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 MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 8 (ENGINE CONTROL SYSTEM & FUEL SYSTEM - 4.3L - TROUBLESHOOTING & DIAGNOSIS)SERVICE BAY TESTTEST PROCEDURE
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Test Procedure
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Test Procedure
WARNING: This page is about a different variant/trim than selected.
IMPORTANT:
If the Service Bay Test aborts or fails a DTC will NOT be set.
- Install a scan tool.
- Select the Service Bay Test with the scan tool.
- Follow the instructions on the scan tool.
- If the test aborts, correct the condition for running the test and then retest.
- If the test fails, repair the vehicle for the condition indicated by the failure message on the scan tool.
- Verify that the EVAP I/M system status is set to YES.
CAUTION:
Refer to Road Test Caution
.
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.