Get Your GM Truck Back to Peak Performance
Is your dependable GMC, Chevy, or Cadillac suddenly running rough, shifting poorly, or refusing to start? A failing Powertrain Control Module is often the culprit behind these frustrating and unpredictable issues. This isn’t just an inconvenience; it’s a reliability problem that can leave you stranded. This replacement 16263494 PCM is the definitive, hassle-free solution to restore your vehicle’s original performance and get you back on the road with confidence.
Common Symptoms & Your Solution
If your truck or van is experiencing any of the following, a faulty PCM is the likely cause. This module is engineered to resolve these exact problems:
- Persistent Check Engine Light (CEL)
- Diagnostic Trouble Codes (DTCs) related to sensors, emissions, or internal module failure
- Poor or erratic automatic transmission shifting
- Engine stalling, sputtering, or rough idling
- A no-start condition where the engine cranks but won’t fire
- Noticeable decrease in fuel economy
- Failure to pass emissions testing
By replacing your old unit with this pre-programmed 16263494 PCM, you are directly addressing the electronic brain of your vehicle, providing a stable and reliable foundation for your engine and transmission to operate as they were designed.
Features & Benefits
- ✔ Plug & Play Installation: This module arrives programmed to your vehicle’s specific VIN. No expensive trip to the dealership for flashing is required.
- ✔ Updated GM Software: We load the latest, most stable software available from GM, which often corrects original factory drivability issues and improves performance.
- ✔ Restored Drivability: Enjoy smoother shifting, a stable idle, and the responsive throttle your truck had when it was new.
- ✔ Cost-Effective Repair: Get a high-quality, fully functional module without the high markup of a dealership parts counter.
- ✔ Broad Compatibility: A direct replacement for part numbers 16263494, 16265035, 8162634940, and more, ensuring a perfect fit for a wide range of GM trucks, vans, and SUVs.
Expert Insight: The Heart of Your GMT400/GMT800
In these late 90s and early 2000s GM vehicles, the PCM does more than just manage the engine. It’s an integrated Vehicle Control Module (VCM) that controls both the engine and the transmission. The internal components and solder joints from this era are prone to failure from years of heat cycles and vibration. When it fails, communication between the engine and transmission breaks down, leading to the erratic behavior you’re likely experiencing. Installing a solid, properly programmed 16263494 PCM with updated software is the most critical step in ensuring another 20 years of reliable service from your workhorse.
Frequently Asked Questions
Do I need to send you my VIN?
Yes. After placing your order, you must provide us with your vehicle’s 17-digit VIN. We cannot ship your part until we have this information, as we use it to load the correct GM-certified software and calibrations for your specific vehicle.
Is any additional programming required after installation?
In most cases, no. The module is sent ready to install. However, on some vehicles, a Security Relearn procedure (for anti-theft) and/or a CASE Relearn (Crankshaft Variation) may be required. These procedures can often be done without a scan tool and instructions are widely available online or in service manuals.
Will this fix my specific problem?
This PCM will correct issues directly caused by a failing computer. While it solves a vast majority of the symptoms listed, it’s essential to ensure your vehicle’s wiring, sensors, and mechanical components are in good working order. Proper diagnosis is always recommended.
Is this a new or used part?
This is a professionally inspected and prepared original equipment part. Each unit undergoes rigorous testing to ensure it meets or exceeds factory specifications for performance and longevity before being programmed for your vehicle.
Where is the PCM located on my vehicle?
The location varies by model. On most pickups and SUVs like the Yukon, Tahoe, and Silverado, it’s located in the engine compartment, typically on the driver’s side fender well or near the battery. On vans like the Express and Savana, it’s often in the rear of the engine compartment on the driver’s side.