Bulletin Information

Bulletin Title: #21-NA-199 - Information on Installation of a New Thermal Bypass Valve (TBV) - (Aug 10, 2022)
Bulletin Type: Information
Applies To: Automatic Transmission

Applicable Vehicles

2021 GMC Sierra 1500 - 4WD
2021 GMC Sierra 1500 - 2WD
2021 GMC Savana
2021 Chevrolet Silverado 1500 - 4WD
2021 Chevrolet Silverado 1500 - 2WD
2021 Chevrolet Express
2020 GMC Yukon XL - 4WD
2020 GMC Yukon XL - 2WD
2020 GMC Yukon - 4WD
2020 GMC Yukon - 2WD
2020 Chevrolet Tahoe - 4WD
2020 Chevrolet Tahoe - 2WD
2020 Chevrolet Suburban - 4WD
2020 Chevrolet Suburban - 2WD
2020 Cadillac Escalade ESV - 4WD
2020 Cadillac Escalade ESV - 2WD
2020 Cadillac Escalade - 4WD
2020 Cadillac Escalade - 2WD
2019 GMC Yukon XL - 4WD
2019 GMC Yukon XL - 2WD
2019 GMC Yukon - 4WD
2019 GMC Yukon - 2WD
2019 GMC Sierra Limited - 4WD
2019 GMC Sierra Limited - 2WD
2019 Chevrolet Tahoe - 4WD
2019 Chevrolet Tahoe - 2WD
2019 Chevrolet Suburban - 4WD
2019 Chevrolet Suburban - 2WD
2019 Chevrolet Silverado LD - 4WD
2019 Chevrolet Silverado LD - 2WD
2019 Chevrolet Silverado 1500 - 4WD (New Model, 12th VIN Digit = 7)
2019 Cadillac Escalade ESV - 4WD
2019 Cadillac Escalade ESV - 2WD
2019 Cadillac Escalade - 4WD
2019 Cadillac Escalade - 2WD
2018 GMC Yukon XL - 4WD
2018 GMC Yukon XL - 2WD
2018 GMC Yukon - 4WD
2018 GMC Yukon - 2WD
2018 GMC Sierra - 4WD
2018 GMC Sierra - 2WD
2018 Chevrolet Tahoe - 4WD
2018 Chevrolet Tahoe - 2WD
2018 Chevrolet Suburban - 4WD
2018 Chevrolet Suburban - 2WD
2018 Chevrolet Silverado - 4WD
2018 Chevrolet Silverado - 2WD
2018 Cadillac Escalade ESV - 4WD
2018 Cadillac Escalade ESV - 2WD
2018 Cadillac Escalade - 4WD
2018 Cadillac Escalade - 2WD
2017 GMC Yukon XL - 4WD
2017 GMC Yukon XL - 2WD
2017 GMC Yukon - 4WD
2017 GMC Yukon - 2WD
2017 GMC Sierra - 4WD
2017 GMC Sierra - 2WD
2017 Chevrolet Tahoe - 4WD
2017 Chevrolet Tahoe - 2WD
2017 Chevrolet Suburban - 4WD
2017 Chevrolet Suburban - 2WD
2017 Chevrolet Silverado - 4WD
2017 Chevrolet Silverado - 2WD
2017 Cadillac Escalade ESV - 4WD
2017 Cadillac Escalade ESV - 2WD
2017 Cadillac Escalade - 4WD
2017 Cadillac Escalade - 2WD
2016 GMC Yukon XL - 4WD
2016 GMC Yukon XL - 2WD
2016 GMC Yukon - 4WD
2016 GMC Yukon - 2WD
2016 GMC Sierra - 4WD
2016 GMC Sierra - 2WD
2016 Chevrolet Tahoe - 4WD
2016 Chevrolet Tahoe - 2WD
2016 Chevrolet Suburban - 4WD
2016 Chevrolet Suburban - 2WD
2016 Chevrolet Silverado - 4WD
2016 Chevrolet Silverado - 2WD
2016 Cadillac Escalade ESV - 4WD
2016 Cadillac Escalade ESV - 2WD
2016 Cadillac Escalade - 4WD
2016 Cadillac Escalade - 2WD

#21-NA-199 - Information on Installation of a New Thermal Bypass Valve (TBV) - (Aug 10, 2022)

Subject:
Information on Installation of a New Thermal Bypass Valve (TBV)
Attention: The new TBV will be stamped with the number 70 and should only be replaced once during any transmission repair, including Customer Concern Not Duplicated (CCND).

Brand:

Model:

Model Year:

VIN:

Engi...

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Document Tags

Document Title: #21-NA-199 - Information on Installation of a New Thermal Bypass Valve (TBV) - (Aug 10, 2022)

information

bypass

valve

stamped

replaced

transmission

repair

customer

concern

duplicated

ccnd

model

express

march

silverado

fort

wayne

april

suburban

tahoe

savana

sierra

yukon

following

harsh

shifts

time

part

cooler

temperature

revised

description

lines

added

labor

section

operation

parts information

silverado sierra

tahoe yukon

labor operation

model section

thermal bypass valve

model fort wayne

transmission cooler bypass

cooler bypass valve

suburban tahoe yukon

repairs requiring transmission

requiring transmission removal

revised october removed

parts information section