Satellite Antenna Circuit
Table of contents
B125C GMC Possible Causes
- Faulty Radio Antenna Base (Cellular Phone, Navigation and Digital Radio Antenna)
- Radio Antenna Base harness is open or shorted
- Radio Antenna Base circuit poor electrical connection
- Faulty Radio Unit
How do I fix code B125C GMC?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Tech Notes
- B125C 01 Satellite Antenna Circuit Short to Battery
- B125C 02 Satellite Antenna Circuit Short to Ground
- B125C 04 Satellite Antenna Circuit Open
- The digital radio antenna requires a clear line of sight to the sky to operate properly. Reception may be limited, intermittent or unavailable inside structures.
Cost of diagnosing the B125C GMC code
The cost of diagnosing the B125C GMC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B125C GMC Description
The digital radio receiver, located inside the radio, receives digital radio information from the digital radio antenna located on the outside of the vehicle. The digital radio receiver is connected to the digital radio antenna via a shielded coax cable. The digital radio antenna contains an amplifier which is powered by the radio through the coax cable.