TSB N23-242899 — Chevrolet and GMC Software update
N23-242899 is a software update on file with NHTSA for 2 Chevrolet and GMC models, 2024 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. Certain vehicles may have a Brake System Control Module (BSCM) that does not correctly set a Diagnostic Trouble Code (DTC) or illuminate the Malfunction Indicator Lamp (Check Engine Light) if certain system faults with the potential to affect the vehicle’s emissions control…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Worth checking your VIN against. N23-242899 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 N23-242899 names
| Vehicle | Model years |
|---|---|
| Chevrolet Silverado 1500 | 2024 |
| GMC Sierra 1500 | 2024 |
Every document filed under N23-242899
| Document ID | Filed | Type |
|---|---|---|
| N23-242899 | February 17, 2025 | Software update |
Questions buyers ask
What is TSB N23-242899?
N23-242899 is a software update filed with NHTSA by Chevrolet and GMC, covering 2 Chevrolet and GMC models across the 2024 model years. NHTSA's summary reads: Certain vehicles may have a Brake System Control Module (BSCM) that does not correctly set a Diagnostic Trouble Code (DTC) or illuminate the Malfunction Indicator Lamp (Check Engine Light) if certain system faults with the potential to affect the vehicle’s emissions control…
Which vehicles does N23-242899 cover?
NHTSA's file names Chevrolet Silverado 1500 (2024); GMC Sierra 1500 (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 N23-242899 a recall, and is the repair free?
N23-242899 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 N23-242899?
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 N23-242899, 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 N23-242899. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.