Service bulletins for the 1991 GMC Suburban
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
4 on file from NHTSA, as of 2026-10-19.
By type
By component
| 990730016A | 2004-07-13. Service bulletin. POWER TRAIN. DIAGNOSTIC INFORMATION FOR INTERMITTENT TRANSMISSION DOWNSHIFT, SLIP, BUSY/CYCLING TCC OR NOISY COOLING FAN. *TT |
|---|---|
| 020730024A | 2002-10-11. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT. DIAGNOSIS OF CRACKED OR BROKEN TRANSMISSION CASE. *TT 2006 AND PRIOR CARS AND LIGHT DUTY TRUCKS. *TT |
| 376105 | 1995-11-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. COLD ENGINE KNOCK. *TW |
| 376602A | 1995-03-06. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. NEW CAST IRON EXHAUST MANIFOLD AND STAINLESS STEEL GASKET TO CORRECT ENGINE NOISE CONDITION. *TW |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.