2011 Chevrolet Silverado 2500 HD Spark Plugs

Genuine GM spark plugs for the 2011 Chevrolet Silverado 2500 HD, at wholesale prices. Heat range and gap are specified per engine, and GM has revised plug part numbers mid-generation on several engines. GMT900 HD through 2014, K2XX HD from 2015 to 2019, and the T1XX HD from 2020.

Symptoms to look for

Misfires under load, rough idle, or a drop in fuel economy. On a heavy duty pickup, cab configuration, drivetrain and box length all split this group, so the badge on the tailgate is not enough to order from.

What sets these apart

• No hassle returns. If the spark plugs is not right, send it back.
• Warranty intact. OEM spark plugs keep coverage that an aftermarket part can void.
• Wholesale pricing. Most spark plugs numbers land well below dealer list.
• No aftermarket substitutes. These are GM spark plugs, not OE-style equivalents.

Ordering correctly

A part validated on this vehicle behaves differently from one validated across a range of vehicles. Fitment questions are the one thing worth a phone call before checkout rather than after delivery. We ship from Dallas, which keeps transit times short across most of the country.