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 he said that when his original engine was replace the mechanic used parts from the old engine.
The worst 1991 GMC B6 Medium Duty problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Engine1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Engine1
Recalls
No recalls on record for this model year.
Technical service bulletins for the 1991 GMC B6 Medium Duty 1
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
What 1991 GMC B6 Medium Duty owners say
Most recent owner complaints, unedited.
Compare the 1991 GMC B6 Medium Duty
Other model years
19911997
Questions about the 1991 GMC B6 Medium Duty
Is the 1991 GMC B6 Medium Duty reliable?
Owners have filed 1 complaint about the 1991 GMC B6 Medium Duty, close to a typical B6 Medium Duty model year.
What is the most common problem with the 1991 GMC B6 Medium Duty?
Engine and cooling, with 1 complaint.
How many recalls does the 1991 GMC B6 Medium Duty have?
No recalls on record.
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