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.
Idle Air Control (IAC) Valve
2001 Chevrolet Suburban C1500SECTION Idle Air Control (IAC) Valve
WARNING: This page is about a different car, the 2001 GMC Sierra and 2001 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Idle Air Control (IAC) Valve
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | LT GRN /BLK | 444 | IAC Coil B Low Control |
| B | LT GRN /WHT | 1749 | IAC Coil B High Control |
| C | LT BLU /BLK | 1748 | IAC Coil A Low Control |
| D | LT BLU /WHT | 1747 | IAC Coil A High Control |
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.