2011 GMC Sierra 1500 Catalytic Converters

Genuine GM catalytic converters for the 2011 GMC Sierra 1500, at wholesale prices. Converters are emissions parts, and the substrate loading has to match what the ECM expects from the downstream oxygen sensor. GMT900 through 2013, K2XX from 2014 to 2018, and the T1XX from 2019 with the CarbonPro bed option.

Symptoms to look for

A P0420 code, rattling from underneath, or a failed emissions test. On a light duty pickup, cab configuration, drivetrain and box length all split this group, so the badge on the tailgate is not enough to order from.

Why order factory

• We catch the wrong part before you do. VIN verification is free on every catalytic converters order.
• Fast out the door. In stock catalytic converters ship within hours, not days, from Dallas.
• No hassle returns. If the catalytic converters is not right, send it back.
• Warranty intact. OEM catalytic converters keep coverage that an aftermarket part can void.
• Wholesale pricing. Most catalytic converters numbers land well below dealer list.

Ordering correctly

Materials and coatings are specified, not approximated, which is why factory parts last through more heat cycles. Check the VIN before ordering anything that has to bolt to something else. Shipping is calculated on real weight and distance, which usually beats a padded flat rate.