Restore Peak Performance to Your GM Truck or Van
Is your 1998-1999 GMC Savana, Chevy Express, or other GM truck experiencing perplexing issues like a no-start condition, erratic shifting, a persistent check engine light, or poor fuel economy? These are classic symptoms of a failing Powertrain Control Module (PCM). The PCM is the brain of your vehicle, managing critical engine and transmission functions. When it fails, it can cause a wide range of problems that can sideline your vehicle. This replacement PCM, part number 09355699, is the reliable and cost-effective solution to get you back on the road with confidence.
From the Diagnostic Bay
I once had a 1999 Chevy Suburban come into the shop that had its owner chasing his tail for weeks. The truck would randomly stall and refuse to restart for an hour. The owner had replaced the fuel pump, crank sensor, and ignition module. When we hooked up our scanner, we found intermittent communication loss with the PCM. A quick check of the main power and ground pins at the PCM connector showed they were solid. The culprit was internal failure within the original module. After installing a VIN-programmed PCM just like this one and performing a quick security relearn, the truck ran perfectly. It’s a reminder that the PCM itself can be the source of the most frustrating intermittent issues.
Common Symptoms of a Failing GM PCM
- ✔ Check Engine Light is on with various communication or sensor-related fault codes.
- ✔ Engine cranks but will not start.
- ✔ Rough idling, stalling, or hesitation during acceleration.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ The vehicle’s anti-theft or security light is illuminated.
- ✔ Failure to pass an emissions test.
The Right Solution: A Programmed Savana 2500 PCM
Finding a direct replacement for an older vehicle’s computer can be a challenge. Our solution simplifies the process. This is a thoroughly inspected, used OEM PCM that we program specifically for your vehicle before it ships. By providing us with your Vehicle Identification Number (VIN) at checkout, we ensure the module arrives with the correct factory calibration and the latest available software updates from General Motors. This eliminates the need for expensive dealership programming, making it a true plug-and-play repair for many applications. This process ensures your Savana 2500 PCM will correctly manage all engine and transmission parameters for optimal performance and reliability.
This module is a direct replacement for multiple part numbers, including 09355699, 16266645, 16250279, 16258815, 09366810, and 9366810. It fits a wide variety of popular GM trucks, vans, and SUVs from 1998 and 1999, such as the Chevrolet Silverado, GMC Sierra, Tahoe, Yukon, Suburban, and many others listed in the fitment guide. Please verify your original part number to ensure compatibility.
Installation Note
While this module comes programmed to your VIN, many GM vehicles of this era are equipped with a Passlock or Passkey anti-theft system. After installation, you may need to perform a simple security relearn procedure, which typically involves a sequence of turning the key in the ignition. This procedure can be done without any special tools and instructions are widely available.
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) contains crucial information about your vehicle’s specific options, engine, transmission, and emissions equipment. We use the VIN to load the exact GM-certified software and calibrations onto the PCM, ensuring it functions perfectly with your truck or van right out of the box.
Is this a plug-and-play part?
Yes, for the most part. Because we program the module to your VIN, it eliminates the need for dealership programming. However, you may need to perform a simple security relearn procedure after installation, which takes about 30 minutes and requires only your vehicle’s key.
What is the difference between a PCM and an ECM?
The terms are often used interchangeably. ECM stands for Engine Control Module, while PCM stands for Powertrain Control Module. A PCM is a more advanced type of ECM that controls both the engine and the transmission functions, which is standard on the vehicles this part fits.
Will this fix my check engine light?
If the check engine light is caused by a faulty PCM, then yes, this part will resolve the issue. It is essential to properly diagnose the root cause of the fault codes before replacing any parts. This PCM will solve problems related to internal module failure or communication errors.
Is this a new part?
This is a quality, inspected used OEM part sourced from a salvaged vehicle. Each unit is tested to ensure full functionality before being programmed and shipped, offering an affordable and reliable alternative to a new, and often unavailable, dealer part.