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.
2000 GMC EnvoyFACTORY OEM SERVICE PROCEDURE
HVAC DTCS
HVAC DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| B0160 | Ambient Air Temperature Sensor Circuit Low |
| B0161 | Ambient Air Temperature Sensor Circuit High |
| B0165 | Inside Air Temperature Sensor 1 Circuit Low |
| B0166 | Inside Air Temperature Sensor 1 Circuit High |
| B0175 | Output Air Temperature Sensor 1 Circuit Low |
| B0176 | Output Air Temperature Sensor 1 Circuit High |
| B0180 | Output Air Temperature Sensor 2 Circuit Low |
| B0181 | Output Air Temperature Sensor 2 Circuit High |
| B0185 | Sun Load Sensor 1 Circuit Low |
| B0186 | Sun Load Sensor 1 Circuit High |
| B0408 | Temperature Control Circuit 1 Malfunction |
| B0415 | Temperature Control Circuit 1 Low |
| B0416 | Temperature Control Circuit 1 High |
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.