2-3 Upshift Slip or Flare – 2006-2023 Cadillac Chevrolet GMC Hummer

NHTSA ID Number: 10222832

Manufacturer Communication Number: 22-NA-185

Summary

This informational bulletin explains how the trans slip or flare can be a normal condition.

 


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.

 

Information

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 causedurability 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 share this information with the customer, including a copy of this message.

 


358 Affected Products

Vehicles

MAKE MODEL YEAR
CADILLAC ATS 2013-2015
CADILLAC ATS-V 2015
CADILLAC CTS 2008-2018
CADILLAC CTS-V 2010-2012, 2014-2015
CADILLAC ESCALADE 2007-2016
CADILLAC ESCALADE ESV 2007-2016
CADILLAC ESCALADE EXT 2007-2014
CADILLAC ESCALADE EXT 1500 2007-2011
CADILLAC ESCALADE HYBRID 2008-2014
CADILLAC SRX 2007-2009
CADILLAC STS 2006-2011
CADILLAC XLR 2006-2009
CHEVROLET AVALANCHE 2007-2013
CHEVROLET AVALANCHE 1500 2007-2013
CHEVROLET AVALANCHE 2500 2007, 2013
CHEVROLET CAMARO 2010-2015
CHEVROLET CAPRICE POLICE PURSUIT 2012-2017
CHEVROLET COLORADO 2015-2022
CHEVROLET CORVETTE 2006-2014
CHEVROLET EXPRESS 2010-2022
CHEVROLET EXPRESS 1500 2010-2012, 2014
CHEVROLET EXPRESS 2500 2010-2011, 2014
CHEVROLET EXPRESS 3500 2010, 2012, 2014
CHEVROLET EXPRESS 4500 2012, 2014, 2016
CHEVROLET EXPRESS CUTAWAY 2013
CHEVROLET SILVERADO 1500 2014-2022
CHEVROLET SILVERADO 2500 2019-2023
CHEVROLET SILVERADO 3500 2019-2023
CHEVROLET SS 2014-2017
CHEVROLET SUBURBAN 2007-2020
CHEVROLET SUBURBAN 1500 2007-2011
CHEVROLET SUBURBAN 2500 2008-2011
CHEVROLET TAHOE 2007-2020
CHEVROLET TAHOE HYBRID 2008-2013
CHEVROLET TAHOE POLICE PURSUIT 2010-2016
GMC CANYON 2015-2022
GMC SAVANA 2010-2022
GMC SAVANA 1500 2010-2017
GMC SAVANA 2500 2010-2018
GMC SAVANA 3500 2010-2018
GMC SIERRA 1500 2014-2022
GMC SIERRA 2500 2019-2023
GMC SIERRA 3500 2019-2023
GMC YUKON 2007-2020
GMC YUKON DENALI 2007-2013, 2015-2019
GMC YUKON DENALI XL 2007-2018
GMC YUKON HYBRID 2008-2013
GMC YUKON XL 2007-2020
GMC YUKON XL 1500 2007-2012
GMC YUKON XL 2500 2007-2013
HUMMER H2 2008-2010

 


1 Associated Document

Manufacturer Communications

Bulletin No.: 22-NA-185
Date: October, 2022

https://www.nhtsa.gov/recalls?nhtsaId=10222832

MC-10222832-0001.pdf 524.927KB

MC-10222832-0001

 


NHTSA ID Number: 10224297

Manufacturer Communication Number: PIP5429A

Summary

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 on a model year 2007. On all other model years dealer should communicate to the customer this condition is a normal operating characteristic of their vehicle.

 

1 Associated Document

Manufacturer Communications

Bulletin No.: PIP5429A
Published date: 09/26/2022

https://www.nhtsa.gov/recalls?nhtsaId=10224297

MC-10224297-9999.pdf 108.445KB

MC-10224297-9999

 


 

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Last update on 2023-01-06 / Affiliate links / Images from Amazon Product Advertising API

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