risk of cracking.

Originally developed for the 2015 Corvette Z06, GM’s Hydra-Matic 8L90 eight-speed auto trickled to the normal 2015 Corvette and the 2015 Cadillac Escalade. Designed to be mated exclusively to the 6.2 ...

When Tadge Juechter and the rest of the Corvette team were tasked with building the C7 Z06 Corvette, the best factory Corvette ever, they had to engineer a car that could be wielded on a track with ...

Last month GM officially announced it would offer an eight-speed transmission with the 6.2-liter EcoTec3 V-8 engine on the 2015 Chevrolet Silverado 1500, GMC Sierra 1500 and several full-size SUVs.

But rest assured it is coming...Almost no matter how awesome a new product is that GM releases, we ask "what's next" almost immediately. When Chevrolet unveiled the 2015 Corvette Z06, everyone ...

Also sold as the GMC Savana, the Chevrolet Express full-size van has been with us since 1995. Facelifted for the 2003 model year, the Express is as old as dirt, but it continues to serve General ...