Impala V6-3.4L VIN E (2000)
Oil Level Warning Indicator: Description and Operation
Engine Oil Level Switch
The PCM monitors the engine oil level switch signal at start-up to determine if the engine oil is OK. If the PCM determines that a low oil level condition
exists, the PCM will communicate the information over the Class II circuit to the P cluster and it will illuminate the indicator lamp or initiate a message.
The low oil level message may not appear if other messages are being commanded, such as the rear deck lid, driver or passenger doors ajar. Ensure that
all doors and compartment lids are completely closed.