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Service bulletin 19NA275

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 id10181685
Published by NHTSA2020-10-26
Manufacturer's number19NA275
Manufacturer's date2020-09-29
NHTSA componentVEHICLE SPEED CONTROL

NHTSA's summary

This technical bulletin provides service information to correct a customer concern of a moan type noise being heard during low speeds maneuvers.

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

Throttle and cruise control

Vehicles listed
CADILLAC CT62019, 2020

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
10-08-110-001L2025-02-11. Service bulletin. This service bulletin provides information on proper use of floor mats.
PIT61272024-03-18. Service bulletin. This Preliminary information communicates a vehicle may come to the dealer with Super Cruise inoperative. On inspection the tech will find code B126B. Tech is given direction on how to update the Map module to restore function. Dealer is also given directions to give to customer to ensure they continue to receive updates.
PIP5848A2023-04-17. Service bulletin. This Preliminary information communicates additional diagnostics for shudder related complaints.
N2023239302021-02-16. Service bulletin. Service Update - vehicles may have been retrofitted with an incorrect left hand under hood electrical center cover and others may have received a replacement left hand under hood electrical center with an incorrect fuse. Dealers will replace the electrical center cover on two vehicles and fuse on two vehicles.
PIC6312C2020-02-10. Service bulletin. This Preliminary information communicates diagnostic tips to assist with diagnosis of the Super Cruise system.
N192211740 022019-08-19. Service bulletin. Customer Satisfaction Program (revised service procedure and warranty information). General Motors is expanding the mileage of Super Cruise enabled roads to include over 70,000 additional miles (112,000 additional km) by the end of 2019, bringing the total number of Super Cruise enabled roads to over 200,000 miles (320,000 km). In addition to the currently mapped roads, this mileage expansion allows for the Super Cruise driver assistance feature to be engaged on divided, high-speed main roads that contain some limited intersections and traffic control devices. As always, it remains important for drivers to stay engaged and vigilant at all times while Super Cruise is engaged. Reprogram Active Safety Control Module and the Digital Map Control Module.
PIC6265D2018-12-17. Service bulletin. This Preliminary information communicates that a vehicle may exhibit a Adaptive Cruise Control Unavailable and/or Lane Keep Assist Unavailable message. The technician may attempt to program the Active Safety Control Module (ASCM) and encounter a code E4399. The technician is advised if he encounters this concern to zero the MIC counter by placing the vehicle into and back out of "Transport Mode".