Clicking/Ticking Sound/Noise Heard During Cold Start – Sound/Noise Decreases, But Continues As Engine Warms – 2007-2009 Chevrolet Pontiac Saturn Opel Daewoo

#06-06-93-001G:CLICKING/TICKING SOUND/NOISE HEARD DURING COLD START – SOUND/NOISE DECREASES, BUT CONTINUES AS ENGINE WARMS-NORMAL OPERATION OF HIGH PRESSURE FUEL PUMP AND INJECTORS (APR 4, 2011)

Subject: Clicking/Ticking Sound/Noise Heard During Cold Start – Sound/Noise Decreases, But Continues As Engine Warms – Normal Operation of High Pressure Fuel Pump and Injectors
Models: 2008-2009 Chevrolet Cobalt SS, HHR SS
2007-2009 Pontiac Solstice
2007-2009 Saturn SKY
2007-2009 Opel GT
2007-2008 Daewoo G2X
Equipped with 2.0L Turbocharged Engine RPO LNF

This bulletin is being revised to remove the 2010 Chevrolet Equinox, GMC Terrain and the 2.4L engine RPO LAF. Please discard Corporate Bulletin Number 06-06-93-001F (Section 06 – Engine/Propulsion System).


Do This Don’t Do This
Inform the customer that this is normal operation of the high pressure fuel pump and injectors. DO NOT replace the high pressure fuel pump and or injectors.

The 2.0L turbocharged engine uses a direct injection fuel system that operates at very high fuel pressures.

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