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.
2000 Chevrolet Express 3/4 Ton Van V8-305 5.0L VIN M SFIFACTORY OEM SERVICE PROCEDURE
Weak Vacuum Test
PASS/NOT RUN/FAIL:
The Weak Vacuum Test will run only if the Loaded Canister Test does not pass. Insufficient vacuum in the evaporative system will cause this test to fail. The two states of this parameter are Pass and Not Run/Fail.
The Weak Vacuum Test will run only if the Loaded Canister Test does not pass. Insufficient vacuum in the evaporative system will cause this test to fail. The two states of this parameter are Pass and Not Run/Fail.
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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