Restore Peak Performance to Your Jeep with a Plug-and-Play Solution
Is your 2005 or 2006 Jeep Grand Cherokee with the 3.7L engine giving you headaches? If you’re dealing with frustrating issues like intermittent stalling, a persistent check engine light, rough idling, or a complete no-start condition, a failing Engine Control Module (ECM) is a very likely culprit. In my two decades as a technician, I’ve seen firsthand how a faulty engine computer can mimic a dozen other problems, leading to wasted time and money on incorrect repairs. This isn’t just an inconvenience; it’s a reliability issue that can leave you stranded.
This replacement Engine Control Module is the definitive solution. We take the guesswork and hassle out of the repair by pre-programming it specifically to your vehicle’s VIN and mileage. When it arrives at your door, it’s a true plug-and-play part. You won’t need a trip to the dealership or access to expensive diagnostic tools for programming. This saves you hundreds of dollars and gets your Grand Cherokee back on the road where it belongs.
From the Diagnostic Bay
Just last month, a 2006 Grand Cherokee 3.7L was towed into my shop. The owner had already replaced the spark plugs and a coil pack trying to solve a random stalling problem that left no codes. The engine would just cut out at stoplights. After confirming fuel pressure and sensor inputs were good, we focused on the ECM. Hooking up a scope, we saw the injector driver signals dropping out intermittently. We installed one of our pre-programmed modules, and the problem was solved instantly. The customer was thrilled to have a reliable vehicle again without paying for more unnecessary parts.
Common Signs of a Failing Engine Computer
- ✔ Check Engine Light is on with various, often inconsistent, trouble codes.
- ✔ Engine cranks but refuses to start.
- ✔ Noticeable decrease in fuel economy.
- ✔ Rough or erratic engine idling.
- ✔ Intermittent stalling or hesitation during acceleration.
- ✔ Communication errors with diagnostic scan tools.
- ✔ Automatic transmission shifting problems.
A Straightforward Guide to Installation
Replacing the ECM on your Grand Cherokee is a manageable job for a DIYer with basic tools. The module is located in the engine compartment on the right-hand (passenger) side, near the firewall. Follow these steps for a smooth installation.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent accidental reconnection.
- Locate the ECM: Open the hood and find the Electronic Control Module on the passenger side of the engine bay.
- Disconnect Connectors: Carefully unlatch and remove the electrical wiring harnesses connected to the old module. Inspect the connectors for any corrosion or damage.
- Remove the Old Module: Unbolt the mounting hardware holding the original ECM in place and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed ECM in the same location and secure it with the original hardware.
- Reconnect Everything: Firmly plug the wiring harnesses back into the new module until they click into place. Reconnect the negative battery terminal.
- Final Check: Turn the key to the ‘On’ position for 10 seconds before starting the engine. This allows the system to initialize. Start your Jeep and enjoy a smooth-running engine!
Verified Vehicle Compatibility
This Engine Control Module is a direct-fit replacement for the following vehicles, ensuring perfect function and communication with your existing systems.
- Make: Jeep
- Model: Grand Cherokee
- Years: 2005-2006
- Engine: 3.7L V6
- Drivetrain: 4×4
This unit, part number 05094898AC, is also a direct replacement for the following interchangeable part numbers: 05094895AB, 05094898AA, 05094898AB, 05094898AD, 05094898AE, 05094898ZB, 56044742AC, 56044742AD, and 05094898AF. Ordering this part ensures you receive a compatible module for your specific vehicle.
Frequently Asked Questions About This 2005-2006 Grand Cherokee ECM
Does this ECM really not need any programming?
That’s correct. We handle all the programming before we ship it. Using the VIN you provide during checkout, we flash the module with your vehicle’s specific software and security information. It arrives ready to install and start.
Is this a difficult part to install myself?
For most people with basic hand tools, this is a very straightforward installation. The module is easy to access in the engine bay. By following our guide, you can complete the job in under an hour.
What information do you need from me to program it?
All we need is your vehicle’s 17-digit Vehicle Identification Number (VIN) and the current mileage. You can typically find the VIN on your driver’s side dashboard (visible through the windshield) or on your vehicle’s registration.
Will this fix my specific check engine light codes?
A failing ECM can cause a wide range of diagnostic trouble codes (DTCs). While this part often resolves ECM-related codes (like communication errors or internal processor faults), it’s always best to diagnose the vehicle properly. If your codes point to a specific sensor, that sensor should be checked first.
What is the warranty on this part?
This part comes with our standard warranty, ensuring it is free from defects in materials and workmanship. Please see our warranty page for complete details and duration.