Is Your Grand Cherokee Stalling, Running Rough, or Showing a Check Engine Light?
As a mechanic with over two decades of diagnostic experience, I’ve seen firsthand how a failing Engine Control Module (ECM) can turn a reliable Jeep into a source of constant frustration. If your 2005-2006 Grand Cherokee 3.7L is experiencing unpredictable behavior, from poor fuel economy to a complete no-start condition, the brain of your engine is often the culprit. You’re not just buying a part; you’re buying a solution to get your vehicle running correctly again, without the hassle and expense of a dealership visit.
The Simple, Reliable Fix for Complex Engine Problems
This isn’t just a replacement part; it’s a direct path to solving your vehicle’s issues. We handle the complex part for you. This module arrives at your door fully programmed to your vehicle’s specific VIN and mileage. This means no additional programming, no special tools, and no trip to the dealer. It’s designed to be a true plug-and-play component, restoring your Jeep’s factory performance and communication protocols right out of the box.
Expert Pro Tip: A Common Misdiagnosis
In my shop, I’ve seen countless owners replace multiple sensors (like the throttle position or crank sensor) trying to fix an intermittent issue, only to find the problem persists. Often, the root cause isn’t the sensor itself, but a failing driver or a weak 5-volt reference circuit inside the original ECM. Before you spend more time and money on sensors, consider if the computer controlling them is the actual point of failure. This is a classic symptom that our pre-programmed 2005-2006 Grand Cherokee ECM is designed to solve.
Symptoms of a Failing 2005-2006 Grand Cherokee ECM:
- โ Check Engine Light is on with various communication or sensor codes.
- โ Engine stalls, hesitates, or runs rough for no apparent reason.
- โ The vehicle won’t start, even with a good battery and starter.
- โ Noticeable decrease in fuel efficiency.
- โ Transmission shifting issues or harsh engagement.
- โ Communication problems with diagnostic scan tools.
Plug-and-Play Installation: No Dealer Visit Required
Getting your Jeep back on the road is straightforward. The ECM is located in the right-hand (passenger side) rear of the engine compartment.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the ECM: Find the module on the passenger-side firewall in the engine bay.
- Disconnect Connectors: Carefully release the locking tabs on the wiring harness connectors and pull them straight out. Never force them. Inspect the connectors for any corrosion or bent pins.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket.
- Install the New ECM: Mount your new, pre-programmed module in place and securely tighten the bolts.
- Reconnect Everything: Plug the wiring harnesses back into the new ECM until they click into place. Reconnect the negative battery terminal.
- Final Step: Start the engine and let it idle for a few minutes to allow the systems to sync. Your Jeep is ready to drive!
Guaranteed Compatibility
This module is a direct replacement for 2005-2006 Jeep Grand Cherokee models equipped with the 3.7L engine and 4×4 drivetrain. It is fully compatible with the following part numbers, ensuring a perfect match for your vehicle’s system:
05094895AB, 05094898AA, 05094898AB, 05094898AC, 05094898AD, 05094898AE, 05094898ZB, 56044742AC, 56044742AD, 05094898AF.