OKAY MOTOR Secondary Air Pump for Chevrolet Colorado GMC Canyon Hummer H3 Smog Air Pump for Chevrolet Colorado Hummer H3 GMC Canyon 2.9L 3.7L 5.3L Part #: 15928252, 12610063, 7.22621.22, 7.28056.15 New Aftermarket Replacement Unit. 180-days Manufacturer Type Warranty Limited. Applications: Chevrolet Colorado 2.9 3.7; GMC Canyon 2.9 3.7; Hummer H3;