WenmarOpen by Wenmar Pro

Service bulletin PIT5493B

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 id10163677
Published by NHTSA2019-08-12
Manufacturer's numberPIT5493B
Manufacturer's date2019-07-24
NHTSA componentFUEL SYSTEM, GASOLINE

NHTSA's summary

This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicles that may have a fuel gauge that does not read below half a tank. Technician will gain access to the fuel pump and inspect to see if the level sender contacting the side of the fuel tank. The fuel tank fuel pump module fuel level sensor will need to be replaced for this concern.

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

Vehicles listed
CHEVROLET COLORADO2015, 2016, 2017, 2018, 2019
GMC CANYON2015, 2016, 2017, 2018, 2019

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

Recalls for the same vehicles and component
20182892018-06-01. Fuel System
18V3580002018-05-31. 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
25-NA-0652025-04-24. Service bulletin. This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
05-06-04-022V2024-09-05. Service bulletin. This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles and the TOP TIER FUELS website URL.
18-NA-1032024-08-24. Service bulletin. This service bulletin provides service information for customer concerns of an in-tank fuel pump whining noise, engine hard to start and/or stalls and Malfunction Indicator Lamp (MIL) is illuminated that may be caused by gelling of fuel in cold temperatures.
16-NA-3832024-07-16. Service bulletin. This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
04-06-04-051I2024-07-16. Service bulletin. This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
22-NA-1932024-06-24. Service bulletin. This informational bulletin explains to the tech on where to look for a possible concern with the rockers causing the MIL to illuminate.
PIP5596A2024-04-15. 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.
22-NA-1932024-02-23. Service bulletin. This informational bulletin explains to the tech on where to look for a possible concern with the rockers causing the MIL to illuminate.
19-NA-0442024-02-21. Service bulletin. This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy.
14D1332024-02-12. Service bulletin. Special Return - Fuel Tank Module Kit: ACDelco Part Number M10256 (select date codes)