File In Section: - Service Bulletin Bulletin No.: PI0090E .

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SB-10038345-1648File in Section:Bulletin No.:Service BulletinDate:PI0090EFebruary, 2012PRELIMINARY INFORMATIONSubject:Intermittent Engine Hesitation or Flutter Without DTC (Inspect and Correct CamshaftPosition Sensor - Bank 1 Exhaust or Camshaft Position Sensor - Bank 1 IntakeHarness Connector Terminals for Intermittent Conditions and Poor Connections)Models:2004-2006 Buick Rendezvous2008-2012 Buick Enclave2010-2012 Buick LaCrosse2004-2012 Cadillac CTS, SRX2006-2012 Cadillac STS2008-2012 Chevrolet Equinox2009-2012 Chevrolet Malibu, Traverse2010-2012 Chevrolet Camaro2012 Chevrolet Captiva Sport, Caprice PPV, Impala2007-2012 GMC Acadia2010-2012 GMC Terrain2007-2009 Pontiac G62008-2009 Pontiac G8, Torrent2007-2010 Saturn OUTLOOK2008-2009 Saturn AURA2008-2010 Saturn VUEEquipped with 6 Cylinder Engine RPO LAU, LF1, LFW, LFX, LLT, LP1 or LY7This PI is being revised to add the engine RPO LFX, the 2004-2006 Buick Rendezvous, the2012 Chevrolet Caprice PPV, Captiva Sport and Impala to the Application Table, and updatethe Application Table and Warranty Information. Please discard PI0090D.The following diagnosis might be helpful if the vehicle exhibits the symptoms described in this PI.Condition/ConcernSome customers may comment on an intermittent engine hesitation or flutter.This condition may be caused by intermittent conditions and poor connections at the terminals in the harnessconnector for the Camshaft Position Sensor - Bank 1 Exhaust or Camshaft Position Sensor - Bank 1 Intake.Recommendation/InstructionsApplication Table to Determine Which Camshaft Position Sensor - Bank 1 HarnessConnector to InspectCamshaft Position Sensor Bank 1 Connector toInspectModelModel YearEngine RPO andDisplacementBuick Enclave2008LY7-3.6LCamshaft Position Sensor Bank 1 ExhaustBuick Enclave2009-2011LLT-3.6LCamshaft Position Sensor Bank 1 IntakeBuick Enclave2012LLT-3.6LCamshaft Position Sensor Bank 1 Exhaust

Application Table to Determine Which Camshaft Position Sensor - Bank 1 HarnessConnector to Inspect (cont'd)Camshaft Position Sensor Bank 1 Connector toInspectModelModel YearEngine RPO andDisplacementBuick LaCrosse2010LF1-3.0LCamshaft Position Sensor Bank 1 ExhaustBuick LaCrosse2010-2011LLT-3.6LCamshaft Position Sensor Bank 1 IntakeBuick LaCrosse2012LFX-3.6LCamshaft Position Sensor Bank 1 ExhaustBuick Rendezvous2004-2006LY7-3.6LCamshaft Position Sensor Bank 1 IntakeCadillac CTS2004LY7-3.6L2005-2007LP1-2.8LLY7-3.6LCadillac CTS2008-2009LP1-2.8LLLT-3.6LLY7-3.6LCadillac CTS2010-2011LLT-3.6LCadillac CTS2010-2011LF1-3.0LCadillac CTS2012LFW-3.0LLFX-3.6LCadillac SRX2004-2009LY7-3.6LCadillac SRX2010-2011LAU-2.8LCamshaft Position Sensor Bank 1 IntakeCadillac SRX2010-2011LF1-3.0LCamshaft Position Sensor Bank 1 ExhaustCadillac SRX2012LFX-3.6LCamshaft Position Sensor Bank 1 ExhaustCadillac STS2006-2007LY7-3.6LCadillac STS2008-2009LLT-3.6LLY7-3.6LCadillac CTSCamshaft Position Sensor Bank 1 IntakeCamshaft Position Sensor Bank 1 ExhaustCamshaft Position Sensor Bank 1 IntakeCadillac STS2010-2011LLT-3.6LChevrolet Camaro2010-2011LLT-3.6LChevrolet Camaro2012LFX-3.6LChevrolet Captiva Sport2012LFW-3.0LChevrolet Caprice PPV2012LFX-3.6LChevrolet Equinox2008-2009LY7-3.6LChevrolet Equinox20102011-2012LF1-3.0LLFW-3.0LChevrolet Impala2012LFX-3.6LChevrolet Malibu2008-2012LY7-3.6LChevrolet Traverse2009-2011LLT-3.6LCamshaft Position Sensor Bank 1 IntakeChevrolet Traverse2012LLT-3.6LCamshaft Position Sensor Bank 1 ExhaustGMC Acadia2007-2008LY7-3.6LCamshaft Position Sensor Bank 1 ExhaustGMC Acadia2009-2011LLT-3.6LCamshaft Position Sensor Bank 1 IntakeGMC Acadia2012LLT-3.6LCamshaft Position Sensor Bank 1 ExhaustCamshaft Position Sensor Bank 1 ExhaustCamshaft Position Sensor Bank 1 IntakeCamshaft Position Sensor Bank 1 Exhaust

Application Table to Determine Which Camshaft Position Sensor - Bank 1 HarnessConnector to Inspect (cont'd)ModelModel YearEngine RPO andDisplacementGMC Terrain20102011-2012LF1-3.0LLFW-3.0LPontiac G62007-2009LY7-3.6LPontiac G82008-2009LY7-3.6LPontiac Torrent2008-2009LY7-3.6LCamshaft Position Sensor Bank 1 Connector toInspectCamshaft Position Sensor Bank 1 ExhaustCamshaft Position Sensor Bank 1 IntakeSaturn AURA2008-2009LY7-3.6LSaturn OUTLOOK2007-2008LY7-3.6LCamshaft Position Sensor Bank 1 ExhaustSaturn OUTLOOK2009-2010LLT-3.6LCamshaft Position Sensor Bank 1 IntakeSaturn VUE2008-2010LY7-3.6LCamshaft Position Sensor Bank 1 ExhaustImportant: This procedure is the same for the camshaft position sensor - bank 1 exhaust or camshaft positionsensor - bank 1 intake.Note: Depending on the model and model year of the vehicle, the camshaft position (CMP) sensor in the GeneralMotors Service Information may be identified by slightly different name variations.1. Review the Application Table in order to determine which camshaft position sensor - bank 1 harness connectorto inspect.2. Turn ON the ignition with the engine OFF.3. Perform the Diagnostic System Check - Vehicle. If DTCs are set, refer to Diagnostic Trouble Code (DTC) List – Vehicle in SI.4. Turn OFF the ignition.2429201Note: Perform this visual inspection BEFORE disconnecting the affected camshaft position sensor - bank 1harness connector.5. Visually inspect the camshaft position sensor harness connector for backed-out terminals as shown. Any ofthese circuits can contribute to this condition. Refer to Testing for Intermittent Conditions and Poor connectionsin SI. If intermittent conditions or poor connections are found, repair as needed. Refer to SI. After completing therepair, proceed to Step 6. If intermittent conditions or poor connections are not found, proceed to Step 6.6. Disconnect the camshaft position sensor harness connector.

24293457. Visually inspect the camshaft position sensor harness connector for damaged or backed-out terminals asshown. Any of these circuits can contribute to this condition. Refer to Testing for Intermittent Conditions andPoor connections in SI. If intermittent conditions or poor connections are found, repair as needed. Refer to SI. After completing therepair, proceed to Step 8. If intermittent conditions or poor connections are not found, proceed to Step 8.8. Remove the camshaft position sensor. Refer to SI.9. Inspect for any foreign material, such as metal shavings in the magnet area of the camshaft position sensor andon the reluctor wheel. If any contamination is found, clean or replace the camshaft position sensor as needed.10. Install the camshaft position sensor.TightenTighten the bolt to 10 Y (89 lb in).11. Connect the camshaft position sensor harness connector.12. Clear any DTCs that may be present.13. Perform the diagnostic repair verification after completing this procedure. Refer to Diagnostic Repair Verificationin SI.Warranty InformationFor vehicles repaired under warranty, use:LaborOperationDescription(MY 2004-2009)N6608Labor TimeEmissionsSystemWiring and/orConnectorRepair orReplacement

ptionLabor TimeN6650(MY SensorReplacement- Bank 1(Right - Bank 1(Right Side)Intake

2008-2012 Chevrolet Equinox 2009-2012 Chevrolet Malibu, Traverse 2010-2012 Chevrolet Camaro 2012 Chevrolet Captiva Sport, Caprice PPV, Impala 2007-2012 GMC Acadia 2010-2012 GMC Terrain 2007-2009 Pontiac G6 2008-2009 Pontiac G8, Torrent 2007-2010 Saturn OUTLOOK 2008-2009 Saturn AURA 2008-2010 Saturn VUE

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