TowVerdict / 2026 GMC Sierra 3500HD

Can a 2026 GMC Sierra 3500HD tow a Bass boat (20ft) + trailer?

★ Official Verdict ★

Assuming the lowest-rated 2026 GMC Sierra 3500HD. Pick your engine for a real answer.

Conservative

Not even close.

Nothing about this is interesting. That's the point.

2026 GMC Sierra 3500HDTow capacity: 14,500 lbsBass boat (20ft) + trailerTypical load: 3,500 lbs

Oh, by the way

Oh, and — a brake controller. Most states legally require one at this weight. Trailer brake controller →
Transom straps — because a boat bouncing off the trailer is nobody's day. Transom tie-down straps →

Related checks

Estimates only. Check your door jamb sticker and owner's manual before towing anything.