NHTSA ID Number: 10224291
Manufacturer Communication Number: PIP5810A
Summary
This Preliminary information communicates that the tool for the HD transfer cases to install the input seal during a repair is incorrect and a new tool is in development.
Condition
Transfer case input seal installation tool will not install seal to correct depth causing a leak.
Cause
New tool being developed.
16 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
| CHEVROLET | SILVERADO 2500 | 2020-2023 |
| CHEVROLET | SILVERADO 3500 | 2020-2023 |
| GMC | SIERRA 2500 | 2020-2023 |
| GMC | SIERRA 3500 | 2020-2023 |
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5810A
Published date: 09/19/2022
MC-10224291-9999.pdf 1001.044KB
NHTSA ID Number: 10201286
Manufacturer Communication Number: PIP5810
Summary
This Preliminary information communicates that the tool for the HD transfer cases to install the input seal during a repair is incorrect and a new tool is in development.
1 Associated Document
Manufacturer Communications
Bulletin No.: PIP5810
Published date: 06/16/2021
MC-10201286-9999.pdf 1004.226KB
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Bulletin No.: PIP5810A Published date: 09/19/2022 Preliminary Information PIP5810A Transfer Case Input Seal Installation Models Brand: Chevrolet
GMC Model: Silverado 2500 HD/3500 HD Sierra 2500 HD/3500 HD Model Years: 2020 – 2023 2020 – 2023 VIN: from to All All All All Engine: Transmissions: MGM MGU MGM MGU Involved Region or Country Additional Options (RPO) Condition Cause North America NGF, NQH Transfer case input seal installation tool will not install seal to correct depth causing a leak. New tool being developed. Correction: Seal installation depth is critical when replacing the transfer case input seal. There is a gap around the outer portion of the seal that needs to be centered over a weep hole in the case. Weep hole is drilled in the center of a grove machined into the case. Tool # DT-50648-A Seal Installer will not work for these applications. There are 2 design transfer case front case halves and the seals install at different depths between design 1 and 2. To identify design level look for a machined groove where the seal is installed (Red circles below). If there is a defined machined groove in the case then it is a first design case. If there is not a defined groove machined into the case then it is second design. First Design Second Design While GM works through the servicing tool strategies, J-45228 (4) can be used to drive the seal in HOWEVER there is no stop at the correct depth. The seal will have to be driven in slowly and seal installed depth checked. Be careful not to drive in to deep or you will need to replace the seal again. One tip for installation is to determine case design level, and put a mark on the outside of J-45228 at 17 mm for first design and 19.5 for second design (3) as a visual aid to stop when the mark is even with the case. To verify correct installed depth using a vernier caliper check the distance between the case and the outer part of the seal. First design dimension 1 is 10 mm. Second design dimension 2 is 13 mm. Warranty Information No associated or special labor operation, please use the labor operation for the repair being performed, this document was created to ensure correct depth in case of a seal replacement. Version History Version 2 Modified 05/29/2021 – Created on 09/19/2022 – Added model years 2022 and 2023. © 2022 General Motors
. All Rights Reserved.
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