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NHTSA ID Number: 10222670
Manufacturer Communication Number: 22-NA-184
Summary
This informational bulletin advises the technician of possibly installing the incorrect 1-2-7-8-R clutch fluid passage seal and which seal should be used with measurements of the seal.
Condition
Technician’s may find a no movement condition after replacement of the valve body on the 8L45 or 8L90 automatic transmission.
Cause
This may be due to the incorrect 1-2-7-8-R clutch fluid passage seal being installed or it is missing.
Correction
Technician should remove the transmission valve body and inspect for the 1-2-7-8-R clutch fluid passage seal to be installed correctly.
If the 1-2-7-8-R clutch fluid passage seal was installed during the valve body, then the technician will need to measure the length of the seal to make sure the correct seal was installed.
The 8L45 seal part number is 24262438 and the seal has no ID notches. This seal is 33.5 MM (1,32 in) tall.
The 8L90 seal part number is 24259218 and the seal has 5 ID notches. This seal is 23.1 MM (0.91 in) tall.
88 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
CADILLAC | ATS | 2016-2019 |
| CADILLAC | ATS-V | 2016-2018 |
| CADILLAC | CT4 | 2020-2022 |
| CADILLAC | CT6 | 2016-2018 |
| CADILLAC | CTS | 2016-2019 |
| CADILLAC | CTS-V | 2016, 2018 |
| CADILLAC | ESCALADE | 2015-2017 |
| CADILLAC | ESCALADE ESV | 2015-2017 |
| CHEVROLET | CAMARO | 2016-2022 |
| CHEVROLET | COLORADO | 2017-2022 |
| CHEVROLET | CORVETTE | 2015-2019 |
| CHEVROLET | EXPRESS | 2017-2022 |
| CHEVROLET | SILVERADO 1500 | 2015-2022 |
| CHEVROLET | SUBURBAN | 2015-2017 |
| GMC | CANYON | 2017-2022 |
| GMC | SAVANA | 2017-2022 |
| GMC | SAVANA 1500 | 2017 |
| GMC | SAVANA 2500 | 2017-2018 |
| GMC | SAVANA 3500 | 2017-2018 |
| GMC | SIERRA 1500 | 2015-2022 |
| GMC | YUKON DENALI | 2015-2017 |
1 Associated Document
Manufacturer Communications
Bulletin No.: 22-NA-184
Date: September, 2022
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- Helps enhance transmission cooling function
- Designed to protect metal surfaces from wea
- Formulated to condition gaskets
- Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
- ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.
- TRIAX ULV ATF is a 100% synthetic product designed for the late generation high-speed automatic electronically controlled transmissions found in a variety of newer vehicles
- Fully compliant with OEM requirements for applications requiring / compatible with Mercon ULV, Dexron ULV, WSS-M2C949-A or MB 2236.17, and other ULV applications in European and US cars, trucks and SUVs
- High shear and oxidation stability for uncompromised long term shifting performance; excellent load bearing capacity for heavy duty applications
- Very low pour point for outstanding performance and fuel economy during cold weather, down to -50 F
- Prevents shudder, gear wear, sticking, and vibration; maintains optimal frictional stability for the full duration of its life; exceptionally smooth shifting and efficient torque transfer, even under severe loads such a towing or hauling
- Meets the demands of high-speed automatic transmissions
- High-performance conditioners protect seals and prevent leaks
- Advanced anti-wear technology improves durability to help extended the life your transmission
- Provides better oil flow in both low and high temperatures
- Full synthetic formula with advanced additives protects against transmission breakdown better than conventional fluids
- Backward compatible with previous Dexron automatic transmission fluids and can be used as a much-improved replacement for older vehicles/transmissions originally using previous Dexron fluids
- Improved performance over previous Dexron fluids in: friction durability, viscosity stability, aeration and foam control, and oxidation resistance
- Potential to enable improved fuel economy and longer transmission life
- Provides for extended drain intervals. Provides consistent shift performance, even in extreme conditions.
- Formulated with full-synthetic base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
- Enhanced anti-shudder protection for smooth shifting and maximum power transfer
- Developed with anti-wear technology to help improve transmission durability
- Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
SEOCONTENT-START
Copyright 2022 General Motors LLC. All Rights Reserved. Service Bulletin Bulletin No.: 22-NA-184 Date: September, 2022 INFORMATION Subject: Information on 8L45 8L90 Automatic Transmissions With No Movement After Valve Body Replacement This bulletin replaces PIP5784. Please discard PIP5784. Brand: Model: Model Year: VIN: Engine: Transmission: from to From to Cadillac ATS Models 2016 2019 M5N M5T M5U CT4 Models 2020 2022 M5N CT6 2016 2018 M5N M5X CTS Models 2016 2019 M5N M5U Escalade Models 2015 2017 M5U Chevrolet Camaro 2016 2022 M5T M5U Colorado 2017 2022 M5T Corvette 2015 2019 M5U Express 2017 2022 M5U MQD Silverado 2015 2018 M5U M5X Silverado 1500 LD 2019 2019 MQE Silverado 1500 Mew Model 2019 2019 MQE Silverado 1500 2020 2022 MQE Suburban 2015 2017 M5U GMC Canyon 2017 2022 M5T Savana 2017 2022 M5U MQD Sierra 2015 2018 M5U M5X Sierra 1500 Limited 2019 2019 MQE Sierra 1500 New Model 2019 2019 MQE Sierra 1500 2020 2022 MQE Yukon Denali 2015 2017 M5U Page 2 September, 2022 Bulletin No.: 22-NA-184 Involved Region or Country North America, Middle East Condition Technician’s may find a no movement condition after replacement of the valve body on the 8L45 or 8L90 automatic transmission. Cause This may be due to the incorrect 1-2-7-8-R clutch fluid passage seal being installed or it is missing. Correction Technician should remove the transmission valve body and inspect for the 1-2-7-8-R clutch fluid passage seal to be installed correctly. If the 1-2-7-8-R clutch fluid passage seal was installed during the valve body, then the technician will need to measure the length of the seal to make sure the correct seal was installed. The 8L45 seal part number is 24262438 and the seal has no ID notches. This seal is 33.5 MM (1,32 in) tall. The 8L90 seal part number is 24259218 and the seal has 5 ID notches. This seal is 23.1 MM (0.91 in) tall. Version 1 Modified Released September 07, 2022 GM bulletins are intended for use by professional technicians, NOT a “do-it-yourselfer”. They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information. WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION
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