Is your truck or SUV suffering from frustrating electrical gremlins, a persistent check engine light, or poor performance? A failing Powertrain Control Module (PCM) is often the culprit, leaving you stranded and stressed. This isn’t just a replacement part; it’s the brain of your vehicle, fully revitalized and ready to restore the dependable performance you rely on. We program this unit specifically to your vehicle’s VIN before it ships, ensuring a seamless installation process.
Common Symptoms & Your Direct Solution
If you’re experiencing any of the following issues, a faulty PCM is the likely cause. This pre-programmed module is the definitive solution to get your vehicle running properly again.
- Persistent Check Engine Light (CEL)
- Error codes such as P0601, P0602, P0606
- Rough or erratic engine idle
- Vehicle stalling unexpectedly
- Poor fuel economy
- Harsh or incorrect transmission shifting
- No-start condition where the engine cranks but won’t fire
By installing our correctly programmed 2003-2006 Avalanche 1500 PCM, you are directly addressing the root cause of these problems, restoring communication between all your vehicle’s critical systems.
Features & Benefits
- ✔ VIN-Specific Programming: We flash this module with the latest GM software updates using your vehicle’s VIN. This ensures perfect compatibility and function right out of the box, eliminating the need for an expensive trip to the dealership.
- ✔ Restored Engine Performance: A correctly programmed PCM ensures optimal fuel delivery, ignition timing, and emission control, bringing back the smooth power and efficiency your engine was designed for.
- ✔ Corrects Transmission Issues: Solves common shifting problems, such as harsh shifts or gear hunting, by restoring proper communication between the engine and transmission.
- ✔ Simple Installation: Designed for a direct fit, making the swap straightforward for a DIY mechanic or your trusted technician. After installation, a simple security relearn procedure is typically all that’s needed.
- ✔ Guaranteed Compatibility: This unit is a direct replacement for multiple service numbers, including 12589463, 89017750, 12582605, and more. See our full fitment list below.
- ✔ One-Year Replacement Coverage: This unit is backed by our one-year replacement warranty, giving you confidence in your purchase.
Expert Insight from a 20-Year Veteran Technician
I’ve seen countless issues caused by generic, non-programmed modules. A PCM isn’t a one-size-fits-all part. It needs to know every detail about your vehicle—from the engine size to the axle ratio. Our VIN-based programming isn’t a convenience; it’s a necessity for ensuring your truck runs exactly as the engineers at GM intended. We handle this critical step for you, so you’re installing a solution, not another problem. This is the correct way to replace the brain of your 2003-2006 Avalanche 1500 PCM.
After you complete your purchase, please provide us with your vehicle’s VIN. This is a critical step that allows us to program the module specifically for your truck or SUV before we ship it. This attention to detail ensures you get the right part, ready to install.
ESCALADE 04 Electronic Control Module; (LH front under battery), ID 12602802
ESCALADE EXT 04 Electronic Control Module; (LH front under battery), ID 12602802
HUMMER H2 04 Electronic Control Module; (LH front under battery), SUV
SIERRA 3500 PICKUP 03 Electronic Control Module; (LH front under battery), gasoline, 6.0L
TAHOE 04 Electronic Control Module; (LH front under battery), ID 12602802
YUKON XL 2500 04 Electronic Control Module; (LH front under battery), 6.0L, ID 12602802
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
How do I provide my VIN number?
After you place your order, you can send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your module without it.
Is any additional programming required after installation?
No dealership programming is needed. However, on most GM vehicles of this era, you will need to perform a security relearn procedure. This is a simple process that pairs the new PCM to your vehicle’s anti-theft system and can be done without special tools. It typically involves turning the key to the ‘ON’ position for 10-15 minutes, three times in a row.
Do I need to send my old PCM back?
No core charge or return is required for this part. You can keep your old module.
Will this fix my specific problem?
This PCM is a direct solution for issues related to a faulty module, such as internal processor errors (P0601) or communication failures. While it solves a wide range of common symptoms, we always recommend a proper diagnosis by a qualified mechanic to confirm the PCM is the point of failure before ordering.
Is this a brand new part?
This is a high-quality, tested, and verified OEM component that has been programmed with the latest software for your vehicle. It is guaranteed to meet or exceed original factory performance.