Is Your Truck or SUV Running Rough? Get Back on the Road with Confidence.
There’s nothing more frustrating than a vehicle you can’t rely on. If your Chevrolet Tahoe, Silverado, or other GM truck is suffering from a persistent check engine light, erratic shifting, stalling, or a no-start condition, a failing Powertrain Control Module (PCM) is often the culprit. This isn’t just an inconvenience; it’s a critical failure that affects your vehicle’s performance, fuel economy, and safety. Instead of paying a fortune at the dealership, get the reliable, straightforward solution right here. This is the brain of your vehicle, and we provide a perfect replacement, pre-programmed specifically for you. A quality 2003-2006 Tahoe programmed PCM is the key to restoring your vehicle’s health.
Common Symptoms of a Failing GM PCM & Your Solution
A faulty PCM can cause a wide range of confusing issues. If you’re experiencing any of the following, this module is your definitive solution:
- Check Engine Light: Persistent illumination with codes like P0601, P0602, or P0606, which point directly to an internal module fault.
- Poor Performance: Noticeable loss of power, reduced fuel mileage, and hesitation during acceleration.
- Erratic Shifting: The transmission may shift harshly, get stuck in a gear, or shift at the wrong times.
- Stalling or No-Start: The engine may stall intermittently or fail to start at all, even with a good battery and starter.
- Communication Errors: Your scanner may not be able to communicate with the PCM, showing U-codes.
Features & Benefits
- ✔ Plug & Drive Installation: We program this module to your vehicle’s specific VIN, ensuring it’s ready for installation right out of the box. No expensive trip to the dealership for programming is required.
- ✔ Optimized Performance: Your new computer arrives flashed with the latest stable software updates from GM, helping to resolve common bugs and improve engine efficiency and transmission shifting.
- ✔ Guaranteed Compatibility: This unit is a direct replacement for a wide range of GM trucks and SUVs, including service numbers 12582605, 89017750, 12589463, and more.
- ✔ Tested for Reliability: Each module is meticulously inspected and tested to ensure it meets or exceeds original equipment standards for function and durability.
- ✔ Purchase with Confidence: This unit is backed by our one-year replacement warranty.
From the Technician’s Bench: The “Ghost in the Machine” Fix
I’ve seen it dozens of times. A customer comes in with a mid-2000s Silverado that has a bizarre, intermittent shifting problem that no one can figure out. They’ve replaced sensors, solenoids, even the transmission fluid, but the issue persists. In many of these cases, the root cause is a failing PCM sending corrupt data to the transmission. It’s the classic “ghost in the machine.” Installing a properly flashed 2003-2006 Tahoe programmed PCM not only fixes the obvious problem but often clears up other minor, nagging electrical issues the owner had just learned to live with. It truly restores the vehicle’s entire electronic nervous system.
Ordering is simple. After your purchase, just send us your vehicle’s VIN, and we’ll handle the programming. We’ll ship you a module that is ready to be installed, allowing you to get your dependable truck back to work quickly and easily. Don’t let a bad computer keep you sidelined. This is the correct, reliable fix you’ve been looking for to solve your vehicle’s electronic issues. For anyone needing a 2003-2006 Tahoe programmed PCM or a compatible module for their GM truck, this is the most effective solution available.
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ESCALADE EXT 04 Electronic Control Module; (LH front under battery), ID 12602802
HUMMER H2 04 Electronic Control Module; (LH front under battery), SUV
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ENVOY XL 03 Electronic Control Module; 5.3L (next to air box)
SUBURBAN 2500 03 Electronic Control Module; (LH front under battery), 6.0L
YUKON 04 Electronic Control Module; (LH front under battery), ID 12602802
YUKON XL 2500 05-06 Electronic Control Module; (LH front under battery), 6.0L
AVALANCHE 1500 04 Electronic Control Module; (LH front under battery), ID 12602802
SIERRA 1500 PICKUP 07 Electronic Control Module; classic style (creased door skin), (LH front under battery), w/o hybrid option; w/o 4.3L
SIERRA DENALI 05-06 Electronic Control Module; (LH front under battery)
SUBURBAN 2500 04 Electronic Control Module; (LH front under battery), 6.0L, ID 12602802
YUKON XL 1500 03 Electronic Control Module; (LH front under battery)
YUKON XL 1500 04 Electronic Control Module; (LH front under battery), ID 12602802
ESCALADE ESV 03 Electronic Control Module; (LH front under battery), PCM
ESCALADE ESV 04 Electronic Control Module; (LH front under battery), ID 12602802
HUMMER H2 07 Electronic Control Module; (LH front under battery), powertrain control
SIERRA 3500 PICKUP 05-06 Electronic Control Module; (LH front under battery), gasoline, 6.0L
SIERRA DENALI 03 Electronic Control Module; (LH front under battery)
SILVERADO 2500 PICKUP 05-06 Electronic Control Module; (LH front under battery), gasoline, 6.0L
SUBURBAN 1500 03 Electronic Control Module; (LH front under battery)
HUMMER H2 05-06 Electronic Control Module; (LH front under battery)
SIERRA 2500 PICKUP 04 Electronic Control Module; (LH front under battery), gasoline, 6.0L, ID 12602802
YUKON 03 Electronic Control Module; (LH front under battery)
ESCALADE 05-06 Electronic Control Module; (LH front under battery)
ESCALADE ESV 05-06 Electronic Control Module; (LH front under battery)
SIERRA 2500 PICKUP 05-06 Electronic Control Module; (LH front under battery), gasoline, 6.0L
AVALANCHE 1500 03 Electronic Control Module; (LH front under battery)
SILVERADO 2500 PICKUP 03 Electronic Control Module; (LH front under battery), gasoline, 6.0L
SILVERADO 1500 PICKUP 04 Electronic Control Module; (LH front under battery), w/o hybrid option; w/o 4.3L; ID 12602802
TAHOE 03 Electronic Control Module; (LH front under battery)
TAHOE 05-06 Electronic Control Module; (LH front under battery)
YUKON 05-06 Electronic Control Module; (LH front under battery)
SILVERADO 3500 PICKUP 04 Electronic Control Module; (LH front under battery), gasoline, 6.0L, ID 12602802
SILVERADO 2500 PICKUP 07 Electronic Control Module; classic style (creased door skin), (LH front under battery), gasoline, 6.0L
SILVERADO 3500 PICKUP 05-06 Electronic Control Module; (LH front under battery), gasoline, 6.0L
SUBURBAN 1500 04 Electronic Control Module; (LH front under battery), ID 12602802
ISUZU ASCENDER 03 Electronic Control Module; (LH engine), 5.3L
SIERRA 1500 PICKUP 03 Electronic Control Module; (LH front under battery), w/o 4.3L
SIERRA 1500 PICKUP 04 Electronic Control Module; (LH front under battery), w/o hybrid option; w/o 4.3L; ID 12602802
ESCALADE 03 Electronic Control Module; (LH front under battery), PCM
SSR 03 Electronic Control Module; (next to air box)
SIERRA 2500 PICKUP 03 Electronic Control Module; (LH front under battery), gasoline, 6.0L
SIERRA DENALI 07 Electronic Control Module; classic style (creased door skin), (LH front under battery)
SILVERADO 3500 PICKUP 03 Electronic Control Module; (LH front under battery), gasoline, 6.0L
SUBURBAN 1500 05-06 Electronic Control Module; (LH front under battery)
TRAILBLAZER EXT 03 Electronic Control Module; 5.3L (next to air box)
SILVERADO 1500 PICKUP 05-06 Electronic Control Module; (LH front under battery), w/o hybrid option; w/o 4.3L
SILVERADO 1500 PICKUP 07 Electronic Control Module; classic style (creased door skin), (LH front under battery), w/o hybrid option; w/o 4.3L
SILVERADO 3500 PICKUP 07 Electronic Control Module; classic style (creased door skin), (LH front under battery), gasoline, 6.0L
YUKON XL 1500 05-06 Electronic Control Module; (LH front under battery)
ESCALADE EXT 05-06 Electronic Control Module; (LH front under battery)
SIERRA 1500 PICKUP 05-06 Electronic Control Module; (LH front under battery), w/o hybrid option; w/o 4.3L
SUBURBAN 2500 05-06 Electronic Control Module; (LH front under battery), 6.0L
HUMMER H2 03 Electronic Control Module; (LH front under battery)
SIERRA 2500 PICKUP 07 Electronic Control Module; classic style (creased door skin), (LH front under battery), gasoline, 6.0L
SIERRA 3500 PICKUP 07 Electronic Control Module; classic style (creased door skin), (LH front under battery), gasoline, 6.0L
SIERRA DENALI 04 Electronic Control Module; (LH front under battery), ID 12602802
SILVERADO 1500 PICKUP 03 Electronic Control Module; (LH front under battery), w/o 4.3L
ESCALADE EXT 03 Electronic Control Module; (LH front under battery), PCM
SIERRA 3500 PICKUP 04 Electronic Control Module; (LH front under battery), gasoline, 6.0L, ID 12602802
SILVERADO 2500 PICKUP 04 Electronic Control Module; (LH front under battery), gasoline, 6.0L, ID 12602802
YUKON XL 2500 03 Electronic Control Module; (LH front under battery), 6.0L
Frequently Asked Questions
Do I need to do any additional programming after I receive it?
No. This module comes fully programmed to the VIN you provide. In most cases, it is a simple plug-and-play installation. Some vehicles may require a security relearn procedure, which is a simple process that can be done without any special tools.
How do I provide my vehicle’s VIN?
After you complete your purchase, you will receive instructions on how to send us your 17-digit Vehicle Identification Number (VIN). We cannot program or ship the module until we receive your VIN.
What is the difference between a PCM, ECM, and ECU?
These terms are often used interchangeably. PCM (Powertrain Control Module) typically controls both the engine and transmission. ECM (Engine Control Module) controls only the engine. On most GM trucks from this era, the single unit functions as a PCM. We use the terms to cover all search possibilities.
Where is this module located on my vehicle?
On most compatible GM trucks and SUVs like the Tahoe, Silverado, and Sierra, the PCM is located in the engine bay on the driver’s side, under or next to the battery and mounted to the fender well.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the original PCM (like code P0601), then this replacement unit will solve the problem. However, if the light is on due to a faulty sensor or other component on the vehicle, you will still need to repair that separate issue.