TSB 652.20 — Chevrolet and GMC Software update
652.20 is a software update on file with NHTSA for 2 Chevrolet and GMC models, 2025 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. •Fixes to help prevent battery drain. •Fixes to responsiveness issues with Wi-Fi, Navigation, Super Cruise, and OnStar. •Improvements to software updates. •Improvements to OnStar emergency calls. •Fixes to address cellular connectivity issues. During the update process, your…
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Worth checking your VIN against. 652.20 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 652.20 names
| Vehicle | Model years |
|---|---|
| Chevrolet Equinox | 2025 |
| GMC Terrain | 2025 |
Every document filed under 652.20
| Document ID | Filed | Type |
|---|---|---|
| 652.20 | September 16, 2025 | Software update |
Questions buyers ask
What is TSB 652.20?
652.20 is a software update filed with NHTSA by Chevrolet and GMC, covering 2 Chevrolet and GMC models across the 2025 model years. NHTSA's summary reads: •Fixes to help prevent battery drain. •Fixes to responsiveness issues with Wi-Fi, Navigation, Super Cruise, and OnStar. •Improvements to software updates. •Improvements to OnStar emergency calls. •Fixes to address cellular connectivity issues. During the update process, your…
Which vehicles does 652.20 cover?
NHTSA's file names Chevrolet Equinox (2025); GMC Terrain (2025). 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 652.20 a recall, and is the repair free?
652.20 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 652.20?
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 652.20, 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 652.20. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.