P2135 on GMC YUKON — Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation

Q: "What does P2135 mean on a GMC YUKON?"

"P2135 indicates: Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation. This is a powertrain code. 2 GMC YUKON owners have reported this to NHTSA."

Q: "What are the most common causes of P2135 on GMC YUKON?"

"Based on 2 NHTSA reports, the most commonly cited components are: Electronic Stability Control (Esc), Vehicle Speed Control. These percentages are based on the component field in owner complaints."

Q: "Is P2135 serious on my GMC YUKON?"

"Of 2 NHTSA reports for this code on GMC YUKON, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my GMC YUKON shows P2135?"

"1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare."

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.

2 GMC YUKON owners have reported this issue to NHTSA across model years 2006-2011. Most reports come from the 2006, 2011 model years. The most commonly reported component is Electronic Stability Control (Esc) (50.0% of reports).

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."

— 2006 GMC YUKON owner · ELECTRONIC STABILITY CONTROL (ESC) · Filed 06/10/2020

"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."

— 2011 GMC YUKON owner · VEHICLE SPEED CONTROL · Filed 01/03/2013

All reports filed by vehicle owners directly with the U.S. Department of Transportation.

📊 Complaint Trend by Model Year

1

'06

1

'11

Common Causes on GMC YUKON

Based on NHTSA complaint component analysis for this vehicle.

ELECTRONIC STABILITY CONTROL (ESC) 50%

VEHICLE SPEED CONTROL 50%

What To Do Next

1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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.
3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.

Frequently Asked Questions

What does P2135 mean on a GMC YUKON? ▾

P2135 indicates: Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation. This is a powertrain code. 2 GMC YUKON owners have reported this to NHTSA.

What are the most common causes of P2135 on GMC YUKON? ▾

Based on 2 NHTSA reports, the most commonly cited components are: Electronic Stability Control (Esc), Vehicle Speed Control. These percentages are based on the component field in owner complaints.

Is P2135 serious on my GMC YUKON? ▾

Of 2 NHTSA reports for this code on GMC YUKON, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my GMC YUKON shows P2135? ▾

1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare.