Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1123 (HVAC SYSTEMS - AUTOMATIC)DIAGNOSTIC INFORMATION AND PROCEDURESSCAN TOOL OUTPUT CONTROLS
2004 Oldsmobile Bravada AWD
Scan Tool Output Controls
2004 Oldsmobile Bravada AWDSECTION Scan Tool Output Controls
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
HVAC Control Module Scan Tool Output Controls
| Scan Tool Output Control | Additional Menu Selection(s) | Description |
|---|---|---|
| A/C Request | Output Control | The HVAC control module sends out a A/C request signal to turn on the A/C compressor when you select ON. The request signal should stay active until commanded OFF. |
| Blower Motor | Output Control | The HVAC control module commands the blower motor on to maximum speed when you select ON. The HVAC control module commands the blower motor to low speed when you select OFF. |
| Defrost Mode | Miscellaneous Test |
IMPORTANT:
You must exit the Defrost Mode menu to return to normal operating mode. When you select ON, the HVAC control module goes into defrost mode. |
| Heater Mode | Miscellaneous Test |
IMPORTANT:
You must exit the Heater Mode menu to return to normal operating mode. When you select ON, the HVAC control module goes into heater mode. |
| Left Mix Motor | HVAC Motors | The HVAC control module commands the left air temperature actuator towards 198 counts when you select ON. The HVAC control module commands the left air temperature actuator towards 0 counts when commanded OFF. |
| Recirculation Door | HVAC Motors | The HVAC control module commands the air inlet door to the recirculation position when you select ON. The HVAC control module commands the air inlet door to the ambient air position when you select OFF. |
| Right Mix Motor | HVAC Motors | The HVAC control module commands the right air temperature actuator towards 0 counts when you select ON. The HVAC control module commands the right air temperature actuator towards 195 counts when you select OFF. |
| Vent Mode | Miscellaneous Test |
IMPORTANT:
You must exit the Vent Mode menu to return to normal operating mode. When you select ON, the HVAC control module goes into vent mode. |
PCM Scan Tool Output Controls
| Scan Tool Output Control | Additional Menu Selection(s) | Description |
|---|---|---|
| A/C Relay | Engine Output Controls | The PCM energizes the A/C compressor clutch relay when you select ON. The A/C compressor clutch should remain engaged until commanded OFF. |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.