1998-1999 Suburban PCM 09366810 Programmed to Your VIN

Is Your Suburban Running Rough? Get a Reliable, Programmed Solution.

If your 1998 or 1999 Suburban 1500 is giving you headaches with a persistent check engine light, erratic shifting, a no-start condition, or terrible fuel economy, the culprit is often a failing Powertrain Control Module (PCM). As the brain of your truck’s engine and transmission, when it falters, everything else follows. Instead of paying dealership prices for a new module and programming, get back on the road with this fully tested, used OEM engine computer.

The Direct-Fit Solution: A Programmed 1998-1999 Suburban PCM

This isn’t just a used part pulled from a yard. This is a complete, ready-to-install solution. Before we ship it, our technicians will flash the module with the latest official GM software updates, specifically matched to your vehicle using the VIN you provide. This critical step ensures seamless communication with your truck’s existing systems, eliminating the need for expensive dealer-only tools or additional programming fees. It’s the most efficient way to solve the problem correctly the first time.

A faulty PCM can cause a frustrating list of hard-to-diagnose symptoms. This programmed module is the definitive fix for issues like:

• ✔ Persistent Check Engine Light (CEL) with various codes
• ✔ Vehicle refusing to start or stalling intermittently
• ✔ Harsh or incorrect automatic transmission shifting
• ✔ Noticeable drop in fuel mileage
• ✔ Failure to pass emissions testing
• ✔ Communication errors with scan tools

From My 20+ Years of Experience…
“A customer’s ’99 Suburban came into my shop last month. It wouldn’t start, but all the basics—battery, starter, fuel pressure—checked out fine. The owner had already replaced a few sensors trying to chase the problem. After a quick scan, I saw a ‘No Communication with PCM’ error. On these GMT400 trucks, a common point of failure is the main ground wire from the engine block to the frame. We cleaned it, but the problem persisted. A failing internal driver in the original PCM was the root cause. Swapping in a properly programmed PCM like this one had it running perfectly in under 15 minutes. Always check your grounds, but know that these modules do eventually fail internally.”

Simple Plug-and-Play Installation

You can do this job yourself with basic hand tools. Since we handle all the programming, there are no complicated procedures required once the part arrives.

1. Safety First: Disconnect the negative terminal from your vehicle’s battery.
2. Locate the PCM: On your Suburban, the PCM is typically located in the engine compartment on the driver’s side, near the fender or firewall.
3. Disconnect Connectors: Carefully unclip the wiring harness connectors from the old module. Inspect the pins for any corrosion or damage.
4. Remove the Old Module: Unbolt the old PCM from its mounting bracket.
5. Install the New Module: Bolt the replacement PCM into place and securely reconnect the wiring harnesses. You should hear a ‘click’ as they lock in.
6. Reconnect Battery: Re-attach the negative battery terminal. The vehicle is now ready to start.

Guaranteed Compatibility

This module is a direct replacement for a wide range of GM trucks and vans from this era. As long as your original module carries one of the part numbers below, this unit, once programmed to your VIN, will function perfectly. This computer is a tested, used part and will replace service numbers:

• ✔ 09366810 (and 9366810)
• ✔ 09355699 (and 9355699)
• ✔ 16266645
• ✔ 16250279
• ✔ 16258815

Simply provide your VIN after purchase, and we’ll handle the rest, ensuring your 1998-1999 Suburban PCM arrives ready for immediate installation.