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Universal Air HV1211C HVAC Heater Control Valve
| Brand | Universal Air HV1211C |
|---|---|
| Product line | Heater Valve Vacuum |
| Fits | Chevrolet, GMC, and Isuzu · 24 vehicles |
Vacuum-operated valve. Controls heater flow with simple vacuum actuation.
Heater control valve. Regulates coolant flow for precise temperature control.
HVAC component. Built for temperature control systems.
Heater Valve Vacuum for GM SUV HVAC Control
Universal Air HV1211C is a heater valve vacuum component for HVAC temperature control systems. It is used on select Chevrolet, GMC, and Isuzu SUVs to help regulate heater coolant flow through the climate control circuit.
Key Features
- HVAC heater control valve for vacuum-operated temperature control
- Direct fit application for select GM SUVs
- Supports heater coolant flow management in the climate system
- Brand line: Universal Air Heater Valve Vacuum
- Part number: HV1211C
Detailed Description
Universal Air HV1211C is a heater valve vacuum part for temperature control service on select vehicles. It is listed for 2002-2006 Chevrolet Trailblazer, 2002-2006 GMC Envoy, 2003-2006 Isuzu Ascender, 2003-2005 Chevrolet Trailblazer EXT, 2003-2004 GMC Envoy XL, and 2004 GMC Envoy XUV. If you are searching for a heater valve vacuum for a 2002-2006 Chevrolet Trailblazer or a 2002-2006 GMC Envoy, HV1211C matches the listed applications.
Common Issues This Part May Address
- Heater output stuck on hot or cold
- Vacuum-controlled heater valve not responding
- Uneven cabin temperature control
- Loss of coolant flow control through the heater circuit
- Climate control performance problems on GM SUV HVAC systems
Installation Notes and Tips
Verify the vehicle year, make, model, and HVAC configuration before ordering. Inspect vacuum lines, hose routing, and surrounding heater components during replacement so the new valve can operate correctly. Confirm the part number HV1211C against the original component before installation.
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2006 | Chevrolet | Trailblazer | LS | 4.2L | L6 | N/A | Heater Valve Vacuum |
| 2006 | Chevrolet | Trailblazer | LS | 5.3L | V8 | N/A | Heater Valve Vacuum |
| 2006 | Chevrolet | Trailblazer | LT | 4.2L | L6 | N/A | Heater Valve Vacuum |
| 2006 | Chevrolet | Trailblazer | LT | 5.3L | V8 | N/A | Heater Valve Vacuum |
| 2006 | GMC | Envoy | — | — | — | N/A | Heater Valve Vacuum |
| 2006 | Isuzu | Ascender | — | — | — | N/A | Heater Valve Vacuum |
| 2005 | Chevrolet | Trailblazer | LS | — | — | N/A | Heater Valve Vacuum |
| 2005 | Chevrolet | Trailblazer | LT | — | — | N/A | Heater Valve Vacuum |
| 2005 | Chevrolet | Trailblazer EXT | — | 5.3L | V8 | N/A | Heater Valve Vacuum |
| 2005 | GMC | Envoy | — | — | — | N/A | Heater Valve Vacuum |
| 2005 | Isuzu | Ascender | — | — | — | N/A | Heater Valve Vacuum |
| 2004 | Chevrolet | Trailblazer | — | — | — | N/A | Heater Valve Vacuum |
| 2004 | Chevrolet | Trailblazer EXT | — | 5.3L | V8 | N/A | Heater Valve Vacuum |
| 2004 | GMC | Envoy | — | — | — | N/A | Heater Valve Vacuum |
| 2004 | GMC | Envoy XL | — | 5.3L | V8 | N/A | Heater Valve Vacuum |
| 2004 | GMC | Envoy XUV | — | 5.3L | V8 | N/A | Heater Valve Vacuum |
| 2004 | Isuzu | Ascender | — | — | — | N/A | Heater Valve Vacuum |
| 2003 | Chevrolet | Trailblazer | — | — | — | N/A | Heater Valve Vacuum |
| 2003 | Chevrolet | Trailblazer EXT | — | 5.3L | V8 | N/A | Heater Valve Vacuum |
| 2003 | GMC | Envoy | — | — | — | N/A | Heater Valve Vacuum |
| 2003 | GMC | Envoy XL | — | 5.3L | V8 | N/A | Heater Valve Vacuum |
| 2003 | Isuzu | Ascender | — | — | — | N/A | Heater Valve Vacuum |
| 2002 | Chevrolet | Trailblazer | — | — | — | N/A | Heater Valve Vacuum |
| 2002 | GMC | Envoy | — | — | — | N/A | Heater Valve Vacuum |
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