B1445 GMC Code - Control Module Voltage Output Circuit
Quick Answer
The Body Control Module (BCM) controls the Retained Accessory Power Relay 1 and Retained Accessory Power Relay 2 through their control circuits by applying a voltage to the Retained Accessory Power Relay coil control circuit. Common causes include Faulty Retained Accessory Power Relay 1 or Retained Accessory Power Relay 2, Retained Accessory Power Relay harness is open or shorted, Retained Accessory Power Relay circuit poor electrical connection. 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
- B1445 GMC indicates Control Module Voltage Output Circuit.
- Common causes
- Common causes include Faulty Retained Accessory Power Relay 1 or Retained Accessory Power Relay 2, Retained Accessory Power Relay harness is open or shorted, Retained Accessory Power Relay circuit poor electrical connection.
- 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.
Code B1445 GMC Description
What are the Possible Causes of the DTC B1445 GMC?
- Faulty Retained Accessory Power Relay 1 or Retained Accessory Power Relay 2
- Retained Accessory Power Relay harness is open or shorted
- Retained Accessory Power Relay circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B1445 GMC?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1445 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific GMC Models
- B1445 2014 GMC Sierra — Control Module Voltage Output Circuit
- B1445 2015 GMC Sierra — Control Module Voltage Output Circuit
- B1445 2016 GMC Sierra — Control Module Voltage Output Circuit
- B1445 2017 GMC Sierra — Control Module Voltage Output Circuit
- B1445 2018 GMC Sierra — Control Module Voltage Output Circuit
Frequently Asked Questions about B1445 GMC Code
1. What does the OBDII code B1445 mean for GMC vehicles?
B1445 indicates an issue with the Control Module Voltage Output Circuit, typically related to improper voltage levels being detected by the control module.
2. What are common symptoms of the B1445 code on a GMC?
Symptoms may include malfunctioning electrical components, warning lights on the dashboard, or intermittent power issues in specific circuits.
3. What causes the B1445 code to appear on a GMC vehicle?
Common causes include damaged wiring, loose or corroded electrical connections, a faulty control module, or a short in the voltage output circuit.
4. How can I diagnose the B1445 code on my GMC?
Use an OBDII scanner to confirm the code, then inspect the wiring, connectors, and voltage output circuit for signs of damage or corrosion.
5. Is the B1445 code serious?
While it may not immediately affect drivability, it can cause electrical malfunctions that may lead to more significant issues if left unresolved.
6. Can I clear the B1445 code without fixing the problem?
Clearing the code without addressing the underlying issue may temporarily remove the warning but will likely cause the code to return.
7. How do I fix the B1445 code on a GMC vehicle?
Repairs typically involve replacing damaged wiring, cleaning corroded connectors, or replacing a faulty control module if necessary.
8. Can a weak battery cause the B1445 code in GMC vehicles?
Yes, a weak or failing battery can lead to voltage irregularities that may trigger the B1445 code.
9. How much does it cost to repair the B1445 code on a GMC?
Repair costs vary depending on the root cause, but fixing wiring or connectors is usually less expensive than replacing the control module.
10. Can I drive my GMC with the B1445 code active?
You may be able to drive temporarily, but it’s recommended to address the issue promptly to avoid potential electrical failures.
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