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.
2004 Cadillac Escalade EXTFACTORY OEM SERVICE PROCEDURE
HVAC, Automatic DTCS
HVAC - AUTOMATIC DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC B0159 | Outside Air Temperature Sensor Circuit Range/Performance |
| DTC B0164 | Passenger Compartment Temperature Sensor Circuit Range/Performance |
| DTC B0169 | Auxiliary Inside Air Temperature Sensor Circuit |
| DTC B0174, B0179, B0510, or B0515 | Discharge Air Temperature Sensor Circuit |
| DTC B0183 or B0188 | Sunload Sensor Circuit |
| DTC B0229, B0414, B0424, or B3770 | HVAC Door Actuator Range/Performance |
| DTC B0263, B0268, B0408, or B0418 | HVAC Door Actuator Circuit |
| DTC B0429 or B3531 | HVAC Door Actuator Circuit |
| DTC B0434 or B3764 | Auxiliary HVAC Door Actuator Range/Performance |
| DTC B1375 | Device Ignition 3 Circuit |
| DTC B3579 or B3584 | Auxiliary Air Temperature Sensor Circuit Range/Performance |
| DTC P0530 | Air Conditioning (A/C) Refrigerant Pressure Sensor Circuit |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.