LCWRGS HVAC Blend Door Actuator for Chevy GMC C/K1500 2500 3500 (1995–1999) — Direct-Fit, Updated Electronics

If your vehicle's vents blow the wrong temperature, make odd noises, or fail to switch airflow between floor and dash, the blend door actuator is often the cause. This LCWRGS unit (part numbers 604-107, 604107, 16124932, 16177412) is built to match the original equipment's form and function for a long list of GM cars and trucks from the late 1980s through the early 2000s.

How does this actuator restore cabin temperature control?

The actuator moves the HVAC blend door that mixes hot and cold air, letting your vents reach the desired temperature. Replacing a worn or failed actuator returns precise position control so the system responds correctly to your temperature and mode settings.

• Direct replacement for listed OEM part numbers for reliable fit.
• High-tech circuit board and durable plastic housing to reduce electrical failures.
• Restores proper motorized movement of the blend door for accurate temperature output.

Which vehicles will this part fit and how do I confirm compatibility?

This LCWRGS blend door actuator covers many GM models; check fit by matching part numbers and vehicle year/model. Common fitments include late-1990s Chevrolet and GMC full-size trucks and SUVs plus several GM sedans listed by the manufacturer.

• Fits 1995–1999 GMC C1500, K1500, Yukon and 1995–1999 Chevy C/K1500, 2500, 3500.
• Also compatible with select Buick, Oldsmobile, Pontiac and Chevrolet sedans and coupes from 1988–2004 (verify part number against your OEM label).
• Compare existing actuator part number (604-107, 16124932, 16177412, etc.) before purchase to ensure exact fit.

What should I expect during installation and reset?

Installation is designed to be straightforward and generally requires common hand tools; specialty mechanics are not usually needed. After mounting, many vehicles require an HVAC recalibration or a simple key-cycle to allow the actuator to find closed and open positions.

• Typical install time: 20–60 minutes depending on vehicle access and experience.
• Use basic tools—screwdrivers and socket set—and follow vehicle-specific removal steps for panels or glovebox as required.
• Recalibrate your HVAC controls per vehicle manual or cycle ignition to let the system set limits.

What are the build features and durability expectations?

LCWRGS builds this actuator with a sturdy plastic housing and updated internal electronics to reduce common failure modes like stripped gears or burned circuits. While no aftermarket part can promise infinite life, this design aims for dependable operation under normal driving conditions.

• Solid plastic exterior resists moisture and road vibration.
• Improved internal circuit board reduces electrical burnout risk.
• Supplied as a single unit—plug-and-play replacement for the original actuator.

Who is this for? This replacement blend door actuator is intended for owners and DIY mechanics of older GM vehicles—particularly 1995–1999 Chevy and GMC full‑size trucks and SUVs—who need a cost-effective, direct-fit fix for HVAC temperature or mode control problems. If your vents are stuck on one temperature, produce unusual sounds when changing settings, or the system won’t alternate vent modes properly, this LCWRGS part is a practical repair option. Always confirm compatibility by checking your vehicle year, model and existing actuator part number before purchase.