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 MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISBRAKESANTILOCK BRAKE SYSTEM WITH TRACTION CONTROL SYSTEM & STABILITY CONTROL SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESSCAN TOOL OUTPUT CONTROLS (W/JL4)
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2
Scan Tool Output Controls (W/JL4)
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Scan Tool Output Controls (W/JL4)
Scan Tool Output Controls (W/JL4)
| Scan Tool Output Control | Additional Menu Selections | Description |
|---|---|---|
| Refer to the scan tool manual for complete scan tool operating instructions. | ||
| ABS Motor | - | This function allows the technician to command the ABS pump motor On and Off. |
| Automated Bleed | - | The electronic brake control module (EBCM) commands each valve solenoid and the pump motor ON and OFF in a special sequence in order to bleed air out of the brake pressure modulator valve (BPMV). Refer to ABS Automated Bleed Procedure (W/JL4) or ABS Automated Bleed Procedure (w/o JL4) for a step-by-step procedure. |
| Left Front Brake Apply | - | The EBCM energizes the appropriate solenoids and the precharge pump motor to apply brake pressure to the left, front wheel. The precharge pump turns off after approximately 2 seconds, but the brake pressure is held for approximately 9 seconds. Refer to Brake Pressure Modulator Valve Hydraulic Testing for a step-by-step procedure. |
| Left Rear Brake Apply | - | The EBCM energizes the appropriate solenoids and the precharge pump motor to apply brake pressure to the left, rear wheel. The precharge pump turns off after approximately 2 seconds, but the brake pressure is held for approximately 9 seconds. Refer to Brake Pressure Modulator Valve Hydraulic Testing for a step-by-step procedure. |
| Pre-charge Bleed | - | The EBCM commands both turbocharger (TC) isolation valve solenoids on and energizes the precharge pump to bleed air from the precharge pump, combination valve and the hydraulic circuitry between these components. Refer to ABS Automated Bleed Procedure (W/JL4) or ABS Automated Bleed Procedure (w/o JL4) for a step-by-step procedure. |
| Request ABS/VSES Info. for SPS | Request Info. | This function allows you to request VIN and EBCM software information to be used when programming the EBCM using service programming system (SPS). |
| Right Front Brake Apply | - | The EBCM energizes the appropriate solenoids and the precharge pump motor to apply brake pressure to the right, front wheel. The precharge pump turns off after approximately 2 seconds, but the brake pressure is held for approximately 9 seconds. Refer to Brake Pressure Modulator Valve Hydraulic Testing for a step-by-step procedure. |
| Right Rear Brake Apply | - | The EBCM energizes the appropriate solenoids and the precharge pump motor to apply brake pressure to the right, rear wheel. The precharge pump turns off after approximately 2 seconds, but the brake pressure is held for approximately 9 seconds. Refer to Brake Pressure Modulator Valve Hydraulic Testing for a step-by-step procedure. |
| Solenoid Tests |
|
This function allows the technician to command a selected dump or isolation valve solenoid On and Off to verify proper operation of the BPMV. Refer to Brake Pressure Modulator Valve Hydraulic Testing for complete procedure instructions. |
| Tire Size Calibration |
|
IMPORTANT:
The Yaw Rate Reference Table Reset Procedure must also be performed if the tire size is changed. Refer to Yaw Rate Reference Table Reset Procedure . This function allows the technician to read the tire size calibration of the EBCM or calibrate the EBCM to the correct tire size. Calibration must be performed when the EBCM is replaced or when different size tires are installed on the vehicle. |
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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.