Conditions for Clearing the DTC

WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

The VCIM detects the presence of a navigation antenna.
A history DTC clears after 50 malfunction free ignition cycles.
The VCIM receives the clear DTC command from the scan tool.

DTC B2483 or B2484

Step	Action	Values	Yes	No
Schematic Reference: OnStar Schematics Connector End View Reference: Cellular Communication Connector End Views
1	Did you perform the Diagnostic System Check - Vehicle?	-	Go to Step 2	Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2	NOTE: Using a DMM to measure the resistance of the navigation antenna coax from the center conductor to the outer shield while the antenna is still connected will damage the navigation antenna. IMPORTANT: Vehicle may be equipped with sectioned coax. Test each section and replace only the faulty section, not the entire length of coax. Disconnect the navigation antenna coax connector from the navigation antenna. Disconnect the navigation antenna from the vehicle communication interface module (VCIM). Measure the resistance from the center conductor of the coax to the metal outer shield. Does the meter read out of limits?	-	Go to Step 3	Go to Step 4
3	Measure the resistance of the navigation antenna coax center conductor from end to end. Does the resistance measure greater than the specified value?	1 Ω	Go to Step 4	Go to Step 5
4	Replace the navigation antenna coax. Did you complete the replacement?	-	Go to Step 7	-
5	Inspect for poor connections at the navigation antenna and the harness connector of the VCIM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	-	Go to Step 7	Go to Step 6
6	Replace the navigation antenna. Refer to Navigation Antenna Replacement . Is the repair complete?	-	Go to Step 7	-
7	Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Does the DTC reset?	-	Go to Step 8	System OK
8	Replace the VCIM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement?	-	Go to Step 9	-
9	Use the scan tool in order to clear the DTCs. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Does the DTC reset?	-	Go to Step 2	-