WenmarOpen by Wenmar Pro

Service bulletin N192265570

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10164110
Published by NHTSA2019-08-26
Manufacturer's numberN192265570
Manufacturer's date2019-06-28
NHTSA componentEQUIPMENT; POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY

NHTSA's summary

N192265570 - Service Update. Certain vehicles may have misalignment between the transmission output shaft and the transfer case input. Transfer case to transmission misalignment could cause the transfer case shift collar to slip out of engagement. Customers may experience noise, vibration, or harshness issues such as a clunk noise heard during coast down event. Dealers will perform a road test inspection and retorque the transfer case if necessary.

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

Vehicles listed
CHEVROLET SILVERADO 45002020 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 35002020 (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.

Recalls for the same vehicles and component
20260602026-02-12. Powertrain
26V0830002026-02-12. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY
20246372024-10-24. Powertrain
24V7970002024-10-24. POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE
20221602022-03-31. Accessories
20205052020-10-23. Powertrain
20V6500002020-10-22. POWER TRAIN:DRIVELINE:DRIVESHAFT
20201652020-04-16. Accessories
20194942019-10-03. Accessories

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
24-NA-2622025-12-03. Service bulletin. This bulletin helps aid the tech in possible 10L100 transmission noise that may be normal or abnormal depending on the concern noted.
N242454441 -032025-10-09. 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.
21-NA-2382025-07-07. Service bulletin. This technical bulletin provides a procedure to inspect the front pump of the transmission for a possible leak.
PI0281L2025-06-12. Service bulletin. This preliminary informational (PI) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers.
23-NA-1852025-04-28. Service bulletin. This service bulletin helps diagnose/reduce possible CCND issues on Transfer Cases - Service 4WD on DIC, Intermittent Failures, Noise Concerns, Driveline/Steering Vibration/Shudder, Intermittent DTCs/MIL Illuminated, Engagement/Disengagement/Ratcheting Concerns.
PIP5966A2025-03-02. Service bulletin. This Preliminary information communicates Diagnostic aids for a no start or DTC'S following a transmission replacement
PIP5966A2025-03-02. Service bulletin. This Preliminary information communicates Diagnostic aids for a no start or DTC'S following a transmission replacement
24-NA-2642025-02-27. Service bulletin. This bulletin helps aid the tech in possible noise that may be normal or abnormal depending on the concern noted.
16-NA-0192025-02-19. Service bulletin. This service bulletin provides information on Transmission Adaptive Functions and Correcting Low Mileage Harsh Shifts, Slips, or Flares.
PIP5175F2025-02-10. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that may have a delayed engagement into drive, shudder at a launch, or the transmission is slipping when shifting into 1st, 2nd, 3rd or 4th gears. This may be due to loose stator support to pump cover bolts causing a leak at the stator support to pump cover gasket. Technician will check for the bolts to be loose. If any of the bolts are loose or the gasket is misaligned or leaking, the transmission pump cover must be replaced and the 1234 clutch plates should be inspected for being distressed and repaired as needed.