P1811 GMC Code - Maximum Adaptive & Long Term Shift
Quick Answer
With the engine running and an adaptable shift has occurred, the Powertrain Control Module (PCM) detects during the following conditions occurred twice per trip: Condition 1: 1-2 Shift over 0.65 seconds and 1 -2 Shift adaptive reached its limit. Common causes include Faulty Pressure Control Solenoid, Pressure Control Solenoid harness is open or shorted, Pressure Control Solenoid 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
- P1811 GMC indicates Maximum Adaptive & Long Term Shift.
- Common causes
- Common causes include Faulty Pressure Control Solenoid, Pressure Control Solenoid harness is open or shorted, Pressure Control Solenoid 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 P1811 GMC Description
What are the Possible Causes of the DTC P1811 GMC?
- Faulty Pressure Control Solenoid
- Pressure Control Solenoid harness is open or shorted
- Pressure Control Solenoid circuit poor electrical connection
How to Fix the DTC P1811 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 P1811 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.
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Frequently Asked Questions about P1811 GMC Code
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