SUVs & crossovers · 2002–2006
Chevrolet TrailBlazer EXT battery replacement.
We bring the right battery to your TrailBlazer EXT 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.
- 78battery group size, newest TrailBlazer EXTs
- Regular or AGMbattery type
- 30–60 minsame-day arrival
Which battery your TrailBlazer EXT takes
| Model years | Battery size | Cold-cranking amps | Type |
|---|---|---|---|
| 2002–2006 | Group 78 | 600–800 CCA | Regular or AGM |
From O'Reilly Auto Parts' catalog — the store we buy your battery from (checked on a 2004 4.2L TrailBlazer EXT). Some engines and trims differ, so we confirm the exact battery for your TrailBlazer EXT when you book and show you the price before we install it.
Where the battery is & what the swap involves
2002–2006 Chevrolet TrailBlazer EXT
Where it is: Under the hood, driver's side.
How it works
Book online and pay the service fee — your card is saved. We head to your TrailBlazer EXT, 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.
Chevrolet TrailBlazer EXT
Straight answers.
By O'Reilly's catalog, the Chevrolet TrailBlazer EXT takes — 2002–2006: Group 78 (600–800 CCA). Engines can differ, so we confirm the exact battery for your TrailBlazer EXT when you book, and you see the price before we install it.
The catalog lists regular batteries for every Chevrolet TrailBlazer EXT we cover; an AGM is an upgrade some owners choose for short trips and Oklahoma heat. For 2002–2006, regular and AGM both fit — we'll match what your TrailBlazer EXT came with unless you ask for the upgrade.
Under the hood, driver's side.
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Other suvs
Every vehicle → — don't see yours? We do almost every gas and diesel car, truck and SUV. Book it here.