Is Your Work Van or Truck Sidelined? Get It Back on the Job.
A failing Powertrain Control Module (PCM) in your Chevy Express, Suburban, or GMC Sierra isn’t just an inconvenience—it’s a roadblock. When your vehicle is your livelihood, downtime means lost money and major headaches. If you’re dealing with frustrating no-start conditions, erratic engine behavior, or a persistent check engine light, you’ve come to the right place. This genuine OEM engine computer is the reliable, straightforward solution to restore your vehicle’s performance and get you back on the road with confidence.
Common Symptoms & Your Solution
A faulty PCM can manifest in numerous ways, often mimicking other component failures. If you’re experiencing any of the following, a failing computer is a likely culprit:
- Engine cranks but refuses to start
- Sudden stalling or rough, inconsistent idling
- Poor acceleration and a noticeable loss of power
- Decreased fuel economy
- Harsh or erratic automatic transmission shifting
- Check Engine Light with communication-related codes (e.g., P0601, P0605)
This isn’t just a replacement part; it’s a complete solution. We take a tested, genuine GM module and program it specifically to your vehicle’s unique Vehicle Identification Number (VIN). This crucial step ensures that the computer communicates perfectly with your engine, transmission, and all related systems, just as it did from the factory. By ordering our Programmed 1999 Chevy Express 1500 PCM, you are choosing a direct path to fixing the problem correctly the first time.
Features & Benefits
- ✔ VIN-Programmed for Your Vehicle: We flash the unit with the latest GM software updates using your VIN. This eliminates compatibility issues and ensures a true plug-and-play installation.
- ✔ Restored Engine Performance: Get back the smooth idle, crisp acceleration, and optimal fuel efficiency your truck was designed to deliver.
- ✔ Cost-Effective Solution: Avoid the high costs and programming fees of a dealership by getting a pre-programmed, ready-to-install unit shipped directly to you.
- ✔ Proven OEM Reliability: This is a genuine used OEM part, meaning it was built to GM’s rigorous standards for durability and longevity, far surpassing the quality of many aftermarket alternatives.
- ✔ Broad Compatibility: While perfect for the Chevy Express, this module (service ID 09355699) fits a wide range of popular 1998-1999 GM trucks, vans, and SUVs.
- ✔ Guaranteed Performance: This unit is backed by our one-year replacement warranty for your peace of mind.
An Expert’s Note on GM Anti-Theft Systems
Many owners of these late-90s GM vehicles try to save money by pulling a computer from a salvage yard, only to find their truck still won’t start. This is almost always due to the factory Vehicle Anti-Theft System (VATS) or Passlock system. The PCM is married to the original vehicle’s security system. Our VIN programming service correctly configures the module for your specific vehicle, allowing it to work with your existing keys and security components. In most cases, this allows for an immediate start-up, though some vehicles may require a simple, 10-30 minute key relearn procedure that you can do yourself right in your driveway—no special tools needed.
Don’t let a bad computer dictate your schedule. Take control with a reliable, properly configured PCM that’s ready to get your workhorse back in service. This Programmed 1999 Chevy Express 1500 PCM is the smart choice for a lasting repair.
Frequently Asked Questions
What is a PCM and what does it do?
The Powertrain Control Module (PCM) is the central computer of your vehicle. It controls all aspects of engine and transmission function, including fuel injection, ignition timing, spark, and shift points to ensure optimal performance, fuel economy, and emissions.
Where do I provide my vehicle’s VIN?
After you complete your purchase, you will need to send us your 17-digit VIN. You can typically add it as a note during checkout or send it to us in a message referencing your order number. We cannot ship your part until we receive the VIN.
Will I need to do anything after installing this PCM?
Because this unit is programmed to your VIN, it is designed for a plug-and-play installation. However, some GM vehicles may require a simple security relearn procedure (which takes 10-30 minutes and requires only your ignition key) to sync with your anti-theft system. On some models, a Crankshaft Variation Relearn (CASE) may be needed with a scan tool to clear a specific trouble code, but the vehicle will run and drive without it.
Is this a new part?
No, this is a high-quality, used OEM computer that has been sourced from a salvaged vehicle, thoroughly inspected, and then programmed with the latest software for your specific vehicle.
How can I be sure my old PCM is the problem?
While the symptoms listed above are strong indicators, it’s always best to have a professional diagnosis. Common signs include a complete lack of communication with a scan tool, internal circuit error codes (like P0601), or having ruled out all other potential causes for your running issues.
Will this fit vehicles other than a 1999 Chevy Express 1500?
Yes. This PCM, which interchanges with part number 09355699, fits a very wide range of 1998-1999 GM trucks, vans, and SUVs, including the Suburban, Tahoe, Yukon, Savana, and various pickups. Please check the detailed fitment list on this page to confirm compatibility with your exact model.