# Service bulletins for the 1990 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 bulletins from NHTSA, as of 2026-10-19.

- [990730016A](/bulletins/10007838.md), 2004-07-13, Service bulletin: POWER TRAIN. DIAGNOSTIC INFORMATION FOR INTERMITTENT TRANSMISSION DOWNSHIFT, SLIP, BUSY/CYCLING TCC OR NOISY COOLING FAN. \*TT
- [020730024A](/bulletins/634999.md), 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](/bulletins/39304.md), 1995-11-01, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. COLD ENGINE KNOCK. \*TW
- [376602A](/bulletins/39070.md), 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

JSON: [/v1/vehicles/1990_gmc_suburban/bulletins](/v1/vehicles/1990_gmc_suburban/bulletins)

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