Restore Peak Performance to Your GM Truck or SUV
Is your 2004 GM truck or SUV suffering from frustrating issues like a persistent check engine light, poor fuel mileage, erratic shifting, or a no-start condition? These are classic signs of a failing Powertrain Control Module (PCM), the central computer of your vehicle. Don’t let a faulty module keep your dependable workhorse off the road. This direct-replacement 2004 Tahoe PCM 12586242 is the definitive solution to restore your vehicle’s power, reliability, and efficiency.
We take the guesswork and hassle out of the repair. Simply provide us with your vehicle’s VIN after purchase, and our technicians will program the module with the very latest software updates directly from GM. This ensures perfect compatibility and communication with your vehicle’s specific systems, making installation straightforward and effective.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a failing PCM is the likely culprit:
- Unexplained Check Engine Light (CEL) illumination
- Poor or declining fuel economy
- Engine hesitation, stumbling, or misfiring
- Harsh or incorrect automatic transmission shifts
- Failure to pass emissions testing
- Intermittent or complete no-start conditions
Installing this professionally programmed 2004 Tahoe PCM 12586242 resolves these issues by restoring the precise control over your engine and transmission that your vehicle had when it left the factory.
Features & Benefits
- โ VIN-Programmed for Your Vehicle: We flash this module with the latest GM software updates using your VIN, guaranteeing a perfect match and seamless communication between components.
- โ Ready for Installation: This unit arrives ready to install right out of the box. No need for expensive trips to the dealership for programming.
- โ Restores Original Performance: Eliminates common issues caused by a faulty PCM, such as poor fuel economy, rough idling, and hesitation.
- โ Direct-Fit Replacement: Engineered to match the original service number 12586242 and other compatible numbers for a hassle-free installation.
- โ This unit is backed by our one-year replacement warranty.
An Expert’s Insight
As a technician with over two decades of experience, I’ve seen countless engine problems misdiagnosed. Often, the root cause isn’t a faulty sensor but the PCM itself. The critical step is the programming. A generic, unprogrammed module can create more problems than it solves. That’s why we insist on programming each 2004 Tahoe PCM 12586242 to your specific VIN. It’s not just about selling a part; it’s about providing a complete, reliable solution that works right out of the box.
Guaranteed Compatibility
This computer is a direct replacement for units with service number 12586242 and is compatible with the following service numbers: 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, YFKX, YFXL, YFXM, YFXN, YFXP, and YHTN. It is confirmed to fit the following 2004 GM models:
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
Do I need to do any programming myself?
No. This PCM arrives at your door fully programmed to your vehicle’s specific VIN with the latest GM software. It is ready for installation right out of the box.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information to program the module correctly.
Is this a difficult part to install?
For most of these GM trucks and SUVs, the PCM is located in the engine bay under the battery or next to the airbox. Installation typically involves disconnecting the battery, unplugging the electrical connectors, and removing a few bolts. It is a manageable job for a confident DIYer with basic tools. However, we always recommend consulting a repair manual for your specific vehicle.
Will this fix my ‘Security’ or ‘Anti-Theft’ light?
In most cases, a security relearn procedure will be required after installation to sync the new PCM with your vehicle’s anti-theft system. This is a standard procedure that can typically be done without special tools and instructions can be readily found online for your specific model.
How do I find my original part number?
Your original part number is printed on a sticker on the PCM itself. You can verify it by visually inspecting the module in your vehicle. This unit replaces service number 12586242 and the other compatible numbers listed above.