Instruments - Oil Pressure Light Flickers at Idle

TECHNICAL

Bulletin No.: 09-06-04-020A

Date: September 25, 2009

Subject: Oil Pressure Light Flickers at Idle (Check Oil Pressure/Replace Oil Pressure Sensor)

Models:
2005-2008 Chevrolet Aveo
2006-2008 Pontiac Wave (Canada Only)
All Equipped with 1.6L Engine (VIN 6 - RPO L91)

Supercede:
This bulletin is being revised to update the Parts Information. Please discard Corporate Bulletin Number 09-06-04-020 (Section 06 - Engine).

Condition

Some customers may experience a flickering oil pressure light at hot idle. Upon further investigation, the technician may find that increasing the engine RPM slightly will turn the light off.

Correction

Important
DO NOT replace the oil pump, rod/main bearing or engine for this concern.

1. Verify the customer's concern.





2. Locate the oil pressure gage sensor (1) on the back side of the engine/passenger side of the vehicle.
3. Remove the oil pressure gage sensor.
4. Install a mechanical gauge in the engine in place of the oil pressure gage sensor. Refer to Oil Pressure Diagnosis and Testing in SI.
5. Start the engine and let it idle. Verify that the oil pressure is above 5 psi (30 kPa) at hot idle in gear. If the mechanical gauge reads 5 psi (30 kPa) or greater, install a new sensor, GM P/N 96494264.
If the oil pressure is below 5 psi (30 kPa) at hot idle, refer to SI for low oil pressure diagnosis.

Installing New Engine Oil Pressure Gage Sensor
1. Remove the mechanical gauge.
2. Install the new oil pressure switch, P/N 96494264.
3. Clean the engine oil pressure connector. Make sure it is clean of oil and debris.
4. Before installing the connector, place a small amount of dielectric silicone grease, GM P/N 12345579 (in Canada, use P/N 10953481) or equivalent, to the new connector. Connect the new connector into the oil pressure switch.

Parts Information





Warranty Information





For vehicles repaired under warranty, use the table.





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