TSB N24-245213 — Chevrolet and GMC Software update
N24-245213 is a software update on file with NHTSA for 4 Chevrolet and GMC models, 2023–2024 model years, filed and re-filed as 3 documents. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Certain 2023-2024 model year Chevrolet Colorado / Silverado 1500 and GMC Canyon / Sierra 1500 vehicles equipped with a 2.7L engine (RPO L3B), may have an Engine Control Module (ECM) that does not sufficiently control fuel injector flow rate under certain driving conditions. This…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Worth checking your VIN against. N24-245213 is filed as a software update, which unlike an ordinary bulletin can mean free or reimbursed work when a vehicle qualifies. Ask a dealer using the document ID below, and check open recalls separately at nhtsa.gov/recalls.
Vehicles and model years N24-245213 names
| Vehicle | Model years |
|---|---|
| Chevrolet Colorado | 2023, 2024 |
| Chevrolet Silverado 1500 | 2023, 2024 |
| GMC Canyon | 2023, 2024 |
| GMC Sierra 1500 | 2023, 2024 |
Every document filed under N24-245213
Manufacturers re-issue a bulletin as the repair changes, and file separate copies for technicians and for owners. All of them carry the same number.
| Document ID | Filed | Type |
|---|---|---|
| N24-245213 | September 3, 2025 | Software update |
| N24-245213 | March 4, 2025 | Software update |
| N24-245213 | March 3, 2025 | Software update |
Questions buyers ask
What is TSB N24-245213?
N24-245213 is a software update filed with NHTSA by Chevrolet and GMC, covering 4 Chevrolet and GMC models across the 2023–2024 model years. NHTSA's summary reads: Certain 2023-2024 model year Chevrolet Colorado / Silverado 1500 and GMC Canyon / Sierra 1500 vehicles equipped with a 2.7L engine (RPO L3B), may have an Engine Control Module (ECM) that does not sufficiently control fuel injector flow rate under certain driving conditions. This…
Which vehicles does N24-245213 cover?
NHTSA's file names Chevrolet Colorado (2023–2024); Chevrolet Silverado 1500 (2023–2024); GMC Canyon (2023–2024); GMC Sierra 1500 (2023–2024). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB N24-245213 a recall, and is the repair free?
N24-245213 is filed as a software update, not a recall — but this is the kind of communication that can mean free or reimbursed work if your VIN qualifies. Take the number to a dealer and ask. Recalls are separate and always free; check yours by VIN at nhtsa.gov/recalls.
How do I get the full text of N24-245213?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under N24-245213, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under N24-245213. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.