We tweak the ECU on this 2009 Chevy Cobalt SS and get some pretty impressive horsepower gain! Only at www.gmhightechperformance.com, the official site for GM High-Tech Performance Magazine.

Some units of the GMC Sierra 1500, Yukon, and Yukon XL trucks and SUVs need an ECM software update to fix a glitch with the check engine light.

GM president Mark Reuss has commented on a recent report that the ECU of the C8-generation Corvette will be virtually ‘untunable.’ The new Corvette will use the car manufacturer’s Global B ...