Service bulletin PIT5985C
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 | 10247364 |
| Published by NHTSA | 2023-12-18 |
| Manufacturer's number | PIT5985C |
| Manufacturer's date | 2023-11-17 |
| NHTSA component | POWER TRAIN |
NHTSA's summary
This Preliminary information communicates diagnostic tips on how to resolve a issues with vehicles that will not power up after a can bus 2 issue, lightning strike, or a failed over the air update.
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
Transmission and driveline
| BRIGHTDROP EV600 | 2022 |
|---|---|
| BUICK ENVISION | 2021, 2022, 2023 |
| CADILLAC CT4 | 2020, 2021, 2022, 2023, 2024 |
| CADILLAC CT5 | 2020, 2021, 2022, 2023, 2024 |
| CADILLAC ESCALADE | 2024 |
| CADILLAC ESCALADE ESV | 2021, 2022, 2023 |
| CADILLAC LYRIQ | 2023 |
| CADILLAC XT4 | 2024 |
| CADILLAC redundant LYRIQ | 2024 |
| CHEVROLET BLAZER EV | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET COLORADO | 2023 |
| CHEVROLET CORVETTE | 2020, 2021, 2022, 2023, 2024 |
| CHEVROLET SILVERADO 1500 | 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 2500 | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO EV | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SUBURBAN | 2021, 2022, 2023, 2024 |
| CHEVROLET TAHOE | 2021, 2022, 2023, 2024 |
| GMC CANYON | 2023 |
| GMC HUMMER EV PICKUP | 2022, 2023 |
| GMC HUMMER EV SUV | 2024 |
| GMC SIERRA 1500 | 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 2500 | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| GMC YUKON XL | 2021, 2022, 2023, 2024 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 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 |
| 2025118 | 2025-03-06. Powertrain |
| 25V148000 | 2025-03-06. POWER TRAIN:AUTOMATIC TRANSMISSION |
| 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 |
| 22V091000 | 2022-02-17. POWER TRAIN:DRIVELINE:DRIVESHAFT |
| 2022027 | 2022-01-27. Powertrain |
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. |
|---|---|
| N252502890-01 | 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 front electric drive transmission module. |
| N242471460-01 | 2026-08-20. Service campaign. Certain vehicles may have been built with an Electric Drive Unit mounting bolt that is too long, causing damage to the Drive Unit case. Dealers will inspect and replace the Electrical Drive Unit if necessary. |
| 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. |
| 24-NA-133 | 2025-10-25. Service bulletin. This informational bulletin provides information on Wheel Drive Shaft Retention Snap Ring Design Change. |
| 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. |