P2135 on Gmc Yukon
Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Gmc Yukon context without treating complaints as confirmed diagnoses.
Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).
- SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for P2135.
- NHTSA recalls, complaints, and manufacturer communications — Used to check public owner complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
What P2135 Means on Your Gmc Yukon
P2135 is a diagnostic trouble code indicating: Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
Real Gmc Yukon Owner Reports
Source: NHTSA Complaints Database
"Codes p1516, p2135, and p0120 have returned for a third time. i was driving and my car went into reduced power mode. luckily, i was just a mile away from home and limped my car home. i've since cleaned the mass air flow sensor and throttle body. i've changed out the tps and acceleration sensor."
"The truck was parked and running. it suddenly began to idle as if someone was pushing down on the gas. i immediately shut the car off. i turned it back on and the engine light was on and it read "reduced engine power". it seemed to drive ok. i called dealership and made apt for tuesday."
All reports filed by vehicle owners directly with the U.S. Department of Transportation.
📊 Complaint Trend by Model Year
Common Causes on Gmc Yukon
Based on NHTSA complaint component analysis for this vehicle.
What To Do Next
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1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
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3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.