TSB 376602A — Chevrolet Service bulletin
376602A is a service bulletin on file with NHTSA for the Chevrolet Suburban, 1990–1993 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. NEW CAST IRON EXHAUST MANIFOLD AND STAINLESS STEEL GASKET TO CORRECT ENGINE NOISE CONDITION.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years 376602A names
| Vehicle | Model years |
|---|---|
| Chevrolet Suburban | 1990, 1991, 1992, 1993 |
Every document filed under 376602A
| Document ID | Filed | Type |
|---|---|---|
| 376602A | January 1, 1995 | Service bulletin |
What 376602A covers
Engine — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB 376602A?
376602A is a service bulletin filed with NHTSA by Chevrolet, covering the Chevrolet Suburban across the 1990–1993 model years. NHTSA's summary reads: NEW CAST IRON EXHAUST MANIFOLD AND STAINLESS STEEL GASKET TO CORRECT ENGINE NOISE CONDITION.
Which vehicles does 376602A cover?
NHTSA's file names Chevrolet Suburban (1990–1993). 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 376602A a recall, and is the repair free?
No. 376602A 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 376602A?
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 376602A, 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 376602A. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.