Restore Your Grand Cherokee’s Performance and Reliability
If your 2005 or 2006 Jeep Grand Cherokee is suddenly stalling, running rough, or refusing to start, a failing Engine Control Module (ECM) is a very likely culprit. In my 20+ years as a technician, I’ve seen countless drivers chase their tails replacing sensors and spark plugs, only to find the root cause was the vehicle’s computer brain. A faulty ECM can trigger a cascade of confusing issues, from erratic transmission shifting to false check engine lights, making your dependable Jeep feel unpredictable and unsafe.
The Direct Solution: A Pre-Programmed 2005-2006 Grand Cherokee ECM
Don’t waste time and money on a trip to the dealership for expensive diagnostics and programming. This Engine Control Module is the straightforward, effective solution you need. We take the hassle out of the repair by programming the unit specifically to your vehicle’s VIN and mileage before it even ships. When it arrives at your door, it’s ready for a true plug-and-play installation, getting you back on the road without the need for specialized tools or a costly tow to the dealer.
This module directly resolves common failure symptoms, including:
- โ No-start or intermittent starting conditions
- โ Poor engine performance and reduced fuel economy
- โ Check Engine Light (CEL) on with communication error codes
- โ Harsh or incorrect automatic transmission shifting
- โ Stalling at idle or while driving
Expert Pro Tip: Check Your Connections First
Before you condemn your old ECM, take five minutes to inspect and clean the main electrical harness connectors that plug into the module. Over the years, corrosion and dirt can build up on the pins, causing poor contact that mimics complete ECM failure. Disconnect the battery, unplug the connectors, and use a quality electronics cleaner and a small brush to gently scrub both the male and female pins. A solid, clean connection is critical for the new module to function correctly.
Plug-and-Play Installation: No Dealer Visit Required
Installing your new ECM is a job most DIYers can handle in their own driveway. Follow these simple steps to get your Grand Cherokee running right again.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes for the system to discharge.
- Locate the ECM: On your 2005-2006 Grand Cherokee, the ECM is located in the engine compartment on the right-hand (passenger) side, near the firewall.
- Disconnect the Harness: Carefully release the locking tabs on the electrical connectors and pull them straight off the old module. Never force them.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the hardware, as you will need it for the new unit.
- Install the New ECM: Mount your new, pre-programmed ECM onto the bracket and securely tighten the bolts.
- Reconnect and Secure: Plug the electrical harnesses into the new module until they click firmly into place. Reconnect your vehicle’s negative battery terminal.
- Final Check: Turn the key to the ‘On’ position (without starting) for 10 seconds to allow the systems to initialize, then start the engine. Your check engine light should be off, and the engine should run smoothly.
Guaranteed Compatibility
This module is a direct replacement for 2005-2006 Jeep Grand Cherokee models equipped with the 3.7L engine and 4×4. It is fully compatible with the following original equipment part numbers: 05094895AB, 05094898AA, 05094898AB, 05094898AC, 05094898AD, 05094898AE, 05094898ZB, 5604472AC, 56044742AD, and 05094898AF. By providing your VIN at checkout, you ensure a perfect software match for your specific vehicle configuration.