2026 Sierra 3500 HD AT4
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Available now
- On the lot and buyable now.
- Similar Sierra 3500 HD AT4s sell in a median of 14 days (366 recent sales) — these move fast.
- 566 of 566 listed nationwide are buyable right now.
Negotiation Signal
- On the lot 30 days — longer than 84% of Sierra 3500 HD listings in CA.
- Price is down $878 from its original list of $86,901.
Time on the lot and prior price cuts are real negotiating leverage — a dealer carrying a slow-moving unit is more likely to deal.
What to aim for
~$82,698
- Comparable Sierra 3500 HDs (6) average $5,081 below MSRP — about $82,698 for this trim.
- Listed $3,325 above that, so there's room to negotiate toward $82,698.
- It's sat 30 days (longer than 84% locally) — that strengthens your hand.
A data-driven starting point from comparable listings and public incentives — not an appraisal. Dealer fees, trade-in, and which programs you qualify for will move the real out-the-door number.
Deal Analysis
This 2026 Sierra 3500 HD is listed at $86,023, which is $1,756 below its MSRP of $87,779 — a notable discount. Compared to similar vehicles nationally, this one is priced $3,325 higher than the market average. It has been on the dealer’s lot for 30 days. Located at COSTA MESA GMC in Costa Mesa, CA.
Price Breakdown
Listed price. A dealer's real offer can be lower (incentives, financing or trade-in conditions) or higher (added fees) — always ask for the out-the-door price.
Details
Delivery Pipeline
Factory Options
- — GOOSENECK/5TH WHEEL PACKAGE$545
- — AT4 PREFERRED PACKAGE$350
- — 3 YEARS, SIRIUSXM$299
- — HIGH IDLE SWITCH$200
Specifications
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Est. Monthly Payment
$1,515/mo
Estimate only, based on the advertised price. Does not include taxes, dealer fees, or insurance.
Save $9,553 on one of 15 comparable 2026 Sierra 3500 HD AT4 about 1,380 miles away. The lowest is $76,470 in Aurora, MO — real leverage when you ask COSTA MESA GMC to match it. See that listing →
Comparable Vehicles
Avg markup: -$5,081
30 days on lot