Restore proper HVAC control with the Dorman - OE Solutions HVAC Blend Door Actuator 604-130, a direct-fit replacement for the auxiliary position. It installs on the 2002-2006 Chevrolet TrailBlazer EXT, 2002-2006 GMC Envoy XL, and 2003-2008 Isuzu Ascender — see the Buyer's Guide tab for engine-level fitment. This small electric motor drives the blend door inside the HVAC case, positioning it to regulate temperature and airflow; if a failed actuator is the cause of a stuck or inaccurate blend door, this replaces it.
- Direct replacement: engineered to drop in like the original air door actuator on the listed applications.
- Position specific: vehicles often use several HVAC door actuators for different locations and functions — review the application notes to confirm this matches the auxiliary actuator you need to replace.
- Durable construction: designed and tested to strict standards to help resist wear and electrical burnout for reliable operation.
- Trustworthy quality: backed by a team of experts and engineers in the United States.
If you're unsure which actuator position your vehicle needs, consult a qualified service technician.
Interchange: 15-72811
1572811 · APBDA0006 · APBDA0015 · ADS122 · F04026 · ADA205 · 73017 · 88892975 · DA1067 · SK604130 · ADR122
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this blend door actuator do?
It's a small electric motor that drives the HVAC blend door, positioning it to regulate temperature and airflow inside the heating and cooling system.
Which position does the 604-130 replace?
It's the auxiliary position actuator. Because vehicles use several HVAC door actuators, review the application notes to confirm it matches the one you need to replace.
Will this fit my vehicle?
It's a direct-fit replacement for the 2002-2006 Chevrolet TrailBlazer EXT, 2002-2006 GMC Envoy XL, and 2003-2008 Isuzu Ascender. Check the Buyer's Guide tab for full details.
What are signs this actuator may need replacing?
Common signs include inconsistent air temperature, a blend door that seems stuck, or clicking noises from the HVAC case. Diagnose the cause before replacing.
Which brands and numbers does this part interchange with?
It cross-references 15-72811, APBDA0006, APBDA0015, ADS122, F04026, ADA205, 73017, 88892975, DA1067, SK604130, and ADR122.
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