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GM Parts for Chevrolet, GMC, Buick and Cadillac

GM parts fit Chevrolet, GMC, Buick and Cadillac vehicles. Match every part to your VIN.

Updated . Edited by: Ilyass Ben Hakim.

Where to buy

GM runs its own online parts store at gmparts.com. GM dealer parts counters also sell and order parts. Auto parts chains stock many ACDelco lines.

Professional insight

Parts counter staff look up GM parts by VIN, not model year. Mid-year changes are common.

  • Check the RPO codes on the glovebox sticker.
  • Note superseded part numbers before comparing listings.
  • Ask if a core charge applies on rebuilt units.
  • Electrical modules may need dealer programming after install.

Check the label

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Types

GM part lines
LineWhat it isTypical use
GM Genuine PartsSame parts used at the factoryExact fit and dealer repairs
ACDelco GoldOE quality parts backed by GMRepairs on newer vehicles
ACDelco SilverLower cost line for GM and other makesOlder vehicles on a budget
Used or salvagePulled from wrecked vehiclesBody panels and rare parts

Red flags

  • Genuine GM claims on parts priced far below dealer cost.
  • Blurry or missing part numbers in listing photos.
  • Boxes with mismatched logos or poor printing.
  • Sellers who will not confirm fitment by VIN.

Ways to save

  • Compare the dealer price with the GM online store.
  • Use ACDelco Silver for non critical parts on older cars.
  • Return cores to recover the deposit.
  • Buy filters and wipers in multi packs.

Common questions

Is ACDelco a real GM brand?
Yes. ACDelco is GM's own parts brand, sold for GM and other vehicles.
Where do I find my VIN?
Check the driver side windshield corner or your registration.
Do aftermarket parts void my warranty?
Not by themselves. Damage caused by a faulty part may not be covered.