Before Programming Procedure
WARNING: This page is about a different car, the 2001 GMC Safari and 2001 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
Ensure that all connections are secure at following locations:
- Off-Board Programming Adapter.
- Tech 2(R).
- Powertrain Control Module.
- Techline(R) terminal.