HIMARKLIF HVAC Blend Door Temperature Valve Actuator for Chevrolet/GMC/Cadillac 5‑Pin Driver Side, OE Fit for 2014–2020 Models

HIMARKLIF HVAC blend door temperature valve actuator (driver side, 5-pin) replaces GM part numbers 22808876 / 15-74347 / 604-706 for select Chevrolet, GMC and Cadillac models.

This replacement temperature actuator is the driver-side component that controls the HVAC blend door responsible for mixing hot and cold air on the driver’s side. It’s designed to match the fit and electrical interface of the original equipment for compatible vehicles so you can restore proper dual-zone temperature control without expensive dealer service. The unit is intended for the main actuator location near the upper left corner of the passenger glove box on the air conditioning evaporator and only fits the 5-pin connector configuration.

How do I know this actuator fits my vehicle?

Confirm fitment by matching model years and the part numbers listed with your vehicle’s existing actuator. This HIMARKLIF actuator fits specific Chevrolet, GMC and Cadillac full-size trucks and SUVs built in the model ranges provided. Also verify the connector style—this part is for the 5-pin driver-side temperature valve actuator only.

• Compatible Chevrolet: Silverado 1500 (2014–2018), Silverado 2500/3500 HD (2015–2019), Tahoe (2015–2020), Suburban (2015–2020)
• Compatible GMC: Sierra 1500 (2014–2018), Sierra 2500/3500 HD (2015–2019), Yukon (2015–2020)
• Compatible Cadillac: Escalade and Escalade ESV (2015–2020)
• Replaces factory numbers: 22808876, 15-74347, 604-706

What problems does a failing blend door actuator cause?

A worn or faulty temperature actuator will prevent the HVAC system from blending hot and cold air properly on the driver side, causing inconsistent cabin temperatures. Typical symptoms include one side blowing only hot air while the other blows only cold, clicking noises behind the dash, or unresponsive temperature adjustments for the driver zone.

• Driver-side temperature stuck hot or cold
• Audible clicking or grinding from behind glove box
• Unresponsive dual-zone temperature control

How difficult is installation and what should I expect?

Installation is a moderate DIY task for someone comfortable working behind the glove box and handling small electrical connectors. You’ll typically remove the glove box or lower dash cover, unplug the 5-pin connector, unfasten the old actuator, swap in the HIMARKLIF unit, and verify operation through the vehicle’s HVAC controls.

• No special tools beyond basic hand tools required
• Access from upper left of passenger glove box near evaporator
• Test the actuator by cycling temperature controls after installation

What makes this HIMARKLIF actuator a reliable replacement?

This actuator is manufactured to match OEM electrical and mounting interfaces to ensure correct fit and function for compatible GM vehicles. The part focuses on reproducing the movement and feedback the original unit provided so blend door positioning is accurate and repeatable after installation.

• Engineered for OEM-style fit and 5-pin electrical compatibility
• Designed specifically for driver-side temperature control (not the mode selector)
• Direct replacement for listed GM part numbers to simplify sourcing

Who is this for: Drivers or technicians who own a compatible Chevrolet, GMC or Cadillac truck/SUV experiencing uneven or incorrect driver-side HVAC temperatures and who want a direct-fit, cost-effective replacement part. It’s intended for those able to perform basic dash access and connector swaps or for shops seeking a dependable aftermarket substitute for GM part numbers 22808876, 15-74347, and 604-706.