To find the transmission code for your 2003 Chevy Trailblazer, you'll need to check one of the following:
* The vehicle's identification plate: This plate, often located on the driver's side doorjamb, may list the transmission type or a code representing it (e.g., 4L60E).
* The vehicle's build sheet (if available): This document, sometimes obtained from GM or a third-party provider if you have the VIN, details all the vehicle's specifications, including the transmission.
* Your vehicle's owner's manual: While it may not explicitly state a code, it might list the transmission type (e.g., "4-speed automatic").
* Your vehicle's service records: Any service documentation may note the transmission type or code.
* A vehicle history report (from Carfax, AutoCheck, etc.): These reports often include detailed vehicle specifications.
In short: The VIN is a starting point for identification, but you need to consult other sources to determine the specific transmission code. The best places to look are the vehicle's identification plate or a comprehensive vehicle history report.