Is Your GM Vehicle Running Rough, Stalling, or Showing a Check Engine Light?
Dealing with erratic engine behavior can be incredibly frustrating. One moment your car runs fine, the next it’s stalling at a stoplight, shifting harshly, or losing power. These aren’t just annoyances; they’re signs that your vehicle’s brain—the Powertrain Control Module (PCM)—may be failing. This isn’t a problem you can ignore. A faulty PCM can lead to poor fuel economy, failed emissions tests, and even leave you stranded. It’s time to restore your vehicle’s reliability and your confidence on the road.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a failing engine computer is a likely culprit. This module is the definitive solution for symptoms such as:
- Unexpected stalling or difficulty starting
- Rough idling or engine misfires
- Poor acceleration and loss of power
- Harsh or erratic automatic transmission shifting
- Decreased fuel efficiency
- Check Engine Light (CEL) with codes related to sensors, communication, or processor failure
This replacement 2003-2005 Impala PCM 89017735 is the core component that will get your vehicle running correctly again. We take the guesswork out of the repair by programming the module specifically to your vehicle’s VIN before it ever leaves our facility. This ensures it communicates perfectly with your car’s existing systems, just like the original unit from the factory.
Features & Benefits
- ✔ VIN-Specific Programming: We flash the module with the latest GM software updates using your VIN. This ensures 100% compatibility and proper function right out of the box.
- ✔ Plug-and-Play Installation: Because the programming is done for you, installation is straightforward. No expensive trips to the dealership for flashing are required.
- ✔ Restored Drivability: Eliminate frustrating issues like stalling, rough shifts, and poor performance. Enjoy a smoother, more responsive, and more reliable driving experience.
- ✔ Cost-Effective Repair: Get a dependable solution without the high cost and hassle of sourcing and programming a module through a dealership.
- ✔ Broad GM Compatibility: This module is a direct replacement for part numbers 12583827 and 12583826, fitting a wide range of vehicles including the Impala, Monte Carlo, Grand Prix, Century, Rendezvous, and more.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight: Why VIN Programming is Non-Negotiable
As a technician, I’ve seen countless drivers try to save a few dollars with a generic, non-programmed module from a salvage yard. It almost never ends well. Your vehicle’s PCM is not a one-size-fits-all part. It needs to know your engine size, transmission type, tire size, and even the specific options your car was built with. Without precise VIN programming, you can face a host of new problems, from the transmission not shifting correctly to the anti-theft system preventing the car from starting. By providing us your VIN, you’re ensuring this 2003-2005 Impala PCM 89017735 is a true, seamless replacement, saving you time, money, and headaches.
Frequently Asked Questions
How do I provide my VIN number?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your part until we receive and validate this information, as the programming is essential.
Is any additional programming required after installation?
No. This module arrives pre-programmed and ready for installation. In most cases, a security relearn procedure may be necessary, which is a simple process that can typically be done without special tools. Instructions are widely available online for your specific model.
How can I be sure this part fits my vehicle?
Please check the extensive compatibility list provided. This module, part number 89017735, and its alternates 12583827 and 12583826, fit a wide range of 2003-2005 GM models. The most important step is providing your VIN so we can program the correct software for your exact build.
What if my original part number is slightly different?
GM often uses several part numbers for the same component. This module is a direct replacement for part numbers 12583827 and 12583826. If your part number is not listed, please contact us with your VIN to confirm compatibility before ordering.
What does this part do?
The Powertrain Control Module, or PCM, is the main computer that controls your vehicle’s engine and transmission. It manages fuel injection, ignition timing, emissions systems, and shift points to ensure optimal performance, fuel economy, and reliability. A properly functioning 2003-2005 Impala PCM 89017735 is critical for your vehicle’s operation.