Is Your 2004 Chevrolet SSR Running Rough?
If you’re experiencing frustrating issues like stalling, poor fuel economy, erratic shifting, or a persistent check engine light, a failing Powertrain Control Module (PCM) could be the culprit. The PCM is the brain of your vehicle, managing critical engine and transmission functions. When it starts to fail, it can cause a cascade of problems that are difficult to diagnose and can leave you stranded. Don’t let a faulty computer keep your unique SSR off the road. This direct-fit replacement engine computer is the reliable solution you need to restore your vehicle’s performance and dependability.
From the Diagnostic Bay
We had a 2004 SSR come into the shop with a complaint that was driving the owner crazy. It would randomly stall at stoplights, but not every time. It also had a harsh 1-2 shift that felt like being rear-ended. The check engine light was on, but the codes were intermittent and pointed to a dozen different sensors. After hours of chasing electrical ghosts, we finally isolated the problem to the PCM itself. The internal processor was failing under specific heat conditions, causing it to send incorrect signals. We installed a VIN-programmed replacement module, performed the security relearn, and the truck ran like it just rolled off the showroom floor. It’s a perfect example of how a single module can create a multitude of confusing symptoms.
The Ultimate Solution: A Pre-Programmed 2004 SSR Engine Computer
This isn’t just a generic part off a shelf. This is a fully programmed engine control module, part number 12586242, ready for installation in your vehicle. We take the guesswork out of the repair by flashing the unit with the latest, most stable software updates directly from GM. All we need is your vehicle’s VIN (Vehicle Identification Number) at the time of purchase. This ensures that the computer is a perfect match for your SSR’s specific configuration, including its engine, transmission, and emissions equipment. This process eliminates the need for an expensive trip to the dealership for programming.
Common Symptoms of a Failing PCM:
- ✔ Check Engine Light is on with various, often unrelated, trouble codes.
- ✔ Engine stalling or shutting off unexpectedly while driving.
- ✔ Hard starting or a complete no-start condition.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Rough or erratic automatic transmission shifting.
- ✔ Engine misfires, stumbling, or hesitation during acceleration.
- ✔ Failure to pass state emissions testing.
Guaranteed Compatibility and Simple Installation
This module is a direct replacement for service number 12586242 and is also compatible with a wide range of other service numbers, including 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, YFKX, YFXL, YFXM, YFXN, YFXP, and YHTN. It fits a variety of 2004 GM trucks and SUVs, such as the Chevrolet Silverado, GMC Sierra, Tahoe, Yukon, Escalade, and more. While installation is straightforward for a skilled DIYer or professional technician, please note that a security relearn procedure (often called a CASE relearn) may be required after installation to sync the new computer with your vehicle’s anti-theft system. This can typically be done with a capable scan tool or by following a specific key-on/key-off procedure.
Frequently Asked Questions
Do I need to get this computer programmed?
No. We handle the programming for you before shipment. Simply provide your vehicle’s VIN during checkout, and we will load the latest GM-certified software for your specific vehicle. It will arrive ready to install.
Where is the PCM located on my 2004 Chevrolet SSR?
On the 2004 SSR, as well as similar models like the Trailblazer EXT and Envoy, the Electronic Control Module is typically located in the engine bay, next to the air filter box for easy access.
Will this fix my check engine light?
If the check engine light is caused by a faulty PCM, then yes, this part will resolve the issue. However, it’s crucial to ensure a proper diagnosis has been performed, as the light can be triggered by many other failing components like sensors or wiring.
Is this a simple plug-and-play installation?
It is a direct physical fit and electronically programmed for your vehicle. However, on most GM vehicles of this era, a security relearn procedure is necessary after installation to allow the vehicle to start. This procedure syncs the new PCM with your vehicle’s anti-theft system.
How do I find my original part number?
Your vehicle’s original part number or service number is printed on a sticker on the PCM itself. You will need to locate the module on your vehicle to verify the number matches 12586242 or one of the other compatible service numbers listed.