# Service bulletin PIP4786C A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned. - Type: Service bulletin - NHTSA id: 10083080 - Published by NHTSA: 2016\-10\-20 - Manufacturer's number: PIP4786C - Manufacturer's date: 2016\-08\-15 - NHTSA component: ENGINE AND ENGINE COOLING ## NHTSA's summary THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES THAT MAY HAVE LOW OIL PRESSURE MESSAGE. TECHNICIAN MAY ALSO FIND A DIAGNOSTIC TROUBLE CODE P0521 IN THE ENGINE CONTROL MODULE. TECHNICIAN SHOULD FOLLOW ALL PUBLISHED SERVICE INFORMATION DIAGNOSIS. WHEN USING A SCAN TOOL IF THE OIL PRESSURE IS LOW BUT THE OIL PRESSURE AT THE OIL FILTER HOUSING IS CORRECT, TECHNICIAN SHOULD INSPECT THE VALVE LIFTER OIL FILTER FOR DEBRIS/SLUDGE THAT COULD BE RESTRICTING OIL FLOW TO THE OIL PRESSURE SENSOR. TECHNICIAN SHOULD REMOVE THE VALVE LIFTER OIL FILTER AND CLEAN IT. IF THE VALVE LIFTER OIL FILTER CANNOT BE CLEANED REPLACE IT. ## The document No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number. ## Components Engine ## Trouble codes named P0521 ## Vehicles listed - 2006 to 2009 BUICK ALLURE - 2016 BUICK CASCADA - 2005 BUICK CENTURY - 2008 to 2016 BUICK ENCLAVE - 2013 to 2016 BUICK ENCORE - 2016 BUICK ENVISION - 2005 to 2016 BUICK LACROSSE - 2005 BUICK LESABRE - 2006 BUICK LESABRE - 2013 BUICK LESABRE - 2006 to 2011 BUICK LUCERNE - 2012 BUICK LUCERNE - 2005 BUICK PARK AVENUE - 2005 to 2007 BUICK RAINIER - 2005 BUICK REGAL - 2008 to 2010 BUICK REGAL - 2011 to 2015 BUICK REGAL - 2005 to 2007 BUICK RENDEZVOUS - 2005 to 2007 BUICK TERRAZA - 2008 BUICK TERRAZA - 2012 to 2015 BUICK VERANO - 2013 to 2016 CADILLAC ATS - 2015 to 2016 CADILLAC ATS\-V - 2013 to 2015 CADILLAC CT6 - 2016 CADILLAC CT6 - 2005 to 2016 CADILLAC CTS - 2005 to 2007 CADILLAC CTS\-V - 2015 to 2016 CADILLAC CTS\-V - 2005 CADILLAC DEVILLE - 2005 CADILLAC DTS - 2006 to 2011 CADILLAC DTS - 2012 CADILLAC DTS - 2014 to 2016 CADILLAC ELR - 2005 to 2016 CADILLAC ESCALADE - 2005 to 2016 CADILLAC ESCALADE ESV - 2007 to 2013 CADILLAC ESCALADE EXT - 2005 to 2011 CADILLAC ESCALADE EXT 1500 - 2008 to 2012 CADILLAC ESCALADE HYBRID - 2014 CADILLAC ESCALADE HYBRID - 2005 to 2016 CADILLAC SRX - 2005 to 2011 CADILLAC STS - 2005 to 2009 CADILLAC XLR - 2013 to 2016 CADILLAC XT5 - 2013 to 2016 CADILLAC XTS - 2005 CHEVROLET ASTRO - 2007 to 2011 CHEVROLET AVALANCHE - 2005 to 2013 CHEVROLET AVALANCHE 1500 - 2005 to 2007 CHEVROLET AVALANCHE 2500 - 2013 CHEVROLET AVALANCHE 2500 - 2005 to 2011 CHEVROLET AVEO - 2013 CHEVROLET AVEO - 2005 CHEVROLET BLAZER - 2006 to 2009 CHEVROLET BLAZER - 2005 to 2009 CHEVROLET C4500 - 2008 CHEVROLET C4500 NA - 2005 to 2008 CHEVROLET C5500 - 2005 to 2009 CHEVROLET C6500 - 2005 to 2009 CHEVROLET C7500 - 2008 CHEVROLET C7500NA - 2005 to 2009 CHEVROLET C8500 - 2010 to 2016 CHEVROLET CAMARO - 2011 to 2016 CHEVROLET CAPRICE - 2012 to 2016 CHEVROLET CAPRICE POLICE PURSUIT - 2008 CHEVROLET CAPTIVA - 2011 to 2015 CHEVROLET CAPTIVA - 2009 CHEVROLET CAPTIVA SPORT - 2012 CHEVROLET CAPTIVA SPORT - 2005 CHEVROLET CAVALIER - 2014 to 2016 CHEVROLET CHEVEROLET SS - 2015 to 2016 CHEVROLET CITY EXPRESS - 2005 CHEVROLET CLASSIC - 2005 to 2010 CHEVROLET COBALT - 2011 CHEVROLET COBALT - 2008 to 2010 CHEVROLET COBALT SS - 2005 to 2012 CHEVROLET COLORADO - 2013 CHEVROLET COLORADO - 2015 to 2016 CHEVROLET COLORADO - 2005 to 2016 CHEVROLET CORVETTE - 2005 to 2008 CHEVROLET CORVETTE Z06 - 2009 CHEVROLET CORVETTE ZR1 - 2010 to 2016 CHEVROLET CRUZE - 2005 to 2006 CHEVROLET DENALI - 2005 CHEVROLET EPICA - 2005 to 2016 CHEVROLET EQUINOX - 2005 to 2016 CHEVROLET EXPRESS - 2005 to 2012 CHEVROLET EXPRESS 1500 - 2014 CHEVROLET EXPRESS 1500 - 2005 to 2011 CHEVROLET EXPRESS 2500 - 2014 CHEVROLET EXPRESS 2500 - 2005 to 2010 CHEVROLET EXPRESS 3500 - 2012 CHEVROLET EXPRESS 3500 - 2014 CHEVROLET EXPRESS 3500 - 2009 CHEVROLET EXPRESS 4500 - 2012 CHEVROLET EXPRESS 4500 - 2016 CHEVROLET EXPRESS 4500 - 2006 to 2008 CHEVROLET EXPRESS CUTAWAY VAN - 2005 to 2006 CHEVROLET F SERIES - 2005 to 2008 CHEVROLET G VAN BUS - 2010 to 2011 CHEVROLET G VAN BUS - 2005 to 2008 CHEVROLET G1500 - 2005 CHEVROLET G2500 - 2005 CHEVROLET G3500 - 2008 CHEVROLET G3500 - 2006 to 2011 CHEVROLET HHR - 2005 to 2016 CHEVROLET IMPALA - 2006 CHEVROLET IMPALA \(GMX 211\) - 2005 CHEVROLET INCOMPLETE/CUTAWAY C3 - 2016 CHEVROLET LOW CAB FORWARD 3500 - 2016 CHEVROLET LOW CAB FORWARD 4500 - 2016 CHEVROLET LOW CAB FORWARD 5500 - 2008 CHEVROLET LUMINA - 2014 CHEVROLET LUMINA - 2005 to 2016 CHEVROLET MALIBU - 2005 CHEVROLET MALIBU CLASSIC - 2007 CHEVROLET MALIBU CLASSIC - 2013 to 2014 CHEVROLET MALIBU ECO - 2008 to 2010 CHEVROLET MALIBU HYBRID - 2016 CHEVROLET MALIBU HYBRID - 2005 to 2007 CHEVROLET MALIBU MAXX - 2005 to 2007 CHEVROLET MONTE CARLO - 2008 CHEVROLET MONTE CARLO - 2010 CHEVROLET MONTE CARLO - 2005 to 2007 CHEVROLET OPTRA - 2016 CHEVROLET OPTRA - 2012 to 2015 CHEVROLET ORLANDO - 2005 CHEVROLET S/T BLAZER - 2005 to 2007 CHEVROLET S10 - 2005 to 2016 CHEVROLET SILVERADO 1500 - 2005 CHEVROLET SILVERADO 1500 HD - 2005 to 2016 CHEVROLET SILVERADO 2500 - 2005 to 2016 CHEVROLET SILVERADO 3500 - 2011 CHEVROLET SONIC - 2012 to 2016 CHEVROLET SONIC - 2013 to 2016 CHEVROLET SPARK - 2014 to 2016 CHEVROLET SPARK EV - 2005 to 2006 CHEVROLET SSR - 2007 CHEVROLET SSR - 2005 to 2016 CHEVROLET SUBURBAN - 2005 to 2011 CHEVROLET SUBURBAN 1500 - 2005 to 2006 CHEVROLET SUBURBAN 2500 - 2008 to 2011 CHEVROLET SUBURBAN 2500 - 2005 to 2009 CHEVROLET T6500 - 2005 to 2009 CHEVROLET T7500 - 2005 to 2009 CHEVROLET T8500 - 2005 to 2016 CHEVROLET TAHOE - 2008 to 2012 CHEVROLET TAHOE HYBRID - 2015 to 2016 CHEVROLET TAHOE POLICE PURSUIT - 2005 to 2009 CHEVROLET TRAILBLAZER - 2013 to 2014 CHEVROLET TRAILBLAZER - 2005 to 2009 CHEVROLET TRAILBLAZER 360 - 2006 CHEVROLET TRAILBLAZER EXT - 2005 to 2006 CHEVROLET TRAILBLAZER EXT 370 - 2005 CHEVROLET TRANS SPORT - 2008 CHEVROLET TRAVERSE - 2009 to 2016 CHEVROLET TRAVERSE - 2013 to 2016 CHEVROLET TRAX - 2005 to 2009 CHEVROLET UPLANDER - 2005 CHEVROLET VENTURE - 2011 to 2016 CHEVROLET VOLT - 2006 to 2007 CHEVROLET W SERIES C3 3500 - 2005 to 2011 CHEVROLET W\-SERIES - 2005 to 2010 CHEVROLET W3500 - 2005 to 2010 CHEVROLET W4500 - 2005 to 2010 CHEVROLET W5500 - 2007 to 2016 GMC ACADIA - 2005 to 2009 GMC C4500 - 2005 to 2009 GMC C5500 - 2005 to 2009 GMC C6500 - 2005 to 2009 GMC C7500 - 2005 to 2009 GMC C8500 - 2005 to 2013 GMC CANYON - 2015 to 2016 GMC CANYON - 2005 to 2009 GMC ENVOY - 2010 to 2013 GMC ENVOY - 2005 to 2009 GMC ENVOY 360 - 2006 to 2007 GMC ENVOY DENALI - 2006 GMC ENVOY DENALI XL - 2006 GMC ENVOY XL - 2005 to 2006 GMC ENVOY XL 370 - 2005 GMC ENVOY XUV - 2009 GMC EXPRESS - 2005 to 2006 GMC F SERIES - 2006 to 2011 GMC G VAN BUS - 2005 to 2008 GMC G1500 - 2005 GMC G2500 - 2005 GMC G3500 - 2005 GMC JIMMY CLASSIC - 2005 GMC SAFARI - 2005 GMC SAFARI \(GMC\) - 2010 GMC SANANA - 2005 to 2016 GMC SAVANA - 2005 to 2016 GMC SAVANA 1500 - 2005 to 2016 GMC SAVANA 2500 - 2005 to 2011 GMC SAVANA 3500 - 2013 to 2016 GMC SAVANA 3500 - 2005 to 2016 GMC SIERRA 1500 - 2005 GMC SIERRA 1500 HD - 2005 to 2016 GMC SIERRA 2500 - 2005 to 2016 GMC SIERRA 3500 - 2005 to 2006 GMC SONOMA ## Recalls for the same vehicles and component - [16V868000](/recalls/nhtsa/16V868000.md), 2016-12-02: ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN - [2014577](/recalls/tc/2014577.md), 2014-12-18: Engine - [14V007000](/recalls/nhtsa/14V007000.md), 2014-01-13: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM - [06V289000](/recalls/nhtsa/06V289000.md), 2006-08-03: ENGINE AND ENGINE COOLING ## Other bulletins for the same vehicles and component - [00\-06\-01\-026R](/bulletins/11026017.md), 2025-12-03, Service bulletin: ENGINE. This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage. - [23\-NA\-153](/bulletins/11024485.md), 2025-10-25, Service bulletin: ENGINE. The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay. - [22\-NA\-080](/bulletins/11024330.md), 2025-10-16, Service bulletin: ENGINE. This technical bulletin provides a procedure to replace the camshaft actuator magnet to correct customer concerns of engine related shudder. - [15\-NA\-010](/bulletins/11020254.md), 2025-07-07, Service bulletin: ENGINE. This service bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California smog inspection or smog inspection in other states. - [18\-NA\-069](/bulletins/11017876.md), 2025-05-06, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM; ENGINE. This service bulletin provides a service procedure to correct conditions of Poor Engine Performance in Extremely cold weather conditions, CAC Icing, MIL Illuminated with DTCs set. - [25\-NA\-052](/bulletins/11017263.md), 2025-04-28, Service bulletin: ENGINE. This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to oil in system. - [25\-NA\-052](/bulletins/11016942.md), 2025-04-10, Service bulletin: ENGINE. This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to oil in system. - [16\-NA\-003](/bulletins/11014575.md), 2025-02-28, Service bulletin: ENGINE. This service bulletin provides repair information to correct a customer concern of a chirp, squeak noise heard coming from the rear of vehicle. - [22\-NA\-074](/bulletins/11014233.md), 2025-02-12, Service bulletin: ENGINE. This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large amounts of debris has flowed throughout the oiling system. - [21\-NA\-043](/bulletins/11014230.md), 2025-02-12, Service bulletin: VISIBILITY/WIPER; SERVICE BRAKES; ENGINE; ELECTRICAL SYSTEM; WHEELS. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold \(prepping\) to the customer. JSON: [/v1/bulletins/10083080](/v1/bulletins/10083080) [Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20PIP4786C&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10083080&vehicle=Service%20bulletin%20PIP4786C)