Programmed GM PCM 12597125 | Pre-Flashed to Your VIN for HHR, Cobalt & More

Restore Your HHR’s Performance

Get your 2007-2011 Chevy HHR running smoothly again with our plug-and-play PCM. Pre-programmed to your VIN for a hassle-free installation, this module is the direct solution for engine trouble codes and poor performance. Provide your VIN and get back on the road fast!

$104.95

+11.99 USPS Priority Shipping

Availability: In stock



Guaranteed Safe Checkout

Restore Your Vehicle’s Heartbeat and Your Peace of Mind

Is a persistent check engine light dimming your driving enjoyment? Are you battling frustrating issues like poor fuel economy, erratic shifting, or a vehicle that just won’t start reliably? These are common signs that your vehicle’s ‘brain’—the Powertrain Control Module (PCM)—may be failing. This isn’t just an inconvenience; it’s a matter of reliability and safety. Take back control with our pre-programmed Engine Control Module, a direct solution designed to restore your vehicle’s performance and your confidence on the road.

This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a genuine GM module (service # 12597125) and flash it with the very latest, most stable software updates directly from GM, all tailored specifically to your vehicle’s unique Vehicle Identification Number (VIN). This critical step ensures perfect communication between all your vehicle’s systems, eliminating the need for an expensive trip to the dealership for programming.

Warning Signs and How to Overcome Them

A failing PCM can manifest in confusing ways. Here’s what this module is engineered to solve, giving you back a car you can count on:

  • ✔ Eliminate Check Engine Lights: Directly addresses internal module failure codes like P0601, P0602, P0606, and other communication-related DTCs.
  • ✔ Solve No-Start Conditions: Restores proper fuel and spark control to get your engine firing up consistently every time.
  • ✔ Smooth Out Performance: Corrects issues like engine stumbling, hesitation, and rough idling for a smoother, more responsive drive.
  • ✔ Improve Fuel Economy: By restoring precise engine management, you can regain the fuel efficiency you’ve been missing.
  • ✔ Pass Emissions Testing: A properly functioning PCM is essential for passing state-mandated smog and emissions checks.
  • ✔ Fix Erratic Transmission Behavior: Re-establishes clear communication with the transmission controller for crisp, predictable shifting.

An Expert’s Diagnostic Note

Before replacing any module, I always tell my customers to do one thing: check the basics. A corroded ground wire or a loose connection at the battery can mimic a dead PCM. Take a moment to inspect the main power and ground wires leading to your current module. A clean, tight connection can sometimes be the simple fix you need. If those are solid, you can be confident that the module itself is the culprit.

Guided Installation to Restore Your Ride

We’ve made this repair as straightforward as possible. Because we handle the complex programming, your job is simply the physical installation. Here’s a general guide to get you started:

  1. Safety First: Begin by disconnecting the negative terminal from your vehicle’s battery to prevent any electrical shorts.
  2. Locate the Old Module: Find your current PCM. Its location varies by model (e.g., LH rear of the engine compartment on an HHR, under the battery on a Silverado).
  3. Disconnect and Remove: Carefully unplug the wiring harness connectors. They often have locking tabs that need to be released. Once disconnected, unbolt the module from its mounting bracket.
  4. Install the New PCM: Mount your new, pre-programmed module in place and securely reconnect the wiring harnesses. You should hear a ‘click’ as they lock.
  5. Power Up: Reconnect the negative battery terminal.
  6. Perform Security Relearn: Most GM vehicles will require a simple security relearn procedure to sync the new PCM with your keys. This can typically be done in your driveway without any special tools—a common method is turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two more times before starting the engine.

Your Solution: A Pre-Programmed GM PCM

Choosing the right part is crucial for a lasting repair. This Programmed GM PCM is the definitive answer for a wide range of vehicles, ensuring that the heart of your engine’s management system is operating flawlessly with the most current software available. Regain the performance and reliability your vehicle had when it was new.

Tailored Fit for Your Ride

This module is a direct replacement for service number 12597125 and a host of others, providing a perfect fit for the following vehicles and engine configurations. Please confirm your vehicle is on the list below.

  • Buick Lucerne: 2009-2011 (3.9L)
  • Chevrolet Cobalt: 2007-2010 (2.2L, 2.4L)
  • Chevrolet Express 1500 Van: 2008-2009 (4.3L)
  • Chevrolet HHR: 2007-2011 (2.2L, 2.4L)
  • Chevrolet Impala: 2010-2011
  • Chevrolet Malibu: 2007-2012 (2.2L, 2.4L, 3.5L)
  • Chevrolet Silverado 1500 Pickup: 2007-2009 (4.3L)
  • GMC Savana 1500 Van: 2008-2009 (4.3L)
  • GMC Sierra 1500 Pickup: 2007-2009 (4.3L)
  • Pontiac G5: 2007-2010
  • Pontiac G6: 2008-2010 (2.4L)
  • Pontiac Solstice: 2008-2010 (2.4L)
  • Saturn Aura: 2008-2009 (2.4L)
  • Saturn Sky: 2008-2010 (2.4L)
  • Saturn Vue: 2008-2010 (2.4L)

Frequently Asked Questions

What do you mean by “pre-programmed”?

It means we load the module with your vehicle’s specific software using your VIN before we ship it. This ensures it works correctly with your engine, transmission, and options, saving you a costly programming fee at a dealership.

What is a VIN and where do I find it?

The VIN (Vehicle Identification Number) is your car’s unique 17-digit serial number. You can easily find it on the driver’s side of the dashboard (visible through the windshield), on your vehicle’s registration, or on your insurance card.

Do I need to do anything after I install it?

Yes, you will likely need to perform a simple security relearn procedure, also known as a key relearn. This process syncs the new computer to your vehicle’s anti-theft system and can usually be done at home without special tools in about 30 minutes.

My old part has a different number on it. Will this still work?

Yes. This module, service number 12597125, replaces multiple older part numbers including 12612397, 12594750, 12629019, and others listed in the description. As long as your vehicle is on our compatibility list, this part will function correctly once programmed to your VIN.

How long does the programming process take before shipping?

We pride ourselves on a fast turnaround. Once you provide your VIN after purchase, we typically program and ship the module within one business day so you can get your vehicle back on the road quickly.

Condition

Refurbished

Manufacturer Part Number

Year
Genuine OEM

Yes

Year

2007, 2008, 2009

Model

HHR

Brand

GM

MPN

12618031

Interchange part number

Hardware Type

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