PIP5429A
Service Bulletin Details
Public Details for: PIP5429A
This preliminary information communication advises the technician that the customer may experience a 2-3 slip or flare after the vehicle has been sitting for a period of time. Technician can update the transmission control module if working
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Bulletin No.: PIP5429A Published date: 05/8/2020 Preliminary Information PIP5429A 2-3 Upshift Slip or Flare Models Brand: Model: VIN: Model Years: from Engine: to Transmissions: Cadillac ATS 2013 - 2015 All All All MYA Cadillac CTS Models 2008 - 2015 All All All MYA MYB MYD Cadillac Escalade Models 2007 - 2016 All All All MYC Cadillac SRX 2007 - 2009 All All All MYB Cadillac STS Models 2006 - 2011 All All All MYB MYC Cadillac XLR Models 2006 - 2009 All All All MYC Chevrolet Avalanche 2007 - 2013 All All All MYC Chevrolet Caprice PPV 2011 - 2017 All All All MYA MYC Chevrolet Colorado 2015 - 2020 All All All MYB Chevrolet Camaro 2010 - 2015 All All All MYB MYC MYD Chevrolet Corvette 2006 - 2014 All All All MYC Chevrolet Express 2010 - 2020 All All All MYD Chevrolet Silverado 2014 - 2018 All All All MYC MYD Chevrolet Silverado New Model 2019 All All All MYC MYD Chevrolet Silverado 2020 All All All MYC MYD Chevrolet SS 2014 - 2017 All All All MYC Chevrolet Suburban 2007 - 2020 All All All MYC Chevrolet Tahoe 2007 - 2020 All All All MYC GMC Canyon 2015 - 2020 All All All MYB GMC Savana 2010 - 2020 All All All MYD GMC Sierra Models 2014 - 2018 All All All MYC MYD GMC Sierra New Model 2014 - 2018 All All All MYC MYD GMC Sierra Models 2020 All All All MYC MYD GMC Yukon Models 2007 - 2020 All All All MYC Hummer H2 Models 2008 - 2011 All All All MYC Involved Region or Country NORTH AMERICA and N.A. EXPORT REGIONS Condition Some customers may comment on a 2-3 upshift slip or flare. Cause This condition is a NORMAL characteristic of the transmission, it will not cause durability concerns and no repair attempts should be made. Service Procedure: At this time this flare condition has been recognized in two different driving conditions: 1. During the first 2-3 upshift after the vehicle has been sitting, engine off for several hours. This condition may be caused by air that is trapped in the 3-5-R clutch assembly. When the first 2-3 upshift is made this trapped air is purged and the following 2-3 shifts will be normal with no flare. When diagnosing this condition a garage shift into reverse before drive will purge this air and prevent the 2-3 flare from occurring. This condition is a NORMAL characteristic of the transmission, it will not cause durability concerns and no repair attempts should be made. Please communicate to the customer this will not impact the designed performance or reliability of the vehicle. Please share this information with the customer, including a copy of this message. 2. When transmission ATF temperature is at or below 85 degrees F (30 degrees C). This 2-3 upshift flare can occur until the ATF temperature warms. If the 2-3 flare is determined to be ATF temperature sensitive use a Tech 2 or GDS2 to make note of the throttle position when the flare occurs. Drive the vehicle to get ATF temperature to at least 104 degrees F (40 degrees C) and then make several 2-3 shifts at the throttle position determined to be the most sensitive to the 2-3 flare. This will allow the transmission adapts to tailor the shifts and may help to eliminate the cold 2-3 flare. This condition is a NORMAL characteristic of the transmission, it will not cause durability concerns and no repair attempts should be made. Please communicate to the customer this will not impact the designed performance or reliability of the vehicle. Please share this information with the customer, including a copy of this message. Notice: A revised TCM calibration has been released and is available on TIS2WEB to improve this concern in 2007 vehicles equipped with the 6L90 RPO MYD automatic transmission. Version History Version Modi ed 1 10/10/2016 - Created on. 05/08/2020 - Added Model Years. © 2020 General Motors. All Rights Reserved.