GMC Cost to Own
By CarWhere Research · Updated
Over 5 years and 75,000 miles, GMC models use from about $19,172 (Sierra 1500) to $19,172 (Sierra 1500) in fuel at EPA ratings and EIA national prices. Insurance at the national average adds $6,410; CarWhere's depreciation study doesn't cover these models yet.
GMC models compared
5 years, 75,000 miles, bought new. Total = depreciation + fuel + national-average insurance ($6,410).
| Model | Depreciation | Fuel / energy | 5-yr total |
|---|---|---|---|
| Sierra 1500 | $34,953 | $19,172 | $60,535 |
— = no citable figure. Insurance varies by driver, location and coverage; see car insurance cost by state.
GMC maintenance schedule
GMC's published oil-change interval: condition-based: GM Engine Oil Life System. GMC First Service Visit: first scheduled service visit for new GMC owners. We list the schedule rather than a dollar figure because GMC doesn't publish service prices.
GMC First Service Visit
Term: First scheduled service visit for new GMC owners (at a participating dealer); no time window stated on this page
Covers: Oil and oil filter change, four-tire rotation, Multi-Point Vehicle Inspection
Source: GMC Certified Service — Maintenance (first service visit)
Oil changes
Normal: Condition-based: GM Engine Oil Life System. Check oil and oil-life % every 7,500 mi; change oil/filter when CHANGE ENGINE OIL SOON appears (within 600 mi). Change at least once a year regardless. If reset accidentally, service within 3,000 mi of last service.
Severe or special conditions: Same system; under severe use the indicator may call for a change before 7,500 mi.
Source: 2026 GMC Sierra/Sierra Denali 1500 Owner's Manual — Maintenance Schedule (GM-hosted PDF)
More GMC research
Frequently asked questions
How much does it cost to own a GMC?
Over 5 years and 75,000 miles, GMC models use from about $19,172 (Sierra 1500) to $19,172 (Sierra 1500) in fuel at EPA ratings and EIA national prices. Insurance at the national average adds $6,410; CarWhere's depreciation study doesn't cover these models yet.
Is GMC maintenance expensive?
GMC's published oil-change interval: condition-based: GM Engine Oil Life System. GMC First Service Visit: first scheduled service visit for new GMC owners. We list the schedule rather than a dollar figure because GMC doesn't publish service prices.
Sources and method
Each model line follows the same formula as the model pages: depreciation from CarWhere’s used-market study, fuel from EPA ratings × EIA national prices, insurance from NAIC’s national average. Maintenance comes from the manufacturer’s own schedule.
- CarWhere car depreciation by model study — CarWhere Research (data as of 2026-10-25)
- Fuel economy data (vehicles.csv) — U.S. EPA / DOE, fueleconomy.gov
- Weekly U.S. retail gasoline and diesel prices — U.S. Energy Information Administration (week of November 2, 2026)
- Auto Insurance Database Report (average expenditure) — NAIC, via CarWhere state study (2023 data)
- 2026 GMC Sierra/Sierra Denali 1500 Owner's Manual — Maintenance Schedule (GM-hosted PDF) — GMC
- GMC Certified Service — Maintenance (first service visit) — GMC