P2808 2016 GMC Sierra Code - Transmission Control Solenoid Valve 7 Stuck Off
Quick Answer
The Transmission Control Module (TCM) uses the vehicle speed signal to determine the actual gear position (1st, 2nd, 3rd, 4th. Common causes include Faulty Transfer Case Shift Control Switch, Transfer Case Shift Control Switch harness is open or shorted, Transfer Case Shift Control Switch 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
- P2808 2016 GMC Sierra indicates Transmission Control Solenoid Valve 7 Stuck Off.
- Common causes
- Common causes include Faulty Transfer Case Shift Control Switch, Transfer Case Shift Control Switch harness is open or shorted, Transfer Case Shift Control Switch 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 P2808 2016 GMC Sierra Description
What are the Possible Causes of the DTC P2808 2016 GMC Sierra?
- Faulty Transfer Case Shift Control Switch
- Transfer Case Shift Control Switch harness is open or shorted
- Transfer Case Shift Control Switch circuit poor electrical connection
How to Fix the DTC P2808 2016 GMC Sierra?
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 P2808 2016 GMC Sierra 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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Frequently Asked Questions about P2808 2016 GMC Sierra Code
1. What does the OBDII code P2808 mean on a 2016 GMC Sierra?
The P2808 code indicates that Transmission Control Solenoid Valve 7 is stuck in the "off" position, impairing the transmission's ability to shift properly.
2. What are the common symptoms of code P2808 on a 2016 GMC Sierra?
Symptoms may include harsh or delayed shifting, transmission slipping, reduced fuel efficiency, or the Check Engine Light being illuminated.
3. What causes the P2808 code to appear on a GMC Sierra?
Common causes include a faulty transmission control solenoid, wiring issues, low or dirty transmission fluid, or a malfunctioning transmission control module (TCM).
4. Can driving with the P2808 code damage my GMC Sierra?
Yes, driving with this code can lead to further transmission damage or unsafe driving conditions if the transmission fails to operate correctly.
5. How is the P2808 code diagnosed?
A mechanic will use an OBDII scanner to confirm the code, inspect the wiring and connectors, check the transmission fluid condition, and test the solenoid's functionality.
6. How do I fix the P2808 code on my 2016 GMC Sierra?
Repairs may involve replacing the faulty solenoid, repairing damaged wiring, cleaning or replacing the transmission fluid, or reprogramming the TCM if necessary.
7. How much does it cost to repair the P2808 code on a GMC Sierra?
The repair cost can range from $150 to $500, depending on whether the solenoid or other components need replacement and the labor involved.
8. Can low transmission fluid cause the P2808 code on a GMC Sierra?
Yes, low or dirty transmission fluid can cause solenoid issues, leading to the P2808 code.
9. Is the P2808 code specific to GMC vehicles?
No, the P2808 code can appear on other vehicles with similar transmission systems, but its diagnosis and repair may vary by make and model.
10. How can I prevent the P2808 code from occurring again?
Regular maintenance, including timely transmission fluid changes and inspections of wiring and connectors, can help prevent this issue.
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