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 K2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 850 (IMMOBILIZER SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESSCAN TOOL OUTPUT CONTROLS
2006 Chevrolet Suburban K2500, 6.0 U
Scan Tool Output Controls
2006 Chevrolet Suburban K2500, 6.0 USECTION Scan Tool Output Controls
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Scan Tool Output Controls
| Scan Tool Output Control | Additional Menu Selection(s) | Description |
|---|---|---|
| Daytime Running Lamps | Light Test | The BCM actuates the DRL relay when you select ON. The headlamps should illuminate until commanded OFF. |
| Horn Relay | Miscellaneous Test | The BCM actuates the horn relay for 5 seconds when you select ON. The horn should sound for 5 seconds. |
| Passlock Power | Output Control | The BCM turns the Passlock power control ON or OFF as commanded by the scan tool. |
| Security Lamp | Miscellaneous Test | The BCM actuates the security LED when you select ON. The security LED should illuminate until commanded OFF. |
RENDER: 1.0x
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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.