Restore Your Truck’s Heartbeat and Your Peace of Mind
Is your 2004 Yukon, Sierra, or Escalade running rough, shifting erratically, or refusing to start? A frustrating and persistent Check Engine Light is more than just an annoyance—it’s a sign that your vehicle’s brain, the Powertrain Control Module (PCM), is failing. This isn’t just a part; it’s the central command for your engine’s performance, fuel economy, and reliability. When it falters, it can leave you stranded and facing a costly, complicated trip to the dealership. We offer a better way. This PCM is the definitive solution, arriving at your doorstep fully programmed to your vehicle’s specific VIN, ready to restore the smooth, dependable performance you rely on every day.
Symptoms of a Failing PCM and the Benefits of This Solution
- ✔ Eliminate Check Engine Lights: Finally clear persistent and troubling diagnostic trouble codes (DTCs) like P0601, P0602, P0606, and other communication errors.
- ✔ Restore Smooth Engine Operation: Say goodbye to rough idling, stalling, engine hesitation, and poor acceleration. Regain that factory-smooth power delivery.
- ✔ Correct Poor Fuel Economy: A faulty PCM can’t properly manage fuel delivery, leading to wasted gas. This programmed module restores optimal efficiency, saving you money at the pump.
- ✔ Fix Erratic Shifting: The PCM controls transmission behavior. This unit can resolve issues like harsh shifting, getting stuck in gear, or delayed engagement.
- ✔ Pass Emissions Testing: A properly functioning computer is essential for passing state smog and emissions inspections.
- ✔ No Dealer Visit Required: The most significant benefit! We handle the complex programming using your VIN, saving you hundreds in dealership fees and towing costs.
Guided Installation for Your 2004 Yukon PCM Replacement
Installing your new engine computer is a straightforward process you can confidently complete in your own driveway. Follow these steps to get back on the road quickly.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts. This is a critical first step.
- Locate the Old PCM: On most 2004 GM trucks and SUVs like the Yukon, Tahoe, and Sierra, the PCM is located in the engine bay, on the driver’s side, under or next to the battery tray.
- Disconnect the Connectors: Carefully unclip the wiring harness connectors from the old module. They often have locking tabs that need to be released. Inspect the connectors for any corrosion or damaged pins.
- Remove the Old Unit: Unbolt the old PCM from its mounting bracket. Keep the hardware as you will need it for the new unit.
- Install the New PCM: Mount your new, pre-programmed PCM onto the bracket and securely reconnect the wiring harnesses. Ensure they click firmly into place.
- Reconnect the Battery: Reattach the negative battery terminal and tighten it.
- Perform Security Relearn: Your vehicle’s anti-theft system needs to sync with the new PCM. This is simple: Turn the key to the ‘ON’ position for 10-15 minutes, then turn it ‘OFF’ for 10 seconds. Repeat this cycle 3 times. On the final cycle, the vehicle should start, and the security light will be off.
Guaranteed Fit for Your GM Vehicle
This module is a direct-fit replacement for a wide range of 2004 GM trucks and SUVs. It is essential to match the service number 12586242 or one of the compatible numbers listed below. The ultimate confirmation is programming to your VIN, which we perform before shipping.
Compatible Service Numbers: 12586242, 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, YFKX, YFXL, YFXM, YFXN, YFXP, YHTN
Fits Models Including:
- 2004 Cadillac Escalade, ESV, EXT
- 2004 Chevrolet Avalanche 1500
- 2004 Chevrolet Silverado & Sierra 1500/2500/3500 (Gasoline Engines)
- 2004 Chevrolet SSR
- 2004 Chevrolet Suburban & Yukon XL 1500/2500
- 2004 Chevrolet Tahoe & GMC Yukon
- 2004 Chevrolet Trailblazer EXT & GMC Envoy XL/XUV (5.3L)
- 2004 Buick Rainier (5.3L)
- 2004 Hummer H2
- 2004 Isuzu Ascender (5.3L)
Frequently Asked Questions
Do I need to do any programming or flashing myself?
Absolutely not. The main benefit of our service is that we program the computer to your vehicle’s specific VIN before it leaves our facility. It arrives ready for installation and a simple security relearn procedure.
What is the security relearn procedure?
It’s a simple key-cycling process that syncs the new PCM with your vehicle’s anti-theft system. You just turn the key to the ‘ON’ position for about 10 minutes, ‘OFF’ for 10 seconds, and repeat this three times. After the third cycle, your truck will start right up.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your part until we have this information to ensure perfect programming.
Will this fix my transmission problems?
In many cases, yes. The PCM controls both engine and transmission functions. If your shifting problems are electronic in nature (caused by the computer), this part is very likely to be the solution.
Where is the PCM located on my 2004 Silverado or Yukon?
On most of these GM trucks and full-size SUVs, the PCM is found in the engine compartment on the driver’s side, typically mounted to a bracket underneath the battery tray.