Is Your GM Truck or SUV Experiencing Frustrating Engine Problems?
If you’re dealing with a 2009-2010 Escalade, Silverado, or another GM vehicle that’s suddenly stalling, running rough, or refusing to start, the Engine Control Module (ECM) is a very likely culprit. In my 20+ years in the shop, I’ve seen countless cases where a failing ECM causes a cascade of confusing issues, leaving owners and even some mechanics chasing their tails. A customer’s 2009 Sierra 2500 came in last week with a no-start condition and a dashboard full of warning lights. After confirming fuel and spark were present, we traced the fault directly to an internal failure in the ECM. It’s a common weak point on these otherwise solid vehicles.
The Direct Solution: A VIN-Programmed, Ready-to-Install ECM
Forget the dealership hassle and high costs. This Engine Control Module, part number 12625455, is the straightforward, reliable fix you need. We take the guesswork out of the repair. Simply provide us with your vehicle’s VIN during checkout, and our technicians will program the module with the latest, most stable software directly from GM. It arrives at your door ready for a simple, plug-and-play installation.
Common Symptoms of a Failing GM ECM:
- ✔ Check Engine Light is on with multiple, often unrelated, trouble codes.
- ✔ Engine cranks but will not start.
- ✔ Severe performance issues, such as poor acceleration, misfires, or rough idling.
- ✔ Decreased fuel economy.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Intermittent stalling for no apparent reason.
Expert Pro Tip From a 20-Year Veteran Technician
Before plugging in your new ECM, take a moment to inspect the harness connectors for any signs of corrosion, moisture, or bent pins. On trucks and vans especially, these connectors are exposed to the elements. A poor connection can mimic the symptoms of a faulty module and prevent the new one from working correctly. Use a small pick to gently straighten any bent pins and a quality electronics cleaner to ensure a perfect, clean contact.
Plug-and-Play Installation: No Dealer Visit Required
You can perform this replacement right in your own driveway with basic hand tools. Our VIN programming service means you don’t need a trip to the dealer for expensive flashing or key relearning procedures.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery.
- Locate the ECM: On most compatible trucks and SUVs (like the Escalade, Tahoe, Silverado, Sierra), the ECM is found in the front left (driver’s side) of the engine compartment. On vans (Express, Savana), it’s typically in the left rear of the engine bay.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be released. Then, unbolt the old module from its bracket.
- Install the New Module: Bolt the new ECM into place and securely reconnect the wiring harnesses. You should hear a ‘click’ as they lock in.
- Reconnect Power: Re-attach the negative battery terminal. The vehicle is now ready to start.
Guaranteed Compatibility and Performance
This module is a direct replacement for part numbers 12625455 and 12629009. It’s designed to restore the original performance and reliability of a massive range of GM vehicles, from the powerful 6.2L in the Escalade to the workhorse 6.0L in Silverado and Express vans, and even V6 engines in cars like the Impala and G6. By providing your VIN, you guarantee that the software loaded onto your 2009-2010 Escalade Engine Computer is precisely matched to your vehicle’s specific options and build sheet, ensuring seamless operation of the engine, transmission, and all related systems.