Read the Chevy High-Performance tech article on How to Program an OBD-II Powertrain Control Module.

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 ...

Some units of the Chevy Silverado 1500, Tahoe, and Suburban trucks and SUVs need an ECM software update to fix a glitch with the check engine light.