Data Link Connector (DLC) Schematics

WARNING: This page is about a different car, the 2004 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Power, Ground, DLC & SP205

Courtesy of GENERAL MOTORS CORP.

Fig 2: Splice Packs SP206, SP207 & Dedicated TAC Serial Data Circuits

Courtesy of GENERAL MOTORS CORP.