Restore Your Van’s Reliability and Performance
Is your Chevrolet Astro or GMC Safari van acting unpredictably? Stalling at stoplights, shifting erratically, or showing a stubborn Check Engine Light can turn any drive into a stressful ordeal. These aren’t just annoyances; they’re signs that your vehicle’s brain—the Powertrain Control Module (PCM)—may be failing. It’s time to stop worrying and start driving with confidence again. This fully programmed engine computer is the definitive solution to restore the smooth, dependable performance you rely on every day.
Warning Signs and How to Overcome Them
A faulty PCM can cause a cascade of confusing issues. By replacing it, you’re not just swapping a part; you’re restoring communication, efficiency, and peace of mind. Here’s what this module resolves:
- ✔ No-Start or Stalling Conditions: Regain the certainty that your van will start every time and stay running.
- ✔ Erratic Transmission Shifting: Eliminates harsh, delayed, or incorrect gear changes by restoring proper communication between the engine and transmission.
- ✔ Persistent Check Engine Light (CEL): Clears critical diagnostic trouble codes (DTCs) like P0601, P0605, or P0606 related to internal module failure.
- ✔ Poor Fuel Economy: Restores precise fuel and timing calculations for optimal MPG, saving you money at the pump.
- ✔ Failed Emissions Tests: Ensures all engine parameters are within spec so you can pass inspection with ease.
- ✔ Communication Loss: Fixes issues where scan tools cannot communicate with the PCM, a clear sign of module failure.
Expert Tip: Before you place your order, take a moment to double-check your Vehicle Identification Number (VIN). An accurate VIN is the key to a perfect programming job. When you install the new module, take a close look at the wiring harness connectors. Ensure they are clean, dry, and free of any corrosion or bent pins to guarantee a solid connection.
Guided Installation to Restore Your Drive
You don’t need to be a master mechanic to complete this repair. Our Programmed 1998-1999 Astro PCM is designed for a straightforward installation. Just provide your VIN at checkout, and we’ll handle the complex programming. The module will arrive ready to install. Follow these simple steps:
- Safety First: Begin by disconnecting the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Old PCM: On your Astro/Safari, you’ll find the module in the engine compartment on the driver’s side, typically near the battery.
- Disconnect with Care: Gently unplug the electrical connectors from the old module. There are typically release tabs that need to be pressed. Avoid pulling on the wires themselves.
- Swap the Modules: Unbolt the old PCM from its mounting bracket and set it aside. Secure the new, pre-programmed module in its place.
- Reconnect and Power Up: Firmly plug the wiring harnesses into the new PCM until they click into place. Reconnect the negative battery terminal.
- Perform Security Relearn: Your vehicle’s anti-theft system may need to be synchronized. This is usually a simple process: turn the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’ for 10 seconds, and repeat two more times. Your van should then start normally.
Tailored Fit for Your GM Truck or Van
This module is a direct replacement for part numbers 09355699, 16250279, and 09366810. It is guaranteed to fit the following vehicles:
- Chevrolet Astro: 1998-1999
- GMC Safari: 1998-1999
- Cadillac Escalade: 1999
- Chevrolet/GMC Pickups (1500, 2500, 3500): 1998-1999 (Gasoline engines)
- Chevrolet/GMC Suburban (1500, 2500): 1998-1999 (Gasoline engines)
- Chevrolet Tahoe / GMC Yukon: 1998-1999
- Chevrolet Express / GMC Savana Vans (1500, 2500, 3500): 1998 (Gasoline engines)
- Chevrolet S10 / GMC Sonoma: 1998 (4.3L V6)
- Chevrolet Blazer / GMC Jimmy / Oldsmobile Bravada: 1998
- GMC Envoy: 1998
- Isuzu Hombre: 1998 (4.3L V6)
By ordering our Programmed 1998-1999 Astro PCM, you’re choosing a hassle-free path to a reliable vehicle. Let us handle the technical details so you can get back on the road with the performance and peace of mind you deserve.
Frequently Asked Questions
What does ‘VIN Programmed’ mean?
It means we flash the module with your vehicle’s unique Vehicle Identification Number (VIN) and the latest GM-certified software. This ensures the computer works perfectly with your van’s specific engine, transmission, and options, just like the original from the factory.
Do I need to take my van to a dealer after installation?
No! Because we program the module before shipping, you can avoid a trip to the dealership and their expensive programming fees. In most cases, you will only need to perform a simple security relearn procedure with your key, which takes about 30 minutes.
Where is the PCM located on my 1999 Astro?
The Powertrain Control Module is located in the engine bay on the driver’s side, mounted near the battery and the fender.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your VIN. We cannot ship your order until we receive this information, as the programming is specific to your vehicle.
What if my original part number is slightly different?
This module is a compatible replacement for several part numbers, including 16250279 and 09366810. As long as your vehicle is on the compatibility list, this module will function correctly once programmed to your VIN.