1991 GMC B6 Medium Duty Recalls
No NHTSA recalls on record for the 1991 GMC B6 Medium Duty. That means NHTSA has no open safety campaign for this vehicle — it does not guarantee the absence of problems. Owners have filed 1 complaint with NHTSA, most often about the engine and engine cooling. Last updated July 5, 2026.
Complaints by component
What owners report
Verbatim reports filed with NHTSA, lightly edited for readability and with personal information removed.
“The vehicle experienced engine failure for the second time. He stated that the first time was 11/99. The engine had 118,000 miles. He states he asked the manufacturer for assistance and they declined because of a technicality. He also stated that the manufacture should replace his engine because…”
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL, FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 1991 GMC B6 Medium Duty as of July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page contains ads and affiliate links. Full methodology.