2021 GMC Sierra 1500 engine computer — Diesel Control, (beside 12v battery), (glow plug control) price snapshot
- Low
- $50
- Average
- $158
- High
- $322
Year & trim-specific price guide
Used 2021 GMC Sierra 1500 Engine Computer — Diesel Control, (beside 12v battery), (glow plug control) prices
Trim-specific pricing for the Diesel Control, (beside 12v battery), (glow plug control) variant of the 2021 GMC Sierra 1500 engine computer, built from 48 real salvage yard listings with condition grade detail.
Price summary
A used 2021 GMC Sierra 1500 engine computer (Diesel Control, (beside 12v battery), (glow plug control)) costs $50 to $322, with a median asking price of $146. Based on 48 priced salvage yard listings across the US, updated Aug 31, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$125
Grade B (good)$183
USD
Condition comparison
Price by part grade
Grade AClean / low wear$80–$20017 listings
Grade BStandard used$65–$32228 listings
Grade CVisible wearUpdating
Grade XUngraded$50–$1453 listings
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $80–$200 | 17 | |
| Grade BStandard used | $65–$322 | 28 | |
| Grade CVisible wear | Updating | — | |
| Grade XUngraded | $50–$145 | 3 |
Median by grade
Grade price comparison
Grade A$125
Grade B$183
Ungraded$107
Median asking price by seller-reported condition grade · $50–$322 overall range
Trim-specific context
How does the Diesel Control, (beside 12v battery), (glow plug control) compare?
This pricing covers the Diesel Control, (beside 12v battery), (glow plug control) variant of the 2021 GMC Sierra 1500 engine computer, based on 48 priced listings. Its $146 median is 9% below the 2021 GMC Sierra 1500 engine computer overall median of $160.
There are 7 other engine computer variants available for the 2021 GMC Sierra 1500.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Same trim, other years
Diesel Control, (beside 12v battery), (glow plug control) in other model years
Same year, other trims
What other 2021 GMC Sierra 1500 engine computer variants are available?
Electronic Control Module, (LH front engine compartment), 3.0L
48 listings$145$61 – $440Electronic Control Module, (LH front engine compartment), 4.3L
47 listings$150$41 – $327Electronic Control Module, (LH front engine compartment), 2.7L
47 listings$160$50 – $250Electronic Control Module, (LH front engine compartment), 5.3L, ID 12711867
47 listings$150$41 – $327Electronic Control Module, (LH front engine compartment), 6.2L, ID 12711867
47 listings$150$41 – $327Electronic Control Module, (LH front engine compartment), 5.3L, ID 12711852
36 listings$204$71 – $204Electronic Control Module, (LH front engine compartment), 6.2L, ID 12711852
36 listings$204$71 – $204Back to full guide
2021 GMC Sierra 1500 engine computer — all trims
Common questions
2021 GMC Sierra 1500 engine computer (Diesel Control, (beside 12v battery), (glow plug control)) FAQ
How much is a used 2021 GMC Sierra 1500 engine computer (Diesel Control, (beside 12v battery), (glow plug control))?
Based on 48 priced salvage-yard listings, a used 2021 GMC Sierra 1500 engine computer in the Diesel Control, (beside 12v battery), (glow plug control) variant lists between $50 and $322, with a median asking price of $146.
Which years use the Diesel Control, (beside 12v battery), (glow plug control) engine computer?
The Diesel Control, (beside 12v battery), (glow plug control) variant appears in model years 2020, 2021, 2022. Prices and availability may differ by year.