GM Blend Door Actuator Gear Rebuild Kit Blend door actuator rebuild kit includes: 1 new gear and tube of plastic safe synthetic lubricating grease Corrects incorrect climate control function and or clicking sound to restore correct A/C and heat functionality on most GM vehicles from 1990-2016 (DOES NOT FIT IMPALA) Longer lasting, less expensive solution than buying an aftermarket actuator Avoid low quality aftermarket actuators  rebuild and retain the genuine GM electronics Made in USA - Lifetime warranty