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.
Test Description
2002 Chevrolet Monte Carlo LSSECTION Test Description
The numbers below refer to the step numbers in the diagnostic procedures.
- 4
When using the scan tool to increment the EGR valve, increment the valve to 10 percent then to 0 percent. Repeat this process to see if test light turns ON then OFF. If the test light stays ON after commanded to 0 percent, the EGR solenoid high control circuit is shorted to voltage. - 5
This step tests for an open in the ground circuit to the solenoid. - 6
This step tests if voltage is constantly being applied to the solenoid.
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.