P06CC GMC Code - Cylinder 8 Glow Plug Incorrect
Quick Answer
n the diesel engine, air alone is compressed in the cylinder. Common causes include Faulty cylinder #1 glow plug, Cylinder #1 glow plug harness is open or shorted, Cylinder #1 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
- P06CC GMC indicates Cylinder 8 Glow Plug Incorrect.
- Common causes
- Common causes include Faulty cylinder #1 glow plug, Cylinder #1 glow plug harness is open or shorted, Cylinder #1 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 P06CC GMC 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. A Diagnostic Trouble Code (DTC) will be set if the Glow Plug resistance is not within a calibrated range.
What are the Possible Causes of the DTC P06CC GMC?
- Faulty cylinder #1 glow plug
- Cylinder #1 glow plug harness is open or shorted
- Cylinder #1 glow plug circuit poor electrical connection
- Faulty Glow Plug Control Module
How to Fix the DTC P06CC 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 P06CC 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.
Need more information about the P06CC GMC code?
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Information for Specific GMC Models
- P06CC 2014 GMC Sierra — Cylinder 8 Glow Plug Incorrect
- P06CC 2015 GMC Sierra — Cylinder 8 Glow Plug Incorrect
- P06CC 2016 GMC Sierra — Cylinder 8 Glow Plug Incorrect
- P06CC 2017 GMC Sierra — Cylinder 8 Glow Plug Incorrect
- P06CC 2018 GMC Sierra — Cylinder 8 Glow Plug Incorrect
Frequently Asked Questions about P06CC GMC Code
1. What does the OBDII code P06CC mean for a GMC vehicle?
The code P06CC indicates "Cylinder 8 Glow Plug Incorrect," meaning there is an issue with the glow plug circuit or operation for cylinder 8.
2. What are the common symptoms of code P06CC on a GMC?
Symptoms can include difficulty starting the engine, poor cold weather performance, reduced fuel efficiency, and the illumination of the check engine light.
3. What causes the P06CC code to appear?
Common causes include a faulty glow plug, damaged glow plug wiring, a malfunctioning glow plug control module, or corrosion in the electrical connections.
4. Can driving with code P06CC damage my GMC engine?
While it might not cause immediate damage, prolonged driving with a faulty glow plug can lead to reduced engine efficiency and difficulty starting in cold weather.
5. How do I diagnose the P06CC code on my GMC?
Use an OBDII scanner to confirm the code, inspect the glow plug and wiring for cylinder 8, check for corrosion or loose connections, and test the glow plug control module.
6. How can I fix the P06CC code on a GMC?
Common fixes include replacing the faulty glow plug, repairing damaged wiring, cleaning corroded connectors, or replacing the glow plug control module if necessary.
7. How much does it cost to repair a P06CC code on a GMC?
The cost varies, but replacing a glow plug typically costs $50-$150 for parts and labor, while more extensive repairs like replacing the control module may cost more.
8. Can I reset the P06CC code without repairing it?
You can clear the code with an OBDII scanner, but if the underlying issue isn’t resolved, the code will likely reappear.
9. Is the P06CC code specific to GMC diesel engines?
Yes, this code is typically associated with GMC diesel engines that rely on glow plugs for cold starts.
10. How do glow plugs affect engine performance for a GMC?
Glow plugs assist in warming the air-fuel mixture in diesel engines for efficient combustion, particularly during cold starts. A faulty glow plug can lead to hard starts and poor engine performance.
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