P0672 2017 Chevrolet Silverado Code - Cylinder 2 Glow Plug Circuit Fault
Quick Answer
n the diesel engine, air alone is compressed in the cylinder. Common causes include Faulty cylinder #2 glow plug, Cylinder #2 glow plug harness is open or shorted, Cylinder #2 glow plug 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
- P0672 2017 Chevrolet Silverado indicates Cylinder 2 Glow Plug Circuit Fault.
- Common causes
- Common causes include Faulty cylinder #2 glow plug, Cylinder #2 glow plug harness is open or shorted, Cylinder #2 glow plug 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 P0672 2017 Chevrolet Silverado Description
Control of the glow plugs is accomplished by the Glow Plug Control Module. The nominal voltage for the glow plugs is 5.4 volts. When the ignition is turned On, the Glow Plug Control Module applies 7.2 V for 2.2 s, then 5.7 V for 0.8 s, and then 5.4 V until 1200°C (2192°F) is reached. The maximum voltage of the system is 10 V. While the engine is running the voltage will vary between 4.7 - 10 V when in closed loop control to maintain a glow plug temperature that ranges from 1150° - 1180°C (2102° - 2156°F). The temperature and the power consumption are controlled between the Engine Control Module (ECM) and the Glow Plug Control Module within a wide range to suit the engine's pre-heating requirements. Each glow plug is energized individually. This capability yields more optimum heat times for the glow plugs, thus pre - glow times can be kept to a minimum for a short wait to crank times and maximum glow plug durability.
What are the Possible Causes of the DTC P0672 2017 Chevrolet Silverado?
- Faulty cylinder #2 glow plug
- Cylinder #2 glow plug harness is open or shorted
- Cylinder #2 glow plug circuit poor electrical connection
- Faulty Glow Plug Control Module (GPCM)
How to Fix the DTC P0672 2017 Chevrolet Silverado?
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 P0672 2017 Chevrolet Silverado 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.
Need more information about the P0672 2017 Chevrolet Silverado code?
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Frequently Asked Questions about P0672 2017 Chevrolet Silverado Code
1. What does OBDII code P0672 mean on a 2017 Chevrolet Silverado?
P0672 indicates a fault in the glow plug circuit for cylinder 2, meaning the system has detected an issue with the glow plug's performance or electrical circuit.
2. What are the symptoms of code P0672 in a 2017 Chevrolet Silverado?
Common symptoms include difficulty starting in cold weather, rough idling, reduced fuel efficiency, and the check engine light being illuminated.
3. What causes the P0672 code to appear in a 2017 Chevrolet Silverado?
The most common causes are a faulty glow plug in cylinder 2, wiring issues such as damaged or corroded connectors, or a malfunctioning glow plug control module.
4. Can you drive a 2017 Chevrolet Silverado with a P0672 code?
Yes, you can drive the truck, but it may struggle to start in cold weather, and ignoring the issue could lead to further problems with the engine.
5. How do you diagnose the P0672 code on a 2017 Chevrolet Silverado?
Diagnosing this code involves checking the glow plug for cylinder 2, inspecting the wiring and connectors for damage or corrosion, and testing the glow plug control module.
6. How do you fix the P0672 code on a 2017 Chevrolet Silverado?
Repairs may include replacing the faulty glow plug, repairing or replacing damaged wiring or connectors, or replacing the glow plug control module if it's defective.
7. How much does it cost to fix a P0672 code on a 2017 Chevrolet Silverado?
The cost depends on the exact issue, but replacing a glow plug typically costs $100-$200, while more extensive wiring or control module repairs could cost more.
8. What happens if I ignore the P0672 code on my 2017 Chevrolet Silverado?
Ignoring this code can lead to harder cold starts, increased emissions, and potential damage to other components in the glow plug system.
9. Is the P0672 code a common issue for the 2017 Chevrolet Silverado?
Yes, glow plug issues are relatively common in diesel engines like the Duramax found in the Silverado, especially as the vehicle ages.
10. Can a P0672 code cause engine damage in a 2017 Chevrolet Silverado?
While it might not directly cause immediate engine damage, prolonged operation with a faulty glow plug can strain the engine and other components, especially during cold starts.
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