P2537 2016 GMC Sierra Code - Ignition Accessory Switch Circuit Low Voltage
Quick Answer
The diagnostic trouble code P2537 in a 2016 GMC Sierra indicates a problem with the ignition accessory switch circuit having low voltage. Common causes include Faulty ignition accessory switch, Damaged wiring or connectors in the circuit, Weak battery. 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
- P2537 2016 GMC Sierra indicates Ignition Accessory Switch Circuit Low Voltage.
- Common causes
- Common causes include Faulty ignition accessory switch, Damaged wiring or connectors in the circuit, Weak battery.
- 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 P2537 2016 GMC Sierra Description
The diagnostic trouble code P2537 in a 2016 GMC Sierra indicates a problem with the ignition accessory switch circuit having low voltage. The ignition accessory switch is responsible for controlling power to various electrical components in the vehicle when the key is turned to the accessory position. When the voltage in this circuit is lower than expected, it can lead to issues with starting the vehicle, powering accessories, and overall electrical system performance.
Common Causes of P2537 2016 GMC Sierra
- Faulty ignition accessory switch
- Damaged wiring or connectors in the circuit
- Weak battery
- Malfunctioning ignition switch
- Corrosion in the electrical connections
Symptoms of P2537 2016 GMC Sierra
- Intermittent starting issues
- Failure of electrical accessories to power on
- Stalling while driving
- Illumination of the check engine light
- Loss of power to the radio or other accessories
How to Fix P2537 2016 GMC Sierra
- Begin by checking the battery voltage to ensure it is within the manufacturer's specifications.
- Inspect the wiring and connectors in the ignition accessory switch circuit for any damage or corrosion.
- Test the ignition accessory switch for proper operation and replace if necessary.
- Clear the diagnostic trouble codes from the vehicle's computer and test to ensure the issue has been resolved.
- If the problem persists, consult a professional mechanic for further diagnosis and repair.
Cost to Fix P2537 2016 GMC Sierra
The typical repair costs for addressing the P2537 code in a 2016 GMC Sierra can range from $100 to $300, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. Additionally, rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive pricing.
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Frequently Asked Questions about P2537 2016 GMC Sierra Code
1. What does the OBDII code P2537 mean on a 2016 GMC Sierra?
P2537 indicates that the Powertrain Control Module (PCM) has detected low voltage in the ignition accessory switch circuit.
2. What are the common symptoms of code P2537 in a 2016 GMC Sierra?
Common symptoms include difficulty starting the vehicle, intermittent accessory power loss, dim or unresponsive interior electronics, and the illumination of the check engine light.
3. What causes the P2537 code to appear on a 2016 GMC Sierra?
Possible causes include a faulty ignition switch, damaged or corroded wiring, a weak battery, or a malfunctioning PCM.
4. Can a weak battery trigger the P2537 code?
Yes, a weak or failing battery can cause low voltage in the ignition accessory switch circuit, which may trigger the P2537 code.
5. How do I diagnose the P2537 code on my 2016 GMC Sierra?
Start by checking the battery voltage, inspecting the ignition switch for damage, examining the wiring and connectors for corrosion or wear, and testing the PCM for proper operation.
6. Can I drive my 2016 GMC Sierra with the P2537 code active?
While the vehicle may still be drivable, it is not recommended to ignore the code as it may lead to further electrical issues or affect starting and accessory functions.
7. How do I fix the P2537 code on a 2016 GMC Sierra?
Repairs may include replacing the ignition switch, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming or replacing the PCM if necessary.
8. How much does it cost to fix the P2537 code on a 2016 GMC Sierra?
Repair costs can vary widely depending on the root cause, but replacing an ignition switch typically costs between $150 and $300, while wiring repairs or PCM replacement could increase the cost.
9. Can a blown fuse cause the P2537 code?
Yes, a blown fuse in the ignition circuit can disrupt voltage flow and trigger the P2537 code.
10. Will clearing the P2537 code solve the problem?
Clearing the code may turn off the check engine light temporarily, but the underlying issue must be addressed to prevent the code from returning.
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