Restore Your Truck’s Performance and Reliability
When your Sierra, Silverado, or Suburban is down, the job doesn’t get done. A failing Powertrain Control Module (PCM) is the root cause of many frustrating and hard-to-diagnose issues, from a persistent check engine light to a no-start condition that leaves you stranded. This VIN-programmed Engine Control Module is the definitive, hassle-free solution to get your truck back to its reliable, hard-working self and restore your peace of mind.
Common Symptoms of a Failing GM PCM & Your Solution
If you’re experiencing any of the following issues, a faulty engine computer is a likely culprit. This module is the direct-fit solution for problems including:
- Persistent Check Engine Light (especially with codes like P0601, P0602, P0606)
- Engine Stalling or Misfiring
- Poor Fuel Economy
- Erratic or Harsh Transmission Shifting
- No-Start or Hard-Start Conditions
- Failure to Communicate with Scan Tools
Instead of risking a mismatched part from a junkyard, our process ensures you receive a fully compatible unit. We program this 2003-2007 Sierra 3500 PCM 12589463 with the latest GM software updates using your vehicle’s specific VIN, guaranteeing a seamless integration.
Features & Benefits
- ✔ Ready for Installation: This module arrives pre-programmed to your vehicle’s exact VIN. No expensive trips to the dealer for flashing are required.
- ✔ Updated Factory Software: We flash the unit with the newest stable software releases from GM, ensuring optimal engine and transmission performance.
- ✔ Solves Drivability Problems: Eliminates common issues caused by a failing computer, restoring smooth idling, crisp shifting, and proper engine function.
- ✔ Broad Compatibility: This PCM is a direct replacement for multiple service numbers, including 89017750, 12582605, 12602802, and more.
- ✔ Guaranteed Protection: This unit is backed by our one-year replacement warranty.
Expert Technician’s Note: As a tech with over 20 years of experience, I’ve seen the headaches caused by using an incorrect or un-programmed module. It can create a cascade of new error codes and communication failures. The single most important step for a successful repair is ensuring the replacement PCM is programmed specifically for the vehicle it’s going into. Our VIN-programming service handles this critical step for you, making the repair straightforward and effective—the way it should be.
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
Do I need to program this module after I receive it?
No. This PCM arrives at your door fully programmed to your vehicle’s VIN and flashed with the latest GM software. It is ready for installation right out of the box.
How do I provide my vehicle’s VIN?
After you complete your purchase, you will need to provide us with your 17-digit VIN. You can add it to the ‘notes’ section during checkout or reply to your order confirmation email. We cannot ship your part until we have this information.
What’s the difference between a PCM, ECM, and ECU?
These terms are often used interchangeably. PCM (Powertrain Control Module), ECM (Engine Control Module), and ECU (Engine Control Unit) all refer to the main computer that controls the vehicle’s engine and often the transmission as well.
Will this fix my specific check engine light code?
This module is the correct repair for internal processor failure codes, such as P0601 or P0606. While it can resolve many other issues, it’s crucial to have your vehicle properly diagnosed to confirm the PCM is the point of failure before ordering. This 2003-2007 Sierra 3500 PCM 12589463 is a replacement for a faulty original part.
Is this compatible with other part numbers?
Yes, this unit is a direct replacement for several service numbers, including 89017750, 12582605, 12589463, 12602802, 89017734, and 28042802.
How difficult is the installation process?
For most of these GM trucks and SUVs, the PCM is located in the engine bay, under the battery tray. The process involves disconnecting the battery, removing the old unit, and plugging in the new one. In some cases, a simple security relearn procedure (often called a ‘key cycle’) is required, which does not need special tools and instructions can be easily found online.