PIP4112S
Service Bulletin Details
Public Details for: PIP4112S
This preliminary information communication provides information to the technician of a complaint of a sag or hesitation when accelerating. The concern is present when coasting at low speeds of less than 15 miles per hour and then aggressive
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Bulletin No.: PIP4112S Published date: 03/12/2018 Preliminary Information PIP4112S Normal Characteristic - Sag Or Hesitation On Acceleration Models Brand: Model: Model Years: VIN: from Engine: to Transmissions: Buick Enclave 2008 - 2012 All All All All Buick LaCrosse 2010 - 2011 All All All MH7 Buick LaCrosse 2010 - 2013 All All All MH2, MH4 Buick Regal 2011 All All All MH7 Cadillac XLR 2006 - 2009 All All All All Cadillac XLR-V 2006 - 2009 All All All All Cadillac STS 2006 - 2011 All All All All Cadillac STS-V 2006 - 2011 All All All All Cadillac SRX 2007 - 2012 All All All All Cadillac Escalade Models 2007 - 2018 All All All All Cadillac CTS 2008 - 2018 All All All All Cadillac CTS-V 2008 - 2018 All All All All Cadillac ATS 2013 - 2018 All All All All Cadillac ATS-V 2013 - 2018 All All All All Cadillac CT6 2016 - 2018 All All All All Chevrolet Corvette 2006 - 2018 All All All All Chevrolet Avalanche 2007 - 2013 All All All All Chevrolet Silverado 2007 - 2018 All All All All Chevrolet Suburban 2007 - 2018 All All All All Chevrolet Tahoe 2007 - 2018 All All All All Chevrolet Colorado 2015 - 2018 All All All All Chevrolet Malibu 2008 - 2011 All All All MH8 Chevrolet Malibu 2008 - 2013 All All All MH2 Chevrolet Equinox 2008 - 2012 All All All MH2, MH4 Chevrolet Equinox 2009 - 2011 All All All MHC, MH7 Chevrolet Traverse 2009 - 2012 All All All All Chevrolet Cruze 2011 All All All All Chevrolet Cruze 2012 All All All MH9 Chevrolet Camaro 2010 - 2018 All All All All Chevrolet Express 2010 - 2018 All All All All Chevrolet Caprice 2011 - 2018 All All All All Chevrolet Captiva Sport 2012 All All All MHJ, MHK Chevrolet Orlando 2012 All All All All Chevrolet Sonic 2012 All All All MH9 Chevrolet Impala 2012 - 2013 All All All All Chevrolet SS 2014 All All All All GMC Sierra 2007 - 2018 All All All All GMC Yukon Models 2007 - 2018 All All All All GMC Canyon 2015 - 2018 All All All All GMC Acadia 2008 - 2012 All All All All GMC Terrain 2010 - 2012 All All All MH2, MH7 GMC Terrain 2010 - 2011 All All All MHC, MH7 GMC Savana 2010 - 2018 Model Years: 2008 - 2011 All Allfrom Allto All G6 2007 - 2010 All All All MH2 Pontiac G6 2009 - 2010 All All All MH8 Pontiac G8 2008 - 2009 All All All All Pontiac Torrent 2008 - 2009 All All All MH2, MH4 Saturn Aura 2007 - 2009 All All All MH2 Saturn Aura 2009 All All All MH8 Saturn Outlook 2008 - 2010 All All All MH2, MH4 Saturn Vue 2008 - 2010 All All All MH2, MH4 Brand: Hummer H2 Pontiac Model: VIN: All All All Engine: All Transmissions: *Excludes vehicles equipped with Diesel Engines Supersession Statement: This PI was superseded to update Model Years and Recommendation/Instructions. Please discard PIP4112R. Condition / Concern Some customers may comment on a sag or hesitation when accelerating under the following conditions: When coasting at low speeds of less than 15 miles per hour with a closed throttle and then aggressively applying the throttle. Examples of this maneuver include a rolling stop or a lane change maneuver. In this type of maneuver, even though the accelerator is applied aggressively, the throttle blade is opened slowly for up to 0.7 seconds to help minimize drive-line lash and clunking. Also in a vehicle equipped with an automatic transmission when making a hard, complete stop with a closed throttle, immediately followed by an aggressive throttle opening the transmission down-shifts may not be completed by the time the throttle is opened. As a result approximately 0.5 seconds of ″zero″ torque may be commanded to allow the shift to first gear to occur. Customers may also comment on a sag or hesitation while cruising at highway speeds and then aggressively increasing the throttle forcing a down-shift. This type of driving maneuver may result in approximately 0.5 seconds of ″zero″ torque being commanded to allow the down-shift to complete. Recommendations / Instructions All of the above conditions are a result of Torque Management and all of these conditions should be considered normal and no repairs should be attempted. Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. © 2016 General Motors. All Rights Reserved.