2003 GMC Sierra Engine Computer ECM PCM 12576106 - Programmed To Your VIN

About This Product

Is your 2003 GMC Sierra acting up with engine problems?

This replacement ECM (engine control module) might be exactly what you need.

Part number 12576106 fits 2003 Sierra 1500, 2500, and 3500 models with 4.3L, 4.8L, 5.3L, or 6.0L engines.

The best part?

It comes programmed to your specific VIN with the latest software updates - just provide your vehicle identification number after purchase.

Installation is basically plug and play, but there are a couple things to know: you might need to perform an anti-theft relearn (or the truck won't start) and possibly a crankshaft variation relearn (or you'll get a check engine light with code P0315).

You'll need a scan tool capable of these procedures, or just take it to a repair shop to handle it quickly.

No core charge means you keep your old ECM, which is nice if you want to try to repair it or keep as backup.

They ship same day if ordered before 2 PM EST Monday through Friday.

If your Sierra is having mysterious engine issues, stalling, or running rough, a failing ECM is a common culprit, and this programmed replacement gets you back on the road without dealership prices.

Product Information