P279A 2016 Chevrolet Silverado Code - Four Wheel Drive High Range Performance
Quick Answer
The P279A diagnostic trouble code (DTC) for the 2016 Chevrolet Silverado refers to "Four Wheel Drive High Range Performance." This code is triggered when the powertrain control module (PCM) detects a discrepancy in the performance of the four-wheel drive high range system. Common causes include Faulty four-wheel drive switch or control module, Defective transfer case motor or actuator, Wiring issues or loose connections in the four-wheel drive system. 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
- P279A 2016 Chevrolet Silverado indicates Four Wheel Drive High Range Performance.
- Common causes
- Common causes include Faulty four-wheel drive switch or control module, Defective transfer case motor or actuator, Wiring issues or loose connections in the four-wheel drive system.
- 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 P279A 2016 Chevrolet Silverado Description
The P279A diagnostic trouble code (DTC) for the 2016 Chevrolet Silverado refers to "Four Wheel Drive High Range Performance." This code is triggered when the powertrain control module (PCM) detects a discrepancy in the performance of the four-wheel drive high range system. In simpler terms, it means that there is an issue with engaging or disengaging the four-wheel drive high range on the vehicle.
Common Causes of P279A 2016 Chevrolet Silverado
- Faulty four-wheel drive switch or control module.
- Defective transfer case motor or actuator.
- Wiring issues or loose connections in the four-wheel drive system.
- Malfunctioning sensors related to the four-wheel drive high range system.
- PCM software or hardware issues affecting four-wheel drive operation.
Symptoms of P279A 2016 Chevrolet Silverado
- Difficulty engaging or disengaging four-wheel drive high range.
- Illumination of the four-wheel drive warning light on the dashboard.
- Grinding or clunking noises when switching to four-wheel drive high range.
- Reduced traction or stability in slippery or off-road conditions.
- Abnormal shifting behavior during four-wheel drive operation.
How to Fix P279A 2016 Chevrolet Silverado
- Begin by conducting a thorough diagnostic scan to retrieve the specific trouble codes and pinpoint the underlying cause of the issue.
- Inspect the four-wheel drive switch, control module, and wiring for any visible damage or loose connections. Replace or repair as necessary.
- Test the transfer case motor or actuator functionality to ensure proper engagement and disengagement of the four-wheel drive high range.
- Check and calibrate the sensors related to the four-wheel drive system to ensure accurate data transmission to the PCM.
- Clear the DTCs from the PCM memory and perform a road test to confirm that the issue has been successfully resolved.
Cost to Fix P279A 2016 Chevrolet Silverado
The typical repair costs for addressing a P279A code on a 2016 Chevrolet Silverado can range from $200 to $800, depending on the specific cause of the issue and the required parts and labor. It's important to note that the diagnosis time and labor rates at auto repair shops can vary significantly, with rates typically ranging between $80 and $150 per hour. Factors such as location, vehicle make and model, and engine type can also impact the final repair costs. It's recommended to obtain quotes from multiple reputable auto repair shops to get a more accurate estimate for the repair.
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Frequently Asked Questions about P279A 2016 Chevrolet Silverado Code
What does the OBDII code P279A mean on a 2016 Chevrolet Silverado?
The P279A code indicates a "Four-Wheel Drive High Range Performance" issue, meaning the vehicle's powertrain control module (PCM) has detected a problem with the four-wheel drive high-range system performance.
What are the common symptoms of the P279A code on a 2016 Silverado?
Symptoms may include the four-wheel drive not engaging properly, reduced vehicle performance, warning lights on the dashboard, and potential drivability issues.
What causes the P279A code to appear on a 2016 Chevrolet Silverado?
Common causes include a faulty transfer case motor, damaged wiring or connectors in the four-wheel drive system, a malfunctioning transfer case control module, or mechanical issues in the transfer case.
Can I still drive my 2016 Silverado with the P279A code active?
While the truck may still be drivable, it could experience reduced performance or fail to engage four-wheel drive. Prolonged driving without addressing the issue can lead to further damage.
How do I diagnose the P279A code on my 2016 Chevrolet Silverado?
Start by scanning the vehicle with an OBDII scanner, inspecting the transfer case motor and related wiring, and checking for mechanical issues in the transfer case. A professional technician may be needed for deeper diagnostics.
What is the most common fix for the P279A code on a 2016 Silverado?
The most common fix is repairing or replacing the transfer case motor, but repairs can also involve fixing damaged wiring or replacing the transfer case control module if necessary.
How much does it cost to fix the P279A code on a 2016 Chevrolet Silverado?
The cost depends on the root cause. Replacing a transfer case motor typically costs $500-$1,000, while wiring repairs or module replacements may vary.
Can a software update fix the P279A code on a 2016 Silverado?
In some cases, a software update to the transfer case control module may resolve the issue, but this depends on the specific circumstances and should be determined by a technician.
What tools are needed to diagnose the P279A code on a 2016 Silverado?
You'll need an OBDII scanner to read and clear codes, a multimeter to check electrical components, and potentially specialty tools for inspecting the transfer case system.
Is the P279A code specific to four-wheel drive vehicles?
Yes, this code is specific to vehicles equipped with a four-wheel drive system and typically relates to the high-range functionality of the transfer case.
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