2003 Sierra 3500 PCM Powertrain Control Module 89017733

Restore Your Truck’s Performance!

Get your 2003 Sierra 3500 running right again with this VIN-programmed Powertrain Control Module. It’s a direct-fit solution for engine stalling, rough shifting, and check engine light issues. Pre-loaded with the latest GM software for a simple installation. Order today to restore your truck’s power and reliability!

$134.95

+11.99 USPS Priority Shipping

Availability: In stock



SKU: 590-06724-176 Categories: ,
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The Brain of Your Truck: Restoring Power and Reliability

The Powertrain Control Module (PCM) is the central command center for your 2003 GMC Sierra 3500. It’s not just a component; it’s the brain that meticulously manages everything from fuel injection and ignition timing to transmission shift points and emissions systems. When this critical part begins to fail, it can cause a cascade of confusing and frustrating problems, leaving your powerful workhorse feeling sluggish, unreliable, or even completely inoperable. This replacement PCM, part number 89017733, is the definitive solution to restore your truck’s factory performance and dependability.

Diagnosing Your 2003 Sierra 3500 PCM

A failing powertrain control module can manifest in ways that often mimic other component failures, making diagnosis tricky. If your Sierra 3500, or another compatible GM vehicle, is experiencing a combination of the issues below, the PCM is a primary suspect. Ignoring these signs can lead to further component damage, poor fuel economy, and failed emissions tests.

From the Diagnostic Bay

We had a 2003 Silverado 2500 with the 8.1L V8 come in with a harsh 1-2 shift and intermittent stalling at idle. The owner had already replaced the transmission speed sensors and the throttle position sensor based on forum advice, with no improvement. After hooking up our scanner, we noticed erratic data streams from multiple sensors that didn’t correlate with the engine’s actual state. The voltage references were fluctuating. Instead of chasing ghosts and replacing more good parts, we inspected the PCM. A quick swap with a known-good, programmed module confirmed our suspicion: the original PCM’s internal processor was failing. It’s a classic case where the root cause isn’t a sensor, but the computer interpreting the data.

Common Symptoms of a Failing PCM

  • ✔ Check Engine Light: An illuminated or flashing Check Engine Light (CEL) is one of the most common indicators, often with codes related to multiple, unrelated sensors or communication errors (U-codes).
  • ✔ Engine Performance Issues: You may experience rough idling, stalling, hesitation during acceleration, misfires, or a significant loss of power.
  • ✔ Poor Fuel Economy: If the PCM cannot properly regulate the air-fuel mixture, your truck’s gas mileage can plummet unexpectedly.
  • ✔ Transmission Problems: Harsh or erratic shifting, getting stuck in a single gear (limp mode), or failure to shift are classic signs, as the PCM directly controls transmission solenoids.
  • ✔ No-Start Condition: The vehicle may crank but refuse to start. This can happen if the PCM fails to command the fuel pump or ignition coils to operate.
  • ✔ Intermittent Electrical Problems: Gauges behaving erratically or cooling fans running constantly (or not at all) can point to a faulty module.

A Solution Programmed for Your Vehicle

This isn’t just a generic, off-the-shelf part. To ensure a seamless and correct installation, we program each module specifically to your truck using the Vehicle Identification Number (VIN) you provide. This critical step loads all the GM-specific software and calibrations for your Sierra 3500’s exact configuration, including engine size, transmission type, and emissions equipment. We install the latest GM-released updates, which can often resolve factory-known drivability issues. This process ensures that once installed, the new PCM communicates flawlessly with all other modules in your vehicle, making it a true plug-and-play solution.

This module is a direct replacement for multiple service numbers, including 12581565, 12576106, and 89017733, and fits a wide range of GM trucks, vans, and SUVs from the 2003-2004 era. Please verify your vehicle in the compatibility list to ensure a perfect match.

Frequently Asked Questions

Why do you need my VIN?

Your vehicle’s VIN (Vehicle Identification Number) is like its fingerprint. It tells us the exact specifications of your truck—engine, transmission, axle ratio, tire size, and emissions options. We use this information to load the precise GM factory software onto the PCM, ensuring it works perfectly with your vehicle’s systems right out of the box.

Is this part difficult to install?

Physically replacing the PCM is straightforward for someone with basic mechanical skills. On most trucks like the 2003 Sierra 3500, it’s located under the hood on the driver’s side, near the battery. The process involves disconnecting the battery, unplugging the electrical connectors, and unbolting the module. The most important part is the electronic relearn procedure that may be required after installation.

Will I need to do anything after installing the module?

In many cases, you will need to perform a Security Relearn Procedure (also known as a Passlock or anti-theft relearn) to allow the vehicle to start. This procedure syncs the new PCM with your vehicle’s anti-theft system and can typically be done without special tools. A Crankshaft Variation Relearn (CASE Relearn) may also be necessary with a scan tool to prevent a misfire code. We recommend consulting a service manual for your specific vehicle’s procedure.

How do I know this is the correct part for my vehicle?

This PCM is compatible with a wide range of GM vehicles. The best way to confirm fitment is to match the service number on your original module to one of the numbers listed in our description (e.g., 12581565, 89017733). You can also use the compatibility chart provided on this page. If you are still unsure, please contact us with your VIN before ordering.

What happens if I don’t provide a VIN?

Providing your VIN is a required step for this purchase. We cannot ship the module without programming it, as an unprogrammed module will not start or run your vehicle correctly. This ensures you receive a functional, ready-to-install part.

Conditions & Options

Programmed to your VIN GM: 12576106

Year

Genuine OEM

Yes

MPN

89017733

Interchange part number

Condition

Refurbished

Model

SIERRA 3500

Year

2003

Brand

GM

Manufacturer Part Number

, , , , , , , , ,

GTIN

Does not apply

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