TSB PIT6300C — Chevrolet and GMC Service bulletin
PIT6300C is a service bulletin on file with NHTSA for 5 Chevrolet and GMC models, 2023–2026 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. This Preliminary information communicates to the technician on the a potential cause for Buzz/rattle/vibration/ from the passenger side when the vehicle is under light load, with a 3.0L LZ0 Engine. It also addresses the potential for a slow/no crank or not charging.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years PIT6300C names
| Vehicle | Model years |
|---|---|
| Chevrolet Silverado 1500 | 2023, 2024, 2025, 2026 |
| Chevrolet Suburban | 2025, 2026 |
| Chevrolet Tahoe | 2025, 2026 |
| GMC Sierra 1500 | 2023, 2024, 2025, 2026 |
| GMC Yukon | 2025, 2026 |
Every document filed under PIT6300C
| Document ID | Filed | Type |
|---|---|---|
| PIT6300C | July 24, 2026 | Service bulletin |
Questions buyers ask
What is TSB PIT6300C?
PIT6300C is a service bulletin filed with NHTSA by Chevrolet and GMC, covering 5 Chevrolet and GMC models across the 2023–2026 model years. NHTSA's summary reads: This Preliminary information communicates to the technician on the a potential cause for Buzz/rattle/vibration/ from the passenger side when the vehicle is under light load, with a 3.0L LZ0 Engine. It also addresses the potential for a slow/no crank or not charging.
Which vehicles does PIT6300C cover?
NHTSA's file names Chevrolet Silverado 1500 (2023–2026); Chevrolet Suburban (2025–2026); Chevrolet Tahoe (2025–2026); GMC Sierra 1500 (2023–2026); GMC Yukon (2025–2026). 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 PIT6300C a recall, and is the repair free?
No. PIT6300C is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of PIT6300C?
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 PIT6300C, 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 PIT6300C. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.