2003 Z71 Suburban Temp Gauge

Discussion in 'GM Electrical Tech' started by gaborn73, Dec 28, 2009.

  1. gaborn73

    gaborn73 New Member

    My 03 suburban (5.3L Z71) has 80k miles and the temp gauge
    started acting up. 24 hours without driving on a 25deg F night and it read 220F upon startup then
    proceeded to climb past 260. Fluids are good. No holes, no smells, suspecting sending unit or gauge itself.
    Anyone have the diagram for a '03 5.3L with wiring?I used the site search but after no dice on a fix after 24 articles.
  2. gaborn73

    gaborn73 New Member

    Moderators you can delete this thread.

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