Description: Location-Vapor Canister. Without diesel. Silverado, sierra. 3500. Yukon XL, Suburban. 3/4 ton. 3.5L, sedan. 2.2L. Hummer H2. 3.9L, sedan.

Description: Genuine GM Air Pressure Sensor, part number 12711681. This GM OEM air pressure sensor monitors operating conditions and sends signals to the vehicle's control modules. Made by General Motors to original equipment standards for correct fit, finish and durability—no guesswork with aftermarket parts. Verify fitment using your VIN or GM part number 12711681 before ordering. Shipped from Gateway Buick GMC, an authorized GM dealer.

Description: Genuine GM Heated Oxygen Sensor, part number 12589321. This GM OEM heated oxygen sensor measures oxygen in the exhaust so the engine computer can fine-tune the air-fuel mixture and monitor catalytic converter efficiency. Made by General Motors to original equipment standards for correct fit, finish and durability—no guesswork with aftermarket parts. Verify fitment using your VIN or GM part number 12589321 before ordering. Shipped from Gateway Buick GMC, an authorized GM dealer.

Description: CTS-v. Rear. Coupe, 6.2L. This part requires programming and/or special setup procedures GM Service Information describes the procedures and special tools needed to ensure proper operation in the vehicle Detects oxygen content in the exhaust gases to help optimize emissions This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors