EXPERT REVIEW · HEAVY-DUTY TRUCK

2026 GMC Sierra HD review

GMC Sierra HD: capability first, comfort close behind. Illustrative review

8.8/10 OffLot expert score

The 2026 GMC Sierra HD sits near the top of its class. Strong tow and payload ratings for the class; standard driver-assist suite. Fuel economy drops sharply when towing and some cabin plastics feel basic on base trims, so test the trim you'd actually buy. Starting around $60,000, it lines up with most direct rivals.

What's good

  • Strong tow and payload ratings for the class
  • Standard driver-assist suite
  • Cab is quiet at highway speed

What to check

  • Fuel economy drops sharply when towing
  • Some cabin plastics feel basic on base trims

Best for: Owners who tow or haul every week. Starting MSRP: $60,000.

Owner reviews · 4.7 of 5 from 3 owners

★★★★☆Priya K. · Phoenix, AZ · 24 months owned
Happy after a year

The towing stability is the standout. My only gripe is the fuel bill when towing, which I knew going in.

★★★★★Victor L. · Portland, OR · 18 months owned
Would buy again

Bought it for the weekend hauling and a daily commute and it has handled everything so far. Fuel economy has been close to the sticker in mixed driving.

★★★★★Marcus G. · Tampa, FL · 18 months owned
Happy after a year

Replaced an older GMC with this one. Big step up in towing stability; I'd like a little more rear-seat room.

Price trend · used GMC Sierra HD, 12 months

$36.9k$37.9k$39.0k$40.1k$41.2kNov 25Jan 26Mar 26May 26Jul 26Sep 26

Average used asking price in the OffLot demo index: $38,975 · -3.11% last 30 days · +4.03% year over year.

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