Reviewed By C L (Lake Worth, FL) Reviewed for a 2017 GMC Sierra —4/26/2018 6:21 AM
I have a 2017 GMC Sierra 1500 Crew Cab SLT with the 6.2L and 8 speed tranny. The drone from my Flowmaster 40 series muffler was unbearable at highway speeds when it dropped to 4 cylinders. This product fixed the drone now that I have all 8 cylinders working all the time. The blue LED light is nice and subtle at night.