P1520 GMC Code - Transmission Range Switch Circuit
Quick Answer
The P1520 GMC diagnostic trouble code relates to the Transmission Range Switch Circuit. Common causes include Faulty transmission range switch, Damaged wiring or connectors in the circuit, Corrosion or debris affecting the circuit. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1520 GMC indicates Transmission Range Switch Circuit.
- Common causes
- Common causes include Faulty transmission range switch, Damaged wiring or connectors in the circuit, Corrosion or debris affecting the circuit.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P1520 GMC Description
The P1520 GMC diagnostic trouble code relates to the Transmission Range Switch Circuit. This code indicates that there is a malfunction in the circuit responsible for communicating the transmission gear position to the vehicle's computer system. The transmission range switch, also known as the neutral safety switch, is crucial for ensuring that the vehicle starts only in Park or Neutral and shifts into the correct gear based on the driver's input.
Common Causes of P1520 GMC
- Faulty transmission range switch
- Damaged wiring or connectors in the circuit
- Corrosion or debris affecting the circuit
- Faulty transmission control module
- Electrical issues in the vehicle's system
Symptoms of P1520 GMC
- Erratic shifting of the transmission
- Difficulty getting the vehicle into gear
- Stalling or poor acceleration
- Vehicle not starting
- Check Engine Light illuminated on the dashboard
How to Fix P1520 GMC
- Diagnose the issue by using a scan tool to retrieve the trouble code and inspecting the transmission range switch circuit for any visible damage.
- Test the transmission range switch using a multimeter to determine if it is functioning properly.
- Replace the transmission range switch if it is found to be faulty.
- Inspect and repair any damaged wiring or connectors in the circuit.
- Clear the trouble code from the vehicle's computer system and test drive the vehicle to ensure the issue is resolved.
Cost to Fix P1520 GMC
The typical repair costs for addressing a P1520 GMC code can range from $150 to $500, depending on the specific cause of the issue and the labor rates at the auto repair shop. It is important to note that the cost of parts and labor can vary based on factors such as location, vehicle make and model, and the extent of the repairs needed. It is recommended to consult with a qualified mechanic for a more accurate estimate based on the specific circumstances of the vehicle.
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