Reviewed By Daniel A (SANTA CLARITA, CA) Reviewed for a 2007 Chevy Silverado —4/22/2015 9:32 AM
GM knows this is a problem yet they have not recalled these engines. I feel I purchased the Range device In time before any major damage was done, I installed it and ran high octane fuel and some injector cleaner and my truck has never ran better. I don't notice a difference in fuel expense. I hope it works for you.