Cars & sedans · 2005–2011

Cadillac STS battery replacement.

We bring the right battery to your STS and swap it where it's parked — at home, at work or in a parking lot, anywhere in the OKC metro and across Oklahoma. Same-day or scheduled.

  • 48battery group size, newest STSs
  • Regular or AGMbattery type
  • 30–60 minsame-day arrival
Cadillac STS

Which battery your STS takes

Model yearsBattery sizeCold-cranking ampsType
2005–2011Group 48750–800 CCARegular or AGM

From O'Reilly Auto Parts' catalog — the store we buy your battery from (checked on a 2008 3.6L STS). Some engines and trims differ, so we confirm the exact battery for your STS when you book and show you the price before we install it.

Where the battery is & what the swap involves

2005–2011 Cadillac STS

Where it is: Not under the hood — it's in the trunk, under the floor panel.

How it works

Book online and pay the service fee — your card is saved. We head to your STS, test the old battery, take it to the closest O'Reilly for the core exchange and buy the right new one at the store's walk-in price. Back at your car we charge the battery plus sales tax to your saved card, install it, test the charging system and email your receipt. Installation labor is covered for 90 days.

See the service fee · Areas we serve

Cadillac STS

Straight answers.

By O'Reilly's catalog, the Cadillac STS takes — 2005–2011: Group 48 (750–800 CCA). Engines can differ, so we confirm the exact battery for your STS when you book, and you see the price before we install it.

The catalog lists regular batteries for every Cadillac STS we cover; an AGM is an upgrade some owners choose for short trips and Oklahoma heat. For 2005–2011, regular and AGM both fit — we'll match what your STS came with unless you ask for the upgrade.

Not under the hood — it's in the trunk, under the floor panel. Wherever it is, we swap it where the car is parked.