PIP5528
Service Bulletin Details
Public Details for: PIP5528
This preliminary information communicates the identification process for high feature v6 camshafts in re-manufactured engines.
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Bulletin No.: PIP5528 Published date: 10/10/2017 Preliminary Information PIP5528 Information assistance for HFV6 re-manufactured engine misfire diagnosis Models Brand: Model: Model Years: VIN: from Engine: to Transmissions: Buick Allure (Canada Only) 2007 - 2016 ALL ALL 3.0 LF1, 3.6 LY7, 3.6 LLT ALL Buick Enclave 2007 - 2017 ALL ALL 3.6 LY7, 3.6 LLT, 3.6 LFY ALL Buick LaCrosse 2007 - 2016 ALL ALL 3.0 LF1, 3.6 LY7, 3.6 LLT ALL Cadillac ATS 2013 - 2015 ALL ALL 3.6 LFX, 3.6 ALL Cadillac CTS 2007 - 2016 ALL ALL 2.8 LP13.0 LF1, 3.0 LFW, 3.6 LY7, 3.6 LLT, 3.6 LFX ALL Cadillac SRX 2007 - 2016 ALL ALL 2.8 LP1, 2.8 LAU, 3.0 LF1, 3.6 LY7, 3.6 LLT, 3.6 LFX ALL Cadillac STS 2007 - 2011 ALL ALL 3.6 LY7, 3, 6 LLT ALL Chevrolet Camaro 2010 - 2015 All All 3.6 LLT, 3.6 LFX All Chevrolet Colorado 2015 - 2016 All All 3.6 LFX All Chevrolet Equinox 2007 - 2017 All All 3.0 LF1, 3.0 LFW, 3.6 LFX All Chevrolet Impala 2012 - 2018 All All 3.6 LFX All Chevrolet Malibu 2007 - 2012 All All 3.6 LY7 All Chevrolet Traverse 2009 - 2017 All All 3.6 LLT All GMC Acadia 2007 - 2017 All All 3.6 LLT All GMC Canyon 2015 - 2016 All All 3.6 LFX All GMC Terrain 2010 - 2016 All All 3.0 LF1, 3.0 LFW, 3.6 LFX All Pontiac G6 2007 - 2009 All All 3.6 LY7 All Pontiac G8 2008 - 2009 All All 3.6 LY7 All Pontiac Torrent 2008 - 2009 All All 3.6 LY7 All Saturn Aura 2007 - 2010 All All 3.6 LY7 All Saturn Outlook 2007 - 2010 All All 3.6 LY7, 3.6 LLT All Saturn Vue 2008 - 2010 All All 3.6 LY7 All Involved Region or Country North America Some dealers may experience a misfire immediately after installing a GM re-manufactured HFV6 engine, Condition usually limited to 1 bank or 1 cylinder. This is usually a rear cylinder (5 or 6) but could be any. Cause This condition could be caused by the wrong camshaft being installed in the engine at the reman facility. Correction: If you experience this concern, inspect the camshafts to ensure the correct camshaft is installed in each intake and exhaust position by comparing the ring strategy to either the engine that was removed(best way), or the charts below for the engine you are working on. If the wrong camshaft is installed either replace the camshaft with the same one from the original engine if undamaged or a new camshaft. Note: It is not necessary to replace the engine for this concern. Please send an email with pictures of the concern as well as the serial number and date off the side of the engine to [email protected] . NOTE: Ring strategy camshaft identification is a series of rings along the camshaft that are either simply cast on the camshaft or machined down. There are 5 rings on each camshaft. Identification occurs by the order in which the machined or cast rings are on the camshaft. See picture below for example. 1=Cast Ring 2= Machined Ring The tables below will help you identify the correct camshafts for your engine. HFV6 Cam Ring strategy C = CAST RING Top of Table is Rear of cam M = MACHINED RING 2007-2011 LY7 (NA,Holden, Suzuki) ( IT drive) RH EXH RH INT LH INT LH EXH Rear of Cam C M C M C C M C C C M C M M C C Front of Cam C C C C 2007 LP1, LY7 HO (IT drive) RH EXH RH INT LH INT LH EXH Rear of Cam M M C C M C M C C C M M C M C M Front of Cam M C C M 2008-11 LLT ( IT drive, Hollow), 2010-11 LF1/LFW RH EXH RH INT LH INT LH EXH Rear of Cam M M C M C M C C M M C C C M C M Front of Cam M C M M 2012 LF1/LFW (new thrust ring diameter) RH EXH RH INT LH INT LH EXH Rear of Cam M M C C C M C M M M C C C M C M Front of Cam M C M M 2012-2017 LFX (new thrust ring diameter) RH EXH RH INT LH INT LH EXH Rear of Cam M M C C C M M M M M M C C C M M Front of Cam M C C M 2012 LY7 (new thrust ring diameter) RH EXH RH INT LH INT LH EXH Rear of Cam C M C M C M C C C M C C M M C C Front of Cam C C M C 2012 and newer LLT (new thrust ring diameter) RH EXH RH INT LH INT LH EXH Rear of Cam M M C M C M C C M M C C C M C M Front of Cam M C M M 2014 and newer LF3 (vac. Pump slot, SADI lobe) RH EXH RH INT LH INT LH EXH Rear of Cam M M C M M M C C C M C M M M C M Front of Cam C C M C 2018 and newer LFY and LFX RH EXH RH INT LH INT LH EXH Rear of Cam M M M C M M C M M C M M C M M M M M M M Front of Cam Version History Version 1 Modified © 2016 General Motors. All Rights Reserved.