This ad is for one 12586242 PCM (also known as ECM, engine computer, ECU) that will ship ready to install with the proper calibration programmed to your specific vehicle. This ECM will fit the following applications: 2004 CHEVROLET SILVERADO 1500 V8 4.8L ENGINE 2004 CHEVROLET SILVERADO 1500 V8 5.3L ENGINE 2004 CHEVROLET SILVERADO 1500 HD V8 6.0L ENGINE 2004 CHEVROLET SILVERADO 2500 V8 6.0L ENGINE 2004 CHEVROLET SILVERADO 2500 HD V8 6.0L ENGINE 2004 CHEVROLET SILVERADO 3500 V8 6.0L ENGINE NOTE ***GM used the same computer for both the automatic or manual transmission equipped vehicles. They also used the same computer for the 4 wheel drive or 2 wheel drive applications. The difference between these applications is in the programming of the computer. With your purchase we program the computer to your 17 digit VIN (vehicle identification number) for an exact match to your vehicle. *Programmed to your specific vehicle with your VIN (vehicle identification number) MUST BE PROGRAMMED TO YOUR SPECIFIC VEHICLE TO WORK PROPERLY. PLEASE MAKE SURE TO READ THE ENTIRE ADD TO ENSURE YOU ARE GETTING THE EXACT PART YOU ARE LOOKING FOR. 2004 V8 GM Chevrolet Silverado 1500 Engine Computer Module 776242F Click images to enlarge Description This ad is for one 12586242 PCM (also known as ECM, engine computer, ECU) that will ship ready to install with the proper calibration programmed to your specific vehicle. This ECM will fit the following applications: 2004 CHEVROLET SILVERADO 1500 V8 4.8L ENGINE 2004 CHEVROLET SILVERADO 1500 V8 5.3L ENGINE 2004 CHEVROLET SILVERADO 1500 HD V8 6.0L ENGINE 2004 CHEVROLET SILVERADO 2500 V8 6.0L ENGINE 2004 CHEVROLET SILVERADO 2500 HD V8 6.0L ENGINE 2004 CHEVROLET SILVERADO 3500 V8 6.0L ENGINE NOTE ***GM used the same computer for both the automatic or manual transmission equipped vehicles. They also used the same computer for the 4 wheel drive or 2 wheel drive applications. The difference between these applications is in the programming of the computer. With your purchase we program the computer to your 17 digit VIN (vehicle identification number) for an exact match to your vehicle. *Programmed to your specific vehicle with your VIN (vehicle identification number) MUST BE PROGRAMMED TO YOUR SPECIFIC VEHICLE TO WORK PROPERLY. PLEASE MAKE SURE TO READ THE ENTIRE ADD TO ENSURE YOU ARE GETTING THE EXACT PART YOU ARE LOOKING FOR. Images sell! Get Supersized Images Free Image Hosting Create your brand with Auctiva's Customizable Templates. Attention Sellers - Get Templates Image Hosting, Scheduling at Auctiva.com. Track Page Views With Auctiva's Counter