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Service bulletin PIT5481C

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 id10129082
Published by NHTSA2018-02-21
Manufacturer's numberPIT5481C
Manufacturer's date2018-01-19
NHTSA componentAIR BAGS; POWER TRAIN; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC); FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; STEERING; LANE DEPARTURE

NHTSA's summary

This Preliminary Information communication provides information to the technician with additional information on the functionality of Lane Keep Assist.Starting with2016 model year Lane Keep Assist Regular Production Option Code (UHX) replaced Lane Departure Warning Regular Production Option Code (UFL). Lane Keep Assist is designed to assist the driver in keeping the vehicle from drifting out of a driving lane that has clearly identified markings. The electric power steering provides a gentle steering correction if a lane marking has been crossed and the driver has not actively responded.

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

Air bags, Driver assistance, Fuel system, Steering, Transmission and driveline, Fuel tank

Vehicles listed
BUICK ENVISION2016, 2017, 2018
CADILLAC ESCALADE ESV2016 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC ESCALADE ESV2017, 2018
CHEVROLET EQUINOX2018
CHEVROLET SILVERADO2017
CHEVROLET SILVERADO 25002016 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002018 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN2016, 2017, 2018
CHEVROLET TAHOE2016, 2017, 2018
GMC SIERRA2017
GMC SIERRA 15002016 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 35002018 (the catalog's model; the bulletin names a series or trim of it)
GMC TERRAIN2018
GMC YUKON DENALI2016, 2017, 2018 (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
23V0470002023-02-02. FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY
19V0880002019-02-07. FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY

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
17-NA-3022024-03-28. Service bulletin. This informational bulletin provides information on availability for a locking gas cap for trucks are operated in high amount of dirt or dust which can migrate to the filler cap area.
23-NA-0472023-04-13. Service bulletin. This informational bulletin provides information for dealers/technicians on Dust, Snow or Water Around Fuel Filler Area.
19NA2772020-03-02. Service bulletin. This technical bulletin provides a procedure to replace the fuel tank, sending unit and install a piece of fuel hose to the vent and route down the fuel feed line and secure with zip ties.
17NA2652019-08-19. Service bulletin. This technical bulletin provides repair information to correct a customer concern of hearing a flutter or thump noise from rear of vehicle.
N1821996102019-05-13. Service bulletin. N182199610 - Customer Satisfaction Program. Certain vehicles may have a condition in which the high-pressure fuel pump may crack and potentially leak fuel. This may occur over time with vehicle usage. If a fuel leak occurs, the customer may notice an odor. If the fuel leak is unaddressed, the vehicle may fail to start, exhibit reduced engine power, or lose propulsion. This will display a message on the Driver Instrument Cluster and illuminate the Check Engine Light. Dealers will replace the high-pressure fuel pump and insulator.
PIP5427B2019-04-08. Service bulletin. This Preliminary Information communication provides information to the technician about vehicle that may have a Service Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P2635, U0074 and or U18A2. Technician will need to follow published diagnostics for Diagnostic Trouble Codes U0074 would take priority over U18A2 if both set before addressing DTC P2635.
181572018-08-20. Service bulletin. 18157 - Customer Satisfaction Program. Certain Low Cab Forward vehicles, equipped with diesel engines, may have a condition in which the Fuel Tank Sub Unit float arm in the rear-mounted fuel tank may become disconnected causing the fuel gauge to display ?Empty? (E) regardless of the actual fuel level. Dealers are to replace the Fuel Tank Sender Unit.
170672018-08-06. Service bulletin. 17067 - Product Emissions Recall. General Motors has decided to conduct a Voluntary Emission Recall on certain vehicles equipped with a 6.6L diesel (LML) engine and dual fuel tanks (N2N). Under certain driving conditions, fuel may not be transferred from the rear fuel tank to the front fuel tank at a sufficient rate. If this occurs, the diagnostic trouble code (DTC) P2636 will set, the malfunction indicator lamp will illuminate, the fuel gauge will display empty, and the transfer pump will be disabled until serviced. If the vehicle continues to be driven, it will run out of fuel in the front tank and stall. Dealers are to replace fuel line connections to allow the rear tank, in addition to the front tank, to directly supply fuel to the engine. The engine control module (ECM) will also be reprogrammed with calibrations necessary to support this new connection.
17-NA-2652018-06-11. Service bulletin. This technical bulletin provides repair information to correct a customer concern of hearing a flutter or boom noise from rear of vehicle.
17NA4022018-06-04. Service bulletin. This technical bulletin provides a procedure to replace relays that may be sticking in cold regions.