GM has issued a service update for 2024 Chevy Silverado HD trucks with a fix for a glitch causing incomplete emissions data being provided during testing.

GM has issued a fix for the 2024 GMC Sierra HD to correct a glitch in the Electronic Control Module that can lead to incorrect data during emissions testing.

We show you how easy it is to convert a Gen III engine to a carb with the MSD LS6 Ignition-Control Box.

An ignition module replaces the regular spark plugs, and there's a power module to control it, but otherwise the only other modifications are in software, as the engine requires remapping to take ...