2010 GMC Sierra — Full Specifications
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The 2010 GMC Sierra is a pickup offered with 5 engines (4.3L 6-cyl, 4.8L 8-cyl, 5.3L 8-cyl). Its most fuel-efficient configuration returns around 20 mpg (UK) / 17 mpg (US EPA) combined, with 17–26 mpg (UK) across all configurations. A hybrid version is also listed by EPA (6L 8-cyl), returning around 26 mpg (UK) combined. Owners often keep a GMC Sierra workshop manual to hand for servicing and repairs.
Related 2010 listings: GMC Sierra C15, GMC Sierra K15.
Full Specifications
| Engine (most efficient) | 4.3L 6-cyl |
|---|---|
| Engine options | 4.3L 6-cyl · 4.8L 8-cyl · 5.3L 8-cyl · 6L 8-cyl · 6.2L 8-cyl |
| Transmission (most efficient) | Automatic 4-spd |
| Fuel Type | Regular Gasoline |
| Powertrain | Conventional |
| Drive | Rear-Wheel Drive |
| Body Style | Pickup |
| Fuel Economy (UK) | 20 combined / 18 urban / 24 extra-urban mpg |
| Fuel Economy (US EPA) | 17 combined / 15 city / 20 highway mpg |
| CO₂ Emissions | 325 g/km |
| EPA Est. Annual Fuel Cost | $3,950 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 11 configurations for the 2010 GMC Sierra across 5 engines (4.3L 6-cyl, 4.8L 8-cyl, 5.3L 8-cyl, 6L 8-cyl). Combined fuel economy ranges from 14 to 22 mpg (US), or 17 to 26 mpg (UK), depending on engine, transmission and drive. The headline figures at the top of this page describe the most fuel-efficient configuration.
| Engine | Transmission | Drive | MPG (UK) | MPG (US) | CO₂ g/km | Fuel cost / yr |
|---|---|---|---|---|---|---|
| 4.3L 6-cyl | Automatic 4-spd | 4-Wheel Drive | 18 | 15 (14/18) | 368 | $4,450 |
| 4.3L 6-cyl | Automatic 4-spd | Rear-Wheel Drive | 20 | 17 (15/20) | 325 | $3,950 |
| 4.8L 8-cyl | Automatic 4-spd | 4-Wheel Drive | 18 | 15 (13/18) | 368 | $4,450 |
| 4.8L 8-cyl | Automatic 4-spd | Rear-Wheel Drive | 19 | 16 (14/19) | 345 | $4,200 |
| 5.3L 8-cyl | Automatic 6-spd | 4-Wheel Drive | 20 | 17 (15/21) | 325 | $3,950 |
| 5.3L 8-cyl | Automatic 6-spd | Rear-Wheel Drive | 20 | 17 (15/21) | 325 | $3,950 |
| 6L 8-cyl (Hybrid) | Automatic (variable gear ratios) | 4-Wheel Drive | 25 | 21 (21/22) | 263 | $3,200 |
| 6L 8-cyl (Hybrid) | Automatic (variable gear ratios) | Rear-Wheel Drive | 26 | 22 (21/22) | 251 | $3,050 |
| 6.2L 8-cyl | Automatic 6-spd | 4-Wheel Drive | 17 | 14 (12/19) | 394 | $4,800 |
| 6.2L 8-cyl | Automatic 6-spd | All-Wheel Drive | 17 | 14 (12/19) | 394 | $4,800 |
| 6.2L 8-cyl | Automatic 6-spd | Rear-Wheel Drive | 18 | 15 (13/19) | 368 | $4,450 |
MPG (US) shows combined, with city/highway in brackets. Highlighted row = the configuration used for the headline figures. Source: US EPA fueleconomy.gov.
Owner Essentials for the 2010 GMC Sierra
Running Costs: 2010 GMC Sierra
Covering around 8,000 miles a year in a 2010 GMC Sierra at 20 mpg combined, expect roughly 1,818 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $3,950 a year in fuel for the most efficient configuration (15,000 miles, national average prices). Work out exact fuel costs with the fuel cost calculator on 247Calculators.
Convert between MPG and L/100km with the unit converters on 247QuickTools. Not sure what tyre size fits? 247TyreCheck explains tyre sizing.
Only need this car occasionally? See our buy vs rent comparison.
2010 GMC Sierra Safety Ratings (NHTSA)
No NHTSA crash-test rating is on record for this model year. The NHTSA rates only a subset of vehicles each year; you can browse every rated vehicle on our NHTSA Safety Ratings hub.
Recalls & Owner Complaints (NHTSA)
NHTSA lists no safety recall campaigns for the 2010 GMC Sierra as of 6 October 2026. Recalls can be issued years after a model is sold, so it is still worth checking your own VIN.
Owners have filed 229 complaints with NHTSA about the 2010 GMC Sierra. The most-reported areas are Air bags (90), Unspecified (64), Structure (46). Complaints include 5 reported crashes, 4 reported fires, 14 reported injuries. That is well below the median of 479 complaints across the 17 GMC Sierra model years in our data.
Used-buyer checklist for the 2010 GMC Sierra
Based on where NHTSA recalls and owner complaints cluster for this model year, these are the areas worth checking before you buy:
- Air bags (90 owner complaints) — Confirm any air bag inflator or module recalls were completed — enter the VIN at nhtsa.gov/recalls.
- Body structure (46 owner complaints) — Inspect for corrosion and for subframe or body-panel damage, especially underneath.
- Electrical system (15 owner complaints) — Test every switch, window, light and warning lamp on a test drive, and ask about battery or alternator replacements.
Source: US NHTSA recall and consumer-complaint databases, retrieved 6 October 2026. Complaints are unverified owner reports, not confirmed defects. Check any vehicle by VIN at nhtsa.gov/recalls, and see our guide to checking a used car for recalls.
How It Compares
How does the GMC Sierra compare to similar pickups? For context, pickups in our database average around 25 mpg (UK) combined — this model's 20 mpg figure is 5 mpg below that average. Its 325 g/km CO₂ figure is 42 g/km higher than the 283 g/km average for pickups on this site. This comparison is based on 264 pickups in our dataset.
GMC models in our database average about 26 mpg (UK) combined on their most efficient configuration; the 2010 GMC Sierra's 20 mpg is 6 mpg below that make average. Its 325 g/km CO₂ figure is 53 g/km higher than the 272 g/km GMC average.
Of the 17 GMC Sierra model years we cover, the 2010 ranks 16th for combined fuel economy on its best configuration (20 mpg UK combined, against a high of 31 mpg). See every GMC Sierra year side by side.
Last updated: · Data: US EPA (fueleconomy.gov) and NHTSA safety ratings 18 July 2026; NHTSA recalls and complaints 6 October 2026; Wikidata & curated EU catalogue 18 July 2026; European generation and engine data from Wikipedia 7 October 2026
Vehicle data sourced from manufacturer specifications. Always verify with your vehicle handbook or a qualified mechanic. This is a reference tool, not professional advice.
Recommended Accessories for the 2010 GMC Sierra
Frequently Asked Questions
What engine does the 2010 GMC Sierra have?
EPA lists 5 engines for the 2010 GMC Sierra: 4.3L 6-cyl, 4.8L 8-cyl, 5.3L 8-cyl, 6L 8-cyl, 6.2L 8-cyl. The most fuel-efficient configuration pairs the 4.3L 6-cyl with a automatic 4-spd.
What is the fuel economy of the 2010 GMC Sierra?
The most efficient configuration returns around 20 mpg (UK) combined, or 17 mpg on the US EPA cycle. Across all configurations the UK combined figure runs from 17 to 26 mpg. The hybrid version returns around 26 mpg (UK) combined.
How much does the 2010 GMC Sierra cost to fuel per year?
The US EPA estimates about $3,950 a year in fuel for the most efficient configuration, based on 15,000 miles of mixed driving and national average fuel prices. Your own cost will depend on mileage and local prices.
Does the 2010 GMC Sierra have any recalls?
NHTSA lists no safety recall campaigns for the 2010 GMC Sierra as of 6 October 2026. Recalls can be issued years after a model is sold, so it is still worth checking your own VIN.
What are the most common problems reported for the 2010 GMC Sierra?
Among the 229 owner complaints filed with NHTSA, the most-reported areas are Air bags (90 complaints), Unspecified (64 complaints), Structure (46 complaints). Complaints are unverified owner reports, not confirmed defects, and raw counts rise with how many cars were sold.
Is the GMC Sierra's fuel economy good for a pickup?
It returns around 20 mpg (UK) combined, against a same-body-style average of roughly 25 mpg among the pickups we track.