Certain units of the 2023 through 2024 Chevy Silverado 1500 pickup motivated by the turbocharged 2.7L I4 L3B gasoline engine are included in a new GM Service Update containing a fix available for a fuel injector flow rate problem.
The Engine Control Module (ECM) of the affected Chevy Silverado units is incorrectly programmed, per Service Update N242452130. This could potentially lead to improper fuel flow rate during certain types of driving.
As a reminder, the turbocharged 2.7L I4 L3B engine involved in the Service Update develops 310 horsepower and 430 pound-feet of torque in the 2023 and 2024 Chevy Silverado 1500.
The exact number of affected units is currently unclear. GM instructs dealership service to apply the available fix to any vehicles still in stock and to affected Chevy Silverado trucks brought in by their owners for other services. The repair is offered free of charge to current owners of the vehicles through March 31st, 2040.
No components need to be replaced to repair the fuel injector flow rate. To calibrate the flow rate correctly, the service personnel must reprogram the Engine Control Module with new settings. The whole process, including verifying the issue and reprogramming the ECM, takes about 30 minutes on average.
GM issued a very similar service update with an ECM fix for a fuel injector flow rate problem for 2019–2022 model-year Silverado 1500 models powered by the L3B engine. Service Update N242450631 called for the same fix in the earlier trucks.
Three other engine options for the affected model years, including the naturally aspirated 5.3L V8 L84 gasoline engine developing 355 horsepower and 383 pound-feet of torque, the naturally aspirated 6.2L V8 L87 gasoline engine rated at 420 horsepower and 460 pound-feet, and the 3.0L I6 LZ0 turbodiesel Duramax rated at 305 horsepower and 495 pound-feet, are not affected by the issue or included in the Service Update.
The Silverado utilizes the GM T1 platform for structure, while production takes place at the GM Silao Plant in Mexico, the GM Fort Wayne Assembly facility in Indiana, and the GM Oshawa Plant in Canada.
Comments
So if you don’t take your truck in for service you don’t get the fix??
10-4
🤷♂️
Doesn’t seem to be an issue or you’d get a CEL, and it be a recall. Might be an emissions thing with the upgraded output. I doubt you’ll notice anything other than maybe 1/4 an MPG improvement while towing? Last time I had to replace a control module I noticed my 09 5.3 had a newer engine calibration. Didn’t change a thing from a driving standpoint
“The 3.0L I6 LZ0 turbodiesel Duramax (is) not affected by the issue or included in the Service Update”
Which is good news. Get the flow rates wrong there and you’ll have all sorts of fun stuff, from emissions problems to holes burned in pistons.
Silverado 1500 pickup “MOTIVATED BY “by the turbocharged. Who is writing this crap, marketing?
Nothing gets fixed in a Dealership in 30 minutes.
Written by Pelosi