This technical bulletin provides a repair procedure to correct a customer concern of Delayed and/or Harsh...
Chevrolet technical service bulletin 20NA187 for 2018-2021 Chevrolet Silverado 1500, 2019-2021 GMC Sierra 1500 and 2019 Chevrolet Corvette and others.
- Bulletin number
- 20NA187
- Component
- Power train
- Summary
- This technical bulletin provides a repair procedure to correct a customer concern of Delayed and/or Harsh Engagement of Transmission Shift After Vehicle Sitting with Engine Off.
Owners of these vehicles have filed 1,741 complaints in the transmission category.
Vehicles covered
- Chevrolet Silverado 1500 2018-2021 2018201920202021
- GMC Sierra 1500 2019-2021 201920202021
- Chevrolet Corvette 2019 2019
- Chevrolet Silverado 2500 2018-2019 20182019
- Chevrolet Colorado 2018-2021 2018201920202021
- Chevrolet Camaro 2018-2021 2018201920202021
- Cadillac CTS 2018-2019 20182019
- GMC Sierra 2500 2018 2018
- GMC Canyon 2018-2021 2018201920202021
- Chevrolet Express 2019-2020 20192020
- Cadillac Ats 2018-2019 20182019
- GMC Savana 2018-2019, 2021 201820192021
- GMC Sierra Denali 2018-2019 20182019
- Cadillac CT6 2018-2019 20182019
- Cadillac CT4 2021 2021
- Chevrolet Silverado 4500 2019 2019
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