Service bulletin 22-NA-225
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10245200 |
| Published by NHTSA | 2023-11-10 |
| Manufacturer's number | 22-NA-225 |
| Manufacturer's date | 2023-10-17 |
| NHTSA component | POWER TRAIN; EQUIPMENT |
NHTSA's summary
This information bulletin advises the technician the difference between a welch cap leak and the output seal of the t-case or transmission leaking ATF, causing the customer concern of a Red Fluid Leak from Center of Vehicle Located by Rear of Transmission or Transfer Case Area.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Equipment and accessories, Transmission and driveline
| CADILLAC ESCALADE | 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 |
|---|---|
| CADILLAC ESCALADE ESV | 2015, 2016 (the catalog's model; the bulletin names a series or trim of it) |
| CADILLAC ESCALADE ESV | 2017, 2018, 2019, 2020, 2021, 2022, 2023 |
| CADILLAC ESCALADE NA | 2021 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET COLORADO | 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 |
| CHEVROLET EQUINOX | 2022 |
| CHEVROLET EXPRESS | 2015, 2016, 2017, 2018, 2019, 2020, 2021 |
| CHEVROLET EXPRESS 2500 | 2023 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET EXPRESS 3500 | 2023 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET EXPRESS 4500 | 2016 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET EXPRESS CUTAWAY VAN | 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 1500 | 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 2500 | 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 3500 | 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SUBURBAN | 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 |
| CHEVROLET SUBURBAN 1500 | 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET TAHOE | 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 |
| GMC CANYON | 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 |
| GMC SAVANA | 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 |
| GMC SAVANA 1500 | 2015, 2016, 2017 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SAVANA 2500 | 2015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SAVANA 2500 | 2023 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SAVANA 3500 | 2015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SAVANA 3500 | 2023 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 1500 | 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 2500 | 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 3500 | 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| GMC YUKON | 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023 |
| GMC YUKON DENALI | 2015, 2016, 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it) |
| GMC YUKON DENALI XL | 2015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it) |
| GMC YUKON XL | 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 |
| GMC YUKON XL 1500 | 2023 (the catalog's model; the bulletin names a series or trim of it) |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 26V289000 | 2026-05-07. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE) |
|---|---|
| 26V085000 | 2026-02-13. POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE |
| 2026061 | 2026-02-12. Powertrain |
| 2026060 | 2026-02-12. Powertrain |
| 26V083000 | 2026-02-12. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY |
| 25V876000 | 2025-12-17. EQUIPMENT ADAPTIVE/MOBILITY:WHEELCHAIR RESTRAINTS/SECUREMENT:LATCH/ANCHOR: |
| 2024679 | 2024-11-07. Powertrain |
| 24V839000 | 2024-11-07. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE |
| 2024637 | 2024-10-24. Powertrain |
| 24V797000 | 2024-10-24. POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE |
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| N252502891-01 | 2026-08-20. Service campaign. Certain vehicles may have a condition in which the internal differential nut was cross threaded or missing during assembly. Dealers will review the vehicles service history in IVH, and if necessary, replace the rear electric drive transmission module. |
|---|---|
| 25-NA-080 | 2025-12-03. Service bulletin. This service bulletin provides a procedure to overhaul the control valve to replace a plate and worn down check ball to correct the customers concern of No Reverse, No Shift Past Third Gear - DTC P2732 Set. |
| 24-NA-262 | 2025-12-03. Service bulletin. This bulletin helps aid the tech in possible 10L100 transmission noise that may be normal or abnormal depending on the concern noted. |
| 25-NA-108 | 2025-10-27. Service bulletin. This bulletin provides a procedure to inspect and verify the drive shafts are over extending past the 5mm tolerance, causing the customers concern of a fluid leak under the vehicle. |
| 25-NA-080 | 2025-10-16. Service bulletin. This service bulletin provides a procedure to overhaul the control valve to replace a plate and worn down check ball to correct the customers concern of No Reverse, No Shift Past Third Gear - DTC P2732 Set. |
| N242454441 -03 | 2025-10-09. Service campaign. Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure within the valve. The effects can cause harsh shifting, setting a service engine soon message, reduced engine performance or P0747 diagnostic trouble code. Dealers are to install a new control valve body. The repairs will be made at no charge to the customer. |
| 22-NA-182 | 2025-09-27. Service bulletin. This service bulletin advises the technician to check if the transmission cooler lines are twisted to correct customer concerns of Harsh Shift, Shudder, Surge, Stall, Transmission Overheating and/or High Transmission Fluid Temperature. |
| 25-NA-014 | 2025-07-08. Service bulletin. This bulletin provides a procedure to overhaul the control valve to replace a plate and worn down check ball to correct the customers concern of No Reverse, No Shift Past Third Gear - DTC P2732 Set. |
| 24-NA-078 | 2025-07-08. Service bulletin. This bulletin advises the tech to replace the starter and not the trans if grinding or growling is heard from the transmission area. |
| 24-NA-075 | 2025-07-07. Service bulletin. This bulletin provides a procedure to add a shim to the rear axle to change the pitch of said axle to correct the angle of the axle to pinion variance. |