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 MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1088 (INSTRUMENT PANEL SYSTEM DISPLAYS, GAUGES AND CONSOLE)DIAGNOSTIC INFORMATION AND PROCEDURESSCAN TOOL OUTPUT CONTROLS
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Scan Tool Output Controls
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Scan Tool Output Controls
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. 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 |
|---|---|---|
| Coolant Gage Sweep Test | Special Functions: IPC Gages | The IPC commands this gage to sweep to its maximum when you select UP. Then the gage is commanded to sweep to its minimum when you select DOWN. |
| Fuel Gage Sweep Test | Special Functions: IPC Gages | The IPC commands this gage to sweep to its maximum when you select UP. Then the gage is commanded to sweep to its minimum when you select DOWN. |
| Lamp Test | Special Functions: Lamp Test | The IPC illuminates the following indicators when you select On:
The indicators should illuminate until commanded Off. The IPC Tech 2 display will also change the states of Ignition 0, the DIC Reset switch, the DIC Mode switch, and the Trip Odometer Reset switch. |
| Speed Gage Sweep Test | Special Functions: IPC Gages | The IPC commands this gage to sweep to its maximum when you select UP. Then the gage is commanded to sweep to its minimum when you select DOWN. |
| Tach Gage Sweep Test | Special Functions: IPC Gages | The IPC commands this gage to sweep to its maximum when you select UP. Then the gage is commanded to sweep to its minimum when you select DOWN. |
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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.