2006 - 2014 Corvette: Service Bulletin: #PIP5429: 2-3 Upshift Slip or Flare - (Oct 10, 2016)


#PIP5429: 2-3 Upshift Slip or Flare - (Oct 10, 2016)

Brand:

Model:

Model Year:

VIN:

Engine:

Transmission:

from

to

from

to

Cadillac

ATS

2013

2015

All

All

All

6L45

Cadillac

CTS-V

2010

2015

All

All

All

6L90

Cadillac

SRX

2007

2009

All

All

All

6L50

Cadillac

XLR, XLR-V

2006

2009

All

All

All

6L80

Chevrolet

Caprice PPV

2011

2016

All

All

All

6L45, 6L80 

Chevrolet

Colorado

2015

2017

All

All

All

6L50

Chevrolet

Corvette

2006

2014

All

All

All

6L80

Chevrolet

Silverado

2007

2017

All

All

All

6L80, 6L90

Chevrolet

SS

2014

2017

All

All

All

6L80

GMC

Canyon

2013

2017

All

All

All

6L50

GMC

Sierra, Sierra Denali, 

2007

2017

All

All

All

6L80, 6L90

Hummer

H2, H2 SUT

2008

2011

All

All

All

6L80

 

Involved Region or Country

NORTH AMERICA and N.A. EXPORT REGIONS

Additional RPO/s:

N/A

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.

  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 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.

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



Article ID: 1316
Created On: Thu, Oct 13, 2016 at 6:45 PM
Last Updated On: Thu, Oct 13, 2016 at 6:45 PM

Online URL: http://www.corvetteactioncenter.com/tech/knowledgebase/article/2006-2014-corvette-service-bulletin-pip5429-2-3-upshift-slip-or-flare-oct-10-2016-1316.html