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 MANUALSCHEVROLET2006SUBURBAN C2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 952 (IMMOBILIZER SYSTEM)VISUAL IDENTIFICATIONIMMOBILIZER CONNECTORSHOOD AJAR SWITCH (AP3/AP8)
2006 Chevrolet Suburban C2500, 6.0 U
Hood Ajar Switch (AP3/AP8)
2006 Chevrolet Suburban C2500, 6.0 USECTION Hood Ajar Switch (AP3/AP8)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Hood Ajar Switch (AP3/AP8) Connector Parts Information
Connector Part Information
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Terminal Part Information
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Hood Ajar Switch (AP3/AP8) Connector Terminal Identification
| Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
| A | PK/BK | 109 | Hood Ajar Switch Signal |
| B | PU | 5531 | Hood Closed Switch Signal |
| C | BK | 250 | Ground |
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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.