Reviewed By Reginald T (Cheyenne, WY) Reviewed for a 1984 GMC Caballero —4/22/2013 8:24 PM
Fit perfect. Easy install.
Reviewed By Paul D (Rialto, CA) Reviewed for a 1992 GMC C/K 2500 —8/24/2015 8:34 PM
This unit solved my issue in passing the California Smog Test... A 1992 5.7L is as clean as any new car today! (HC= 14/7, CO=0.03/0.02; NO=299/34) WOW! I should have replaced my old Catalytic Converter & O2 Sensor units first and stop worrying about the test results.