PIP5882
Service Bulletin Details
Public Details for: PIP5882
This preliminary information communicates diagnostic aid to help isolate possible repeat thermal by-pass valve concern.
- 2021 - 2020 - 2019 - 2018 - 2017 - 2016 - 2015 - 2014 -
Models from 2021
| 2021 CHEVROLET EXPRESS |
| 2021 CHEVROLET SILVERADO 1500 |
| 2021 CHEVROLET SILVERADO 2500 |
| 2021 CHEVROLET SILVERADO 3500 |
| 2021 GMC SAVANA |
| 2021 GMC SIERRA 1500 |
| 2021 GMC SIERRA 2500 |
| 2021 GMC SIERRA 3500 |
Models from 2020
Models from 2019
Models from 2018
Models from 2017
Models from 2016
Models from 2015
Models from 2014
Bulletin No.: PIP5882 Published date: 10/3/2022 Preliminary Information PIP5882 Diagnostic Tips - 2014 through 2021 6L80 MYC and 6L90 MYD Transmissions with an Overheat Concern Models Brand: Model: Model Years: VIN: from to Engine: Transmissions: Chevrolet Express 2014 - 2021 All All All MYD Chevrolet Silverado 1500 2014 - 2018 All All All MYC Chevrolet Silverado 1500 New Model 2019 All All All MYC Chevrolet Silverado 1500 2020 - 2021 All All All MYC Chevrolet Silverado 2500/3500 2014 - 2021 All All All MYD Chevrolet Suburban 2014 - 2020 All All All MYC Chevrolet Tahoe 2014 - 2020 All All All MYC GMC Savana 2014 - 2021 All All All MYD GMC Sierra 1500 2014 - 2018 All All All MYC GMC Sierra 1500 New Model 2019 All All All MYC GMC Sierra 1500 2020 - 2021 All All All MYC GMC Sierra 2500/3500 2014 - 2021 All All All MYD GMC Yukon Models 2014 - 2020 All All All MYC Involved Region or Country North America & NA Exports Condition Cause Some customers may comment that the transmission uid temperature is too hot. Diagnostic aid to help isolate a transmission overheat concern. Correction: Information on Transmission Thermal By-Pass Valve (TBV) operation: The TBV starts to open between 180 to 187 F ( 82-86 C). The TBV is fully opened at 194 F (90 C). Note : If the TBV has been replaced following TSB 21-NA-199, the operating temperature will be lower. The TBV starts to open between 138 to 145 F (59-63 C). The TBV is fully opened at 158 F (70 C). Reference TSB 21-NA-199 to help identifying the new TBV. Diagnosis: - Drive the vehicle long enough to bring the transmission uid temperature up to 190 F to insure the TBV is open. - Use an infrared thermometer and check the temperature of the pan surface. - Compare the pan temperature to the transmission temperature in the scan tool data. The pan temperature and the transmission data temperature should be close to the same. - Use the infrared thermometer to check the temperature of the TBV. - Use the infrared thermometer to check the temperature of both cooler lines about 6 inches away from the TBV. - The cooler line going to the cooler will be higher than the pan temperature. - If the cooling system is working correctly the cooler return line will be lower in temperature than the line going to the cooler. - If the TBV is not opening both cooler lines temperatures will be lower than the transmission pan temperature and the TBV temperature will be higher than the pan temperature. Compare the pan temperature to the DIC trans temp, if is more than 15 degrees higher than the pan temperature, the temp sensor maybe bad. The sensor is part of the TEHCM If the 3 temperatures are all about the same, then the TBV valve is working correctly. If the pan temperature is 10-15 degrees F higher than the cooler line temperature, then the TBV is not working correctly and should be replaced. If all three temperature points are above the engine coolant temperature, then there could be an aux cooler ow issue and the ow should be checked. The cooler should also be checked to make sure nothing is restricting the air ow across it. Version History Version Modi ed 1 10/03/2022 - Created on. © 2022 General Motors. All Rights Reserved.