1999 Hummer H1 Recalls
No NHTSA recalls on record for the 1999 Hummer H1. 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.
“Consumer inquired as to why there was not a recall on the defective #8 cylinder of the 1999 hi hummer.*mr the #8 cylinder cracked resulting in total engine failure at 14000 miles. *nm”
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL, FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 1999 Hummer H1 as of July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page contains ads and affiliate links. Full methodology.