Inrecent years, independent research has helped clear up many myths within the Pontiac hobby. One area, however, that still remains shrouded in mystery is the midyear emissions system change that ...

In the past two months we've covered most of the emission systems that have appeared on recent automobiles. This month we'll conclude our discussion of these systems with those devices designed to ...

A purge valve is a vital component of a vehicle's evaporative emission control (EVAP) system. Its function is to control the flow of fuel vapors from the fuel tank and evaporative canister into the ...

A tuning company in Roseville, California will pay $1 million in fines and penalties after it pleaded guilty to selling thousands of products that allowed pickup truck owners to bypass the emissions ...

Ram will recall more than 600,000 heavy-duty pickup trucks to reprogram their emissions-control systems after it was discovered that the trucks contain software that allowed them to emit more than the ...

POCATELLO – Diesel performance parts retailers GDP Tuning LLC and Custom Auto of Rexburg LLC, doing business as Gorilla Performance, and owner Barry Pierce were sentenced today in federal court in ...

EXETER, Pa. — Keystone Automotive will pay a $2.5 million penalty for allegedly selling aftermarket devices that were designed to defeat the emissions control systems on cars and trucks. The vehicle ...

A new proposal would allow enforcement of the Clean Truck Check regulation for California-based vehicles but would disapprove of the reg for out-of-state vehicles.