Conditions for Clearing the DTC
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- The VCIM detects the presence of the cellular and 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 Cellular Communication Diagnostic System Check? | - | Go to Step 2 | Go to Diagnostic System Check - Cellular Communication |
| 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.
|
- | 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? |
1.0 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 cellular and 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 cellular and navigation antenna. Refer to Antenna Assembly Replacement - Cellular and Navigation . Is the repair complete? |
- | Go to Step 7 | - |
| 7 |
|
- | Go to Step 8 | System OK |
| 8 |
IMPORTANT:
Perform the OnStar® setup procedure. Replace the VCIM. Refer to Communication Interface Module Replacement .
|
- | Go to Step 2 | - |