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 MANUALSCHEVROLET2000K TAHOE 4WD V8-5.7L VIN RREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESSCAN TOOL DATA, NORMAL VALUES AND DEFINITIONSSCAN TOOL DATA DEFINITIONS - POWERTRAIN SYSTEMSEXCESS VACUUM TEST
2000 Chevrolet K Tahoe 4WD V8-5.7L VIN R
Excess Vacuum Test
2000 Chevrolet K Tahoe 4WD V8-5.7L VIN RSECTION Excess Vacuum Test
(Pass/Not Run/Fail)
The Excess Vacuum Test will Fail if fuel tank vacuum builds at an excessive rate during normal EVAP canister purge. A restricted vent valve or vent valve hoses will cause improper venting. The scan tool display states for this parameter are Pass and Not Run/Fail.
The Excess Vacuum Test will Fail if fuel tank vacuum builds at an excessive rate during normal EVAP canister purge. A restricted vent valve or vent valve hoses will cause improper venting. The scan tool display states for this parameter are Pass and Not Run/Fail.
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.