Restore Your Engine’s Heartbeat and Drive with Confidence
Is a persistent check engine light dimming your driving enjoyment? Are you battling frustrating issues like rough idling, poor fuel economy, or unexpected stalling? These aren’t just annoyances; they’re signals from your vehicle’s brain—the Powertrain Control Module (PCM)—that something is wrong. It’s time to restore that crisp response and dependable performance you love. This replacement engine computer, part number 12586242, is the definitive solution, arriving at your door fully programmed to your vehicle’s specific VIN with the latest GM software updates.
Signs Your Engine Computer Needs Attention
A failing PCM can manifest in numerous ways, often mimicking other component failures. If you’re experiencing any of the following, this module is the likely solution to get your truck or SUV back to factory-fresh performance.
- ✔ Illuminated Check Engine Light: Often with critical diagnostic trouble codes (DTCs) like P0601, P0602, P0606, or other communication errors.
- ✔ Erratic Engine Behavior: Unexplained stalling, rough running, hesitation during acceleration, or a noticeable drop in power.
- ✔ Poor Fuel Mileage: The PCM controls the air-fuel mixture; a faulty unit can lead to inefficient combustion and more trips to the pump.
- ✔ Transmission Shifting Problems: In many vehicles, the PCM also manages transmission functions, leading to harsh or delayed shifts.
- ✔ Complete No-Start Condition: In severe cases, the PCM can fail entirely, preventing the engine from starting at all.
A Mechanic’s Note: The VIN Programming Difference
“I’ve seen it a dozen times. A customer buys a used computer online, plugs it in, and… nothing. Or worse, the vehicle runs terribly and has new warning lights on. That’s because a PCM isn’t just a part; it’s tailored to the specific options, transmission, and emissions of the vehicle it came from. Our VIN programming service isn’t an upsell; it’s the essential step that makes this a true plug-and-drive repair. We ensure the module we send you speaks the exact language of your truck, saving you a costly trip to the dealer and the headache of a failed repair.”
Guided Installation for Your 2004 SSR PCM
Replacing your engine computer might sound daunting, but it’s a straightforward process. We’ve simplified it to get you back on the road quickly. Regain the satisfaction of a job well done and the peace of mind of a reliable vehicle.
- Safety First: Begin by disconnecting the negative terminal on your vehicle’s battery. This is a crucial step to prevent any electrical damage.
- Locate the Old Module: On most compatible vehicles, the PCM is found in the engine bay, either next to the airbox or under the battery on the driver’s side.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that may need to be gently pried or squeezed. Once disconnected, unbolt the module from its mounting bracket.
- Install the New PCM: Mount your new, pre-programmed module in the same location. Secure the bolts and then firmly reconnect the electrical harnesses. You should hear and feel a distinct ‘click’ as they lock into place.
- Reconnect and Start: Reattach the negative battery terminal. The vehicle may require a security relearn procedure, which typically involves turning the key to the ‘ON’ position for 10-15 minutes before starting. Your vehicle’s service manual will have the exact steps. Start the engine and enjoy the restored performance!
Guaranteed Fit for Your GM Vehicle
This module is a direct replacement for service number 12586242 and is compatible with a wide range of 2004 GM trucks and SUVs. Please verify your service number or contact us with your VIN to confirm compatibility. This part fits the following vehicles:
- Buick Rainier (5.3L)
- Cadillac Escalade, ESV, EXT
- Chevrolet Avalanche 1500
- Chevrolet SSR
- Chevrolet Silverado 1500, 2500, 3500 (Gasoline)
- Chevrolet Suburban 1500, 2500 (Gasoline)
- Chevrolet Tahoe
- Chevrolet Trailblazer EXT (5.3L)
- GMC Envoy XL, XUV (5.3L)
- GMC Sierra 1500, 2500, 3500 (Gasoline)
- GMC Sierra Denali
- GMC Yukon, XL 1500, XL 2500
- Hummer H2
- Isuzu Ascender (5.3L)
Do I need to do anything after installing this PCM?
Because we program the module to your VIN, it is ready for installation. However, some GM vehicles require a security relearn procedure (often called a CASE relearn or anti-theft relearn) to sync the new PCM with your keys and other modules. This can typically be done without special tools and instructions can be found in your owner’s manual or online.
How do I provide my VIN?
After you complete your purchase, simply reply to your order confirmation email with your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information, as it is essential for correct programming.
What if my original part number isn’t 12586242?
This module also replaces several other service numbers, including 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, YFKX, YFXL, YFXM, YFXN, YFXP, and YHTN. As long as your vehicle is on the compatibility list, this part will work when programmed to your VIN.
Is this a simple plug-and-play installation?
Yes, for the most part. The physical installation is very simple—just unbolt the old one and bolt in the new one. The only additional step is the potential security relearn, which ensures your vehicle’s anti-theft system recognizes the new computer.
Will this fix my specific problem?
This PCM is designed to resolve issues directly related to the engine computer, including common internal failure codes (like P0601), communication faults, and erratic engine/transmission behavior. While it solves a wide range of problems, it’s always best to have a proper diagnosis to confirm the PCM is the root cause.