A-NAFTULY HVAC Blend Door Actuator Replacement for 1999–2002 GM Trucks & SUVs — Direct-Fit, Upgraded ABS

The A-NAFTULY 604-113 HVAC blend door actuator is a direct-fit replacement that restores correct air temperature and vent direction in compatible 1999–2002 Chevrolet, GMC and Cadillac trucks and SUVs.

If your vehicle’s vents blow the wrong temperature, make unexpected noises when changing modes, or fail to shift airflow between dash, floor and defrost, the blend door actuator is often the source. This A-NAFTULY unit (also referenced as 52473356, 604113, 15-72505 and GM0613055) is engineered to match OE fit and function for multiple Silverado, Sierra, Suburban, Tahoe, Yukon and Escalade models from 1999 through 2002. Constructed with upgraded ABS housing and modern internal circuitry, it’s built to resist wear and electrical failure while providing a straightforward replacement option for DIYers and professional shops alike.

Which vehicles will this blend door actuator fit?

This actuator is designed for many late-1990s to early-2000s GM full-size trucks and SUVs. Always verify your exact year, make and model before purchasing to ensure compatibility.

• 1999–2002 Chevrolet Silverado 1500 and 2500; 2001–2002 Silverado 1500HD/2500HD; 2001–2002 Silverado 3500
• 2000–2002 Chevrolet Suburban 1500/2500 and 2000–2002 Tahoe (excludes 2000 Tahoe V8 5.7L)
• 1999–2002 GMC Sierra 1500/2500; 2001–2002 Sierra 1500HD/2500HD/3500; 2000–2002 Yukon and Yukon XL
• 2002 Chevy Avalanche 1500/2500 and 2002 Cadillac Escalade / Escalade EXT

How does this replacement compare to the original part?

The A-NAFTULY actuator mirrors the original equipment’s mounting points and electrical interface so it drops into the existing location without extensive modification. It uses improved materials and updated circuit components to reduce common failure modes like motor burnout and gear wear.

• Direct-replacement part numbers: 604-113, 52473356, 604113, 15-72505, 73003, GM0613055
• Upgraded ABS housing for strength and heat resistance
• High-tech internal circuit board to improve reliability

Can I install this myself, and what should I do after installation?

Yes—the actuator is designed for single-person installation in most cases. Basic hand tools and light mechanical experience are usually sufficient. After fitting the actuator you should recalibrate the HVAC system per the vehicle service manual to ensure correct position sensing and smooth operation.

• Typical installation: remove dash access panel, unbolt old actuator, swap wiring harness and mounts, bolt in new unit
• Required step: recalibrate HVAC control to synchronize actuator travel
• Comes with a brief installation guide and 18-month warranty for support

What symptoms indicate the blend door actuator needs replacement?

Several common signs point to a failing actuator, including inconsistent cabin temperature, inability to switch vent modes, or clicking/grinding noises from the dash. Replacing a faulty actuator restores proper air routing and temperature blending between driver and passenger zones.

• Persistent clicking or grinding from behind the dashboard during mode changes
• Vent output stays stuck on one mode or won’t change temperature properly
• Uneven temperatures between left and right sides of the cabin

Who is this for: Owners and technicians servicing 1999–2002 Chevrolet, GMC and Cadillac full-size trucks and SUVs who need an affordable, OE-like replacement for a faulty HVAC blend or mode actuator. This part suits do-it-yourself mechanics who want a drop-in swap with improved internal components, and fleet/service shops seeking a dependable spare to resolve temperature control and venting complaints quickly. Confirm vehicle compatibility before ordering and perform HVAC recalibration after installation for best results.