Reviewed By rod n (MELBOURNE, FL) Reviewed for a 2011 Chevy Avalanche —11/28/2014 12:40 PM
Works good keeping the engine running on all eight cylinders. Eliminated the horrible sound my new Gibson exhaust made when the engine switched from V8 to V4. When U unplug it the engine goes right back to the factory cylinder diactivation. I would highly recommend it. Do not leave it plugged in if U are not going to use your truck everyday as it does draw down the battery . If your check engine should come on simply unplug it & let engine cycle a couple times & the light should go off.