Restore Your Vehicle’s Performance with a VIN-Programmed Engine Computer
Is your 2006 Chevrolet HHR running rough, stalling unexpectedly, or showing a persistent Check Engine Light? You’re not alone. The Engine Control Module (ECM) is the brain of your vehicle, and when it starts to fail, it can cause a host of frustrating and difficult-to-diagnose problems. This isn’t just an inconvenience; it can affect your vehicle’s reliability, fuel economy, and safety. This module, part number 19210737, is the direct-fit, reliable solution you need to get your vehicle running like new again.
Case Study: A Tricky Diagnosis
I once had a 2006 HHR in my bay that was driving the owner crazy. It had an intermittent no-start condition with no clear pattern. Sometimes it would fire right up, other times it was completely dead. The scan tool would intermittently show a U0100 ‘Lost Communication with ECM’ code, but other times it would connect just fine. After checking all the wiring and grounds—which is always the first step—we isolated the issue to an internal failure in the ECM. The processor was failing under certain temperature conditions. We installed a VIN-programmed module just like this one, and the problem was solved instantly. It’s a classic example of how a failing ECM can mimic a dozen other problems.
Common Signs of a Failing ECM
If you’re experiencing any of the following, a faulty engine computer could be the culprit. As a mechanic, I’ve seen these symptoms point to the ECM hundreds of times. A replacement 2006 HHR Engine Control Module is often the definitive fix.
- ✔ Check Engine Light is on with codes like P0601 (Internal Control Module Memory Check Sum Error) or P0606 (ECM/PCM Processor Fault).
- ✔ Your vehicle fails to start or starts intermittently.
- ✔ Noticeable drop in fuel efficiency for no apparent reason.
- ✔ Engine stalling, stuttering, or misfiring while driving.
- ✔ Poor or erratic automatic transmission shifting.
- ✔ Loss of communication with the module when using a diagnostic scan tool.
Plug-and-Play Simplicity: The VIN Programming Advantage
The biggest headache with replacing an ECM has always been the programming. In the past, you’d have to buy the part, install it, and then have your vehicle towed to a dealership for expensive programming. We eliminate that entire process. Simply provide us with your vehicle’s VIN (Vehicle Identification Number) during checkout, and our technicians will flash this module with the latest official GM software specific to your car. It arrives at your door ready to be installed, saving you time, money, and the hassle of a dealer visit.
A DIYer’s Guide to Installation
Installing your new 2006 HHR Engine Control Module is a straightforward job that most DIY enthusiasts can handle in their own garage. For the 2006 HHR, the ECM is located in the left-hand (driver’s side) rear of the engine compartment.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the ECM: On your HHR, find the module at the back of the engine bay on the driver’s side.
- Disconnect the Connectors: Carefully unclip the wiring harness connectors from the old module. They have locking tabs, so be gentle to avoid damage.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket and remove it from the vehicle.
- Install the New Module: Bolt your new, pre-programmed ECM into place and securely reconnect the wiring harnesses. You should hear a ‘click’ as they lock in.
- Reconnect the Battery: Re-attach the negative battery terminal.
- Perform Security Relearn: Your vehicle may require a simple key-cycle security relearn procedure. Typically, this involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’ for 10 seconds, and repeating two more times before starting the engine. This allows the anti-theft system to recognize the new ECM.
Verified Vehicle Compatibility
This ECM, identified by service number 19210737, is a direct replacement for several part numbers including 12590032, 12602044, 12603530, 12605843, 12607096, and 12630457. It fits a wide range of General Motors, Isuzu, and Saab vehicles. While the list is extensive, this is a guaranteed fit for the 2006 HHR Engine Control Module with the 2.4L engine. Please verify your specific model in the list below or contact us with your VIN for confirmation.
Frequently Asked Questions
What do I need to do after I buy this ECM?
After your purchase, you must send us your 17-digit VIN. We cannot ship your part until we have this information, as we use it to load the correct GM software onto the module for your specific vehicle.
Is this part difficult to install?
No, the physical installation is straightforward for most DIYers. Since we program it beforehand, you avoid complex computer work. You may just need to perform a simple security relearn procedure, which only requires using your ignition key.
Will this fix my specific problem?
This module will correct any issues directly caused by a failing ECM, including common internal fault codes. However, it’s essential to ensure your vehicle has been properly diagnosed, as other failing sensors or wiring issues can cause similar symptoms.
My original part number is 12607096. Will this work?
Yes, absolutely. This ECM, part number 19210737, is the correct and updated service replacement for several older numbers, including 12607096. It is fully interchangeable.
Where is the ECM located on my 2006 HHR?
On the 2006 Chevrolet HHR, the Engine Control Module is located in the engine compartment, on the rear driver’s side (LH side).