P2808 2017 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 2017 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 2017 GMC Sierra Description
What are the Possible Causes of the DTC P2808 2017 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 2017 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 2017 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 2017 GMC Sierra Code
1. What does the OBDII code P2808 mean on a 2017 GMC Sierra?
P2808 indicates that the Transmission Control Solenoid Valve 7 is stuck in the "off" position, which can affect gear shifting and overall transmission performance.
2. What are the common symptoms of the P2808 code on a 2017 GMC Sierra?
Symptoms may include difficulty shifting gears, slipping gears, harsh shifting, transmission overheating, or the Check Engine Light being illuminated.
3. What causes the P2808 code to appear on a 2017 GMC Sierra?
Common causes include a faulty transmission solenoid valve, clogged hydraulic passages, low transmission fluid, or electrical issues like damaged wiring or connectors.
4. Can low transmission fluid cause the P2808 code?
Yes, low or contaminated transmission fluid can lead to improper solenoid function and trigger the P2808 code.
5. Is it safe to drive a 2017 GMC Sierra with the P2808 code?
Driving with this code is not recommended, as it can cause further transmission damage or lead to unsafe driving conditions due to gear shifting issues.
6. How is the P2808 code diagnosed?
A mechanic will use a scan tool to confirm the code, inspect the transmission fluid condition, check the solenoid valve for proper operation, and test related wiring and connectors.
7. How do you fix the P2808 code on a 2017 GMC Sierra?
Repairs may include replacing the faulty solenoid valve, cleaning or flushing the transmission, repairing damaged wiring, or refilling/servicing the transmission fluid.
8. How much does it cost to repair the P2808 code on a GMC Sierra?
Repair costs vary but typically range from $200 to $400 for solenoid replacement. Additional costs may apply for fluid changes or electrical repairs.
9. Can a P2808 code be caused by an electrical issue?
Yes, damaged wiring, corroded connectors, or poor connections in the solenoid circuit can trigger the P2808 code.
10. Will resetting the Check Engine Light fix the P2808 code?
No, resetting the light will not fix the underlying issue. The cause of the P2808 code must be identified and repaired to prevent it from returning.
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