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P2135 GMC

P2135 GMC - Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation

P2135 GMC Comments |  Add Comment
Possible causes
- Faulty electric throttle control actuator (TP sensor 1 and 2)
- Throttle Position Sensor harness is open or shorted
- Throttle Position Sensor circuit poor connection
- Faulty accelerator pedal position sensor
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Tech notes
There is service bulletin from GM for
2008-2009 GMC Envoy
2008-2011 GMC Canyon, Savana, Sierra, Sierra Denali, Yukon, Yukon Denali, Yukon
XL, Yukon XL Denali
2008-2011 GMC Yukon Two-Mode Hybrid
2009-2011 GMC Sierra Two-Mode Hybrid
Factory Service bulletin P2135
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Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P2135 GMC Description

The throttle Position (TP) sensors 1 and 2 are potentiometer type sensors each with 3 circuits.

- A 5 - volt reference circuit.

- A low reference circuit.

- A signal circuit

The TP sensor are used to determine the throttle plate angle for various engine management systems. The control module provides each TP sensor a 5-volt reference circuit and a low reference circuit. The TP sensors then provide the control module whit signal voltage proportional to the throttle plate movement. Both TP sensor signal voltage are low at close throttle and increase as the throttle opens. When the control module detects that the TP sensor 1 signal and TP sensor 2 signals disagree or the signal voltages are outside the predetermined range, the P2135 code is set.

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GMC Technical Service Bulletins for P2135 code
2008 GMC CANYON 061000 Engine And Engine Cooling:engine Details
2009 GMC CANYON 061000 Engine And Engine Cooling:engine Details
2010 GMC CANYON 061000 Engine And Engine Cooling:engine Details
2011 GMC CANYON 061000 Engine And Engine Cooling:engine Details
2008 GMC ENVOY 061000 Engine And Engine Cooling:engine Details
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