Get Your GM Truck or SUV Back on the Road, Fast.
Is your 2004 Cadillac Escalade, Sierra, or Silverado plagued by frustrating issues like a persistent check engine light, rough idling, stalling, or a no-start condition? These are classic signs of a failing Powertrain Control Module (PCM), the central computer that manages your vehicle’s engine and transmission. This isn’t just a replacement part; it’s a complete, pre-programmed solution designed to restore your vehicle’s performance and reliability right out of the box.
Common Symptoms & Your Definitive Solution
A faulty PCM can cause a wide range of performance problems, leaving you stranded and facing a complex repair. If you’re experiencing any of the following, this module is the solution you need:
- Erratic or harsh transmission shifting
- Sudden stalling or difficulty starting
- Noticeable drop in fuel economy
- Check Engine Light with codes like P0601, P0602, or P0606
- Poor engine performance and hesitation
We eliminate the biggest hurdle in this repair: the programming. Simply provide us with your vehicle’s 17-digit VIN during checkout, and our experts will flash this module with the latest official GM software for your exact vehicle. This ensures a seamless installation and restores the precise performance your truck or SUV was built for. This is the most reliable way to fix your vehicle without an expensive trip to the dealership.
Features & Benefits
- ✔ VIN-Programmed for a Perfect Match: We flash this module using your vehicle’s VIN, loading the latest GM software updates. This guarantees perfect communication with your vehicle’s systems, eliminating compatibility issues.
- ✔ Plug & Drive Installation: Because it arrives programmed for your vehicle, this PCM is ready to install upon arrival. This simplifies the repair for you or your mechanic, saving time and labor costs.
- ✔ Restores Peak Performance: A correctly functioning computer is essential for optimal engine power, smooth transmission shifts, and efficient fuel consumption. This module brings back the performance and reliability you expect.
- ✔ Clears Stubborn Engine Codes: The perfect fix for internal module failure codes (DTCs) like P0601 (Internal Control Module Memory Check Sum Error) that cannot be resolved with other repairs.
- ✔ Broad GM Compatibility: This is a direct replacement for service number 12586242 and other numbers listed below, fitting a wide range of popular 2004 GM trucks and SUVs.
- ✔ Your Purchase is Protected: This unit is backed by our one-year replacement warranty.
An Expert’s Note on Programming: As a technician with two decades of diagnostic experience, I can’t overstate the importance of proper VIN programming. A PCM is not a ‘one-size-fits-all’ component. It needs to communicate flawlessly with the anti-theft system, instrument cluster, and transmission controller. Our VIN-specific flashing ensures all these digital ‘handshakes’ happen correctly, just as the factory intended. This process is the key difference between a quick fix and a lasting, reliable repair for your vehicle.
RAINIER 04 Electronic Control Module; 5.3L (next to air box), ID YFXL
SSR 04 Electronic Control Module; (next to air box), ID YHTN
SIERRA DENALI 04 Electronic Control Module; (LH front under battery), ID 12586242
TRAILBLAZER EXT 04 Electronic Control Module; 5.3L (next to air box), ID YFKX
ENVOY XL 04 Electronic Control Module; 5.3L (next to air box), ID YFKH
RAINIER 04 Electronic Control Module; 5.3L (next to air box), ID YFKJ
SSR 04 Electronic Control Module; (next to air box), ID YFKD
SSR 04 Electronic Control Module; (next to air box), ID YFKX
SSR 04 Electronic Control Module; (next to air box), ID YFXL
TRAILBLAZER EXT 04 Electronic Control Module; 5.3L (next to air box), ID YFXP
ENVOY XL 04 Electronic Control Module; 5.3L (next to air box), ID YFXL
RAINIER 04 Electronic Control Module; 5.3L (next to air box), ID YFXM
RAINIER 04 Electronic Control Module; 5.3L (next to air box), ID YFXN
SIERRA 1500 PICKUP 04 Electronic Control Module; (LH front under battery), w/o hybrid option; w/o 4.3L; ID 12586242
SILVERADO 3500 PICKUP 04 Electronic Control Module; (LH front under battery), gasoline, 6.0L, ID 12586242
SUBURBAN 2500 04 Electronic Control Module; (LH front under battery), 6.0L, ID 12586242
TRAILBLAZER EXT 04 Electronic Control Module; 5.3L (next to air box), ID YFXN
ENVOY XUV 04 Electronic Control Module; 5.3L (next to air box), ID YFKH
ENVOY XUV 04 Electronic Control Module; 5.3L (next to air box), ID YFXL
SSR 04 Electronic Control Module; (next to air box), ID YFKF
SSR 04 Electronic Control Module; (next to air box), ID YFKH
SSR 04 Electronic Control Module; (next to air box), ID YFXM
SSR 04 Electronic Control Module; (next to air box), ID YFXN
SILVERADO 1500 PICKUP 04 Electronic Control Module; (LH front under battery), w/o hybrid option; w/o 4.3L; ID 12586242
YUKON 04 Electronic Control Module; (LH front under battery), ID 12586242
ENVOY XL 04 Electronic Control Module; 5.3L (next to air box), ID YFKX
ESCALADE 04 Electronic Control Module; (LH front under battery), ID 12586242
AVALANCHE 1500 04 Electronic Control Module; (LH front under battery), ID 12586242
ENVOY XUV 04 Electronic Control Module; 5.3L (next to air box), ID YFXP
ESCALADE ESV 04 Electronic Control Module; (LH front under battery), ID 12586242
RAINIER 04 Electronic Control Module; 5.3L (next to air box), ID YFXP
ISUZU ASCENDER 04 Electronic Control Module; (LH engine), 5.3L
ENVOY XL 04 Electronic Control Module; 5.3L (next to air box), ID YFXM
ENVOY XUV 04 Electronic Control Module; 5.3L (next to air box), ID YHTN
RAINIER 04 Electronic Control Module; 5.3L (next to air box), ID YHTN
TAHOE 04 Electronic Control Module; (LH front under battery), ID 12586242
TRAILBLAZER EXT 04 Electronic Control Module; 5.3L (next to air box), ID YHTN
ENVOY XL 04 Electronic Control Module; 5.3L (next to air box), ID YFKD
TRAILBLAZER EXT 04 Electronic Control Module; 5.3L (next to air box), ID YFKD
TRAILBLAZER EXT 04 Electronic Control Module; 5.3L (next to air box), ID YFXL
ENVOY XUV 04 Electronic Control Module; 5.3L (next to air box), ID YFKJ
RAINIER 04 Electronic Control Module; 5.3L (next to air box), ID YFKD
TRAILBLAZER EXT 04 Electronic Control Module; 5.3L (next to air box), ID YFKJ
ENVOY XL 04 Electronic Control Module; 5.3L (next to air box), ID YFKF
HUMMER H2 04 Electronic Control Module; (LH front under battery), SUT
SSR 04 Electronic Control Module; (next to air box), ID YFKJ
SUBURBAN 1500 04 Electronic Control Module; (LH front under battery), ID 12586242
ENVOY XL 04 Electronic Control Module; 5.3L (next to air box), ID YFXP
ENVOY XUV 04 Electronic Control Module; 5.3L (next to air box), ID YFXM
RAINIER 04 Electronic Control Module; 5.3L (next to air box), ID YFKH
TRAILBLAZER EXT 04 Electronic Control Module; 5.3L (next to air box), ID YFKF
ENVOY XL 04 Electronic Control Module; 5.3L (next to air box), ID YFKJ
SILVERADO 2500 PICKUP 04 Electronic Control Module; (LH front under battery), gasoline, 6.0L, ID 12586242
TRAILBLAZER EXT 04 Electronic Control Module; 5.3L (next to air box), ID YFKH
YUKON XL 1500 04 Electronic Control Module; (LH front under battery), ID 12586242
RAINIER 04 Electronic Control Module; 5.3L (next to air box), ID YFKF
ENVOY XL 04 Electronic Control Module; 5.3L (next to air box), ID YFXN
ENVOY XUV 04 Electronic Control Module; 5.3L (next to air box), ID YFKX
SIERRA 2500 PICKUP 04 Electronic Control Module; (LH front under battery), gasoline, 6.0L, ID 12586242
SIERRA 3500 PICKUP 04 Electronic Control Module; (LH front under battery), gasoline, 6.0L, ID 12586242
TRAILBLAZER EXT 04 Electronic Control Module; 5.3L (next to air box), ID YFXM
ENVOY XUV 04 Electronic Control Module; 5.3L (next to air box), ID YFKD
ENVOY XUV 04 Electronic Control Module; 5.3L (next to air box), ID YFKF
ENVOY XUV 04 Electronic Control Module; 5.3L (next to air box), ID YFXN
ESCALADE EXT 04 Electronic Control Module; (LH front under battery), ID 12586242
RAINIER 04 Electronic Control Module; 5.3L (next to air box), ID YFKX
SSR 04 Electronic Control Module; (next to air box), ID YFXP
YUKON XL 2500 04 Electronic Control Module; (LH front under battery), 6.0L, ID 12586242
Frequently Asked Questions
What information do you need to program my PCM?
After purchase, we require your 17-digit Vehicle Identification Number (VIN). This allows us to flash the module with the exact software and calibrations for your 2004 Escalade, Silverado, or other compatible GM vehicle.
Is any additional programming needed after installation?
In most cases, no. Our VIN programming makes this a plug-and-play part. However, some vehicles may require a simple security relearn procedure (often called a CASE relearn), which can be performed by a qualified technician with a scan tool.
Where is this module located on my vehicle?
On most compatible trucks and SUVs like the Escalade, Sierra, and Tahoe, the PCM is located in the engine bay on the driver’s side, underneath the battery tray.
Will this fix my specific check engine light?
If your vehicle has been properly diagnosed with a faulty PCM, this module is the correct solution. It specifically addresses internal processor failure codes like P0601 and P0606. Always confirm the diagnosis before ordering.
Do I need to send my old computer (core) back?
No, there is no core charge or need to return your old module. This is an outright purchase.
My part number is slightly different. Will this still work?
Yes, this module replaces multiple service numbers including 12586242, 19299226, 89017738, and many others listed above. As long as your vehicle model is on our compatibility list, our VIN programming ensures it will function correctly.