Get Your Van Running Right Again
Is your trusty GMC Safari giving you headaches? Unpredictable stalling, a persistent check engine light, or rough running can sideline your van, disrupting your work or family plans. A failing Powertrain Control Module (PCM) is often the culprit behind these frustrating and complex electronic issues. This replacement PCM is the definitive, reliable solution to restore your vehicle’s performance and dependability. It arrives pre-programmed to your van’s specific Vehicle Identification Number (VIN), ensuring it works correctly right out of the box.
Common Symptoms of a Failing PCM & Your Direct Solution
If you’re experiencing any of the following, a faulty engine computer is the likely cause. This module is engineered to resolve these exact problems:
- Persistent Check Engine Light: Especially with communication error codes or internal module failure codes (e.g., P0601, P0605, P0606).
- Engine Stalling or Misfiring: Random stalling at stops or hesitation during acceleration.
- No-Start Condition: The engine cranks but won’t start, and you’ve already ruled out fuel and spark issues.
- Poor Fuel Economy: A sudden and unexplained drop in your van’s MPG.
- Erratic Transmission Shifting: Harsh shifts, or getting stuck in a gear, often caused by incorrect signals from the PCM.
Instead of struggling with a problematic original unit, this professionally programmed 1999 GMC Safari PCM provides a fresh start, loaded with the latest GM software updates to optimize performance and efficiency.
Features & Benefits
- โ Plug-and-Play Solution: This module is professionally flashed with your vehicle’s unique VIN, eliminating the need for an expensive trip to the dealership for programming.
- โ Updated GM Software: We install the newest factory calibrations from General Motors, which can resolve original bugs and improve engine and transmission performance.
- โ Guaranteed Compatibility: A direct replacement for part numbers 16250279, 09366810, and 09355699, ensuring a perfect fit and function.
- โ Restored Drivability: Solves common issues like rough idle, stalling, and poor performance, making your Safari reliable once more.
- โ Peace of Mind Included: This unit is backed by our one-year replacement warranty, giving you confidence in your repair.
A Technician’s Insight: Many people don’t realize that on these older GM vans, the PCM is the central hub for everything. It’s not just about fuel and spark; it controls transmission shift points, torque converter lockup, and even communicates with the anti-lock brake system. When you install a properly programmed 1999 GMC Safari PCM with the latest software, you’re not just fixing one problemโyou’re restoring the entire powertrain’s communication network. This often results in smoother shifts and a more responsive throttle that you can feel immediately.
Frequently Asked Questions
Do I need to program this module?
No. We handle all the programming for you before shipment. Simply provide us with your vehicle’s 17-digit VIN during or after checkout, and the module will arrive ready for installation.
What do I need to do after installing the PCM?
In most cases for these vehicles, you will need to perform a Security Relearn procedure, which can be done without special tools and typically takes 10-30 minutes. Instructions are readily available online. Some vehicles may also require a Crankshaft Variation Relearn (CASE Relearn) which requires a compatible scan tool to complete.
Is this the correct part for my vehicle?
This module fits a wide range of 1998-1999 GM trucks, vans, and SUVs. Please check the detailed fitment list on this page and match your original part number to 16250279, 09366810, or 09355699. Providing your VIN ensures we send you the exact, correct unit for your 1999 GMC Safari PCM or other compatible model.
Where do I find my VIN?
Your 17-digit VIN can be found on a sticker on the driver’s side door jamb, on a metal plate on the driver’s side of the dashboard (visible through the windshield), or on your vehicle’s registration and insurance documents.
How long does the programming process take?
Programming is typically completed within 1-2 business days of receiving your VIN, after which your order will be shipped.