No Global Positioning System (GPS) Reception. Cadillac CTS 2005

For 1990-2009 cars only

Makes 🢒 Cadillac 🢒 2005 🢒 CTS 🢒 Vehicle Control Systems 🢒 Vehicle DTC Information 🢒 No Global Positioning System (GPS) Reception

Step	Action	Yes	No
Schematic Reference: Navigation System Schematics Connector End View Reference: Entertainment Connector End Views DEFINITION: When using the navigation system, the GPS icon does not appear on the navigation radio.
1	Did you perform the Diagnostic System Check - Vehicle?	Go to Step 2	Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2	Move the vehicle to an open area outside of the building. Turn ON the ignition with the engine OFF. The Cadillac emblem screen appears on the navigation radio. Press the NAV button on the radio. When the navigation disclaimer screen appears, press the I AGREE button on the display. The display should show the current position of the vehicle. Does the system operate normally?	Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems	Go to Step 3
3	From the Navigation Menu screen, select GPS INFO. Does the system have global positioning system (GPS) reception with four or more satellites?	Go to Step 9	Go to Step 4
4	Leave the vehicle outside with the ignition ON or set to ACC for 30 minutes. Does the system have GPS reception with four or more satellites?	Go to Step 9	Go to Step 5
5	Remove the GPS antenna from its location. Place the GPS antenna outside of the vehicle, connected to the navigation radio, and positioned horizontally. Turn ON the ignition and turn ON the navigation system. Does the system have GPS reception with four or more satellites?	Go to Step 6	Go to Step 7
6	Inspect the front window glass for tinting, alterations, or obstructions. Remove any tinting, alterations, or obstructions found. Did you find and correct the condition?	Go to Step 9	Go to Step 7
7	Replace the GPS antenna. Refer to Global Positioning System (GPS) Antenna Replacement . Did you complete the replacement?	Go to Step 9	Go to Step 8
8	Replace the navigation radio. Refer to Control Module References in Computer/Integrating Systems. Did you complete the replacement?	Go to Step 9	--
9	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 3