1998-1999 Express 3500 ECM Prog. To VIN – Part #16266645

1998 – 1999 Chevrolet Express 3500 Engine Computer 16266645 – Programmed To Your VIN

Is your Chevrolet Express 3500’s engine performance suffering from poor fuel efficiency, rough idling, or stalling? This pre-programmed engine computer is the solution you need. With this direct replacement part, you can restore your vehicle’s original performance and eliminate diagnostic errors. This module is compatible with the following part numbers: 16266645, 09355699, 9355699, 16250279, 16258815, 09366810, and 9366810.

Key Features & Benefits

• Restores smooth engine performance and eliminates diagnostic errors
• Pre-programmed with the latest updates from GM using your VIN for a precise match
• Easy to install, with no need for additional reprogramming or tuning
• Compatible with a range of Chevrolet models, including Express 3500 and others (see below)
• Built to last, with high-quality components and rigorous testing

Common Problems Solved

This engine computer solves a range of common problems, including stalling, rough idling, poor fuel efficiency, and diagnostic errors. By replacing your old module with this pre-programmed part, you can eliminate these issues and restore your vehicle’s original performance.

Simple Installation Process

1. After purchasing, please provide your VIN so we can finalize the programming before shipping.
2. Disconnect the battery to prevent any accidental starts during installation.
3. Locate the old engine computer module and remove it from its mounting bracket.
4. Install the new module, ensuring all connections are secure and proper.
5. Reconnect the battery and start your vehicle to test the new module.

Guaranteed Fitment