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Home >> Cadillac >> 2008 >> Escalade EXT >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Cellular System, Entertainment System, And Navigation System >> Diagnostic Information and Procedures >> OnStar Global Positioning System (GPS) Data Not Current or Inaccurate >> Circuit/System Description
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Circuit/System Description

The navigation antenna is connected to the communication interface module (CIM) with a RG-174 coax cable. The CIM polls the data from the navigation antenna once every second.

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