Reviewed By john b (potomac, IL) Reviewed for a 2005 GMC Envoy —3/31/2016 11:37 AM
It brings the 5.3 alive sound wise and gas mileage has improved alittle bit
Reviewed By Joe G (Wilmington, CA) Reviewed for a 2003 GMC Envoy —6/20/2014 10:20 AM
Great product, super fast delivery and exactly as promised. Made my 11 year old GMC Envoy come back to life. A little pricey but no quarrels with the quality. Great transaction.