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Service bulletin 18NA235

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 id10212609
Published by NHTSA2022-05-31
Manufacturer's number18NA235
Manufacturer's date2022-01-21
NHTSA componentFUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP

NHTSA's summary

This information bulletin advised the tech of possible use of low fuel quality and the possible ramifications in performance in regards to the customers concerns.

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

Fuel system, Fuel pump

Vehicles listed
CADILLAC ESCALADE2015, 2016, 2017
CADILLAC ESCALADE ESV2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC ESCALADE ESV2017
CHEVROLET 35002021
CHEVROLET 35002022
CHEVROLET 45002022
CHEVROLET 4500HD2021, 2022
CHEVROLET 4500XD2021, 2022
CHEVROLET 5500HD2021, 2022
CHEVROLET 5500XD2021, 2022
CHEVROLET 6500HD2022
CHEVROLET 6500XD2021, 2022
CHEVROLET 7500XD2021, 2022
CHEVROLET BLAZER2021, 2022
CHEVROLET BOLT EUV2022
CHEVROLET BOLT EV2021, 2022
CHEVROLET CAMARO2021, 2022
CHEVROLET COLORADO2021, 2022
CHEVROLET CORVETTE2021, 2022
CHEVROLET EQUINOX2021, 2022
CHEVROLET EXPRESS2021
CHEVROLET LOW CAB FORWARD 45002021
CHEVROLET LOW CAB FORWARD 55002021
CHEVROLET LOW CAB FORWARD 65002021
CHEVROLET LOW CAB FORWARD 75002021
CHEVROLET MALIBU2021, 2022
CHEVROLET SILVERADO 15002017, 2018, 2019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002021, 2022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 35002021, 2022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 45002021, 2022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 55002019 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 55002021 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 65002021, 2022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SPARK2021, 2022
CHEVROLET SUBURBAN2019, 2020, 2021, 2022
CHEVROLET SUBURBAN 15002021, 2022 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TAHOE2018, 2019, 2020, 2021, 2022
CHEVROLET TRAILBLAZER2021, 2022
CHEVROLET TRAVERSE2021, 2022
CHEVROLET TRAX2021, 2022
GMC ACADIA2022
GMC BRIGHTDROP EV6002022
GMC CANYON2022
GMC HUMMER EV PICKUP2022
GMC SAVANA2022
GMC SIERRA 15002019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002022 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 35002022 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI2015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
GMC TERRAIN2022
GMC TERRAIN NA2022 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON2015, 2016, 2017
GMC YUKON2019
GMC YUKON2022
GMC YUKON XL2015, 2016, 2017
GMC YUKON XL2019
GMC YUKON XL2022

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

Recalls for the same vehicles and component
23V0130002023-01-19. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP:CONTROL/DRIVE MODULE
21V7390002021-09-23. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP:CONTROL/DRIVE MODULE
19V8370002019-11-21. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

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
15NA0672024-02-12. Service bulletin. Information on Ordering New Delphi Style Fuel Pump
15NA0672023-12-11. Service bulletin. Information on Ordering New Delphi Style Fuel Pump
20NA1102022-06-21. Service bulletin. This service bulletin provides service information for a DEF pump that is unable to build pressure after replacement.
20NA1102020-11-30. Service bulletin. This informational bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump.
PIE05232019-07-01. Service bulletin. This engineering informational bulletin is requesting information for vehicles that has had the fuel injection pump replaced and is still within warranty.
PIP55962018-11-13. Service bulletin. This Preliminary information communicates that when removing the fuel line jumper hose care should be taken to be sure the line is reinstalled correctly to avoid a no/low fuel pressure situation.
17NA4022018-06-04. Service bulletin. This technical bulletin provides a procedure to replace relays that may be sticking in cold regions.
15-NA-0672018-05-21. Service bulletin. This informational bulletin provides information for dealership personnel and technicians that when replacing the fuel pump, the vehicle should be serviced with the same style high pressure fuel pipe and SIDI fuel pump it was equipped with.
17NA3352018-04-23. Service bulletin. This technical bulletin provides a procedure to replace the fuel pump to correct the MIL concerns.
PIP5411F2017-11-14. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that may have hesitation or a stalling condition while in ambient temperatures 100 degrees or higher. Technician may find Diagnostic Trouble Codes P2635 and or P018B set. The dealer is advised to replace the in tank fuel pump module assembly to correct the condition.