What does p0121 GMC mean on a car?

P0121 GMC Meaning The throttle position sensor (TPS) responds to the accelerator pedal movement. This sensor is a kind of potentiometer which transforms the throttle position into output voltage, and emits the voltage signal to the Engine Control Module (ECM).

What does trouble code p2128 mean on a GMC Sierra?

The P2128 trouble code refers to Accelerator Pedal Position (APP) Sensor 1-2 Correlation. Do NOT assume you have a bad accelerator pedal sensor. GM says the condition is caused by water leaking into the body harness connector that carries the APP signal to the PCM. The water changes the voltage readings from the APP.

What is the p2138 code on GM vehicles?

GM has issued a technical service bulletin # 07-06-04-019D to address a P2138 Reduced Power issue. The P2138 trouble code may be stored in the computer along with a check engine light. The P2138 Reduced Power bulletin applies to the following vehicles:

What causes a throttle position sensor to malfunction?

Malfunction is detected when an excessively low or high voltage from the sensor is sent to ECM. The throttle position sensor ( TPS) responds to the accelerator pedal movement. This sensor is a kind of potentiometer which transforms the throttle position into output voltage, and emits the voltage signal to the Engine Control Module ( ECM ).

What does the p2135 GMC throttle position sensor mean?

P2135 GMC Meaning 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 sensors are used to determine the throttle plate angle for various engine management systems.

What does the p2135 code mean on a Chevy?

Both TP sensors signal voltage are low at the 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.

What kind of mpg does GMC Yukon Denali get?

Even with an increase of 45 horsepower and 40 pound-feet over the previous Denali, the 2007 model manages the same 13-mpg city rating and betters the highway number by 2 mpg to 19. We were surprised to attain 20 mpg on highway stretches, even at near-80-mph speeds.

When did the GMC Yukon Denali come out?

It was the Denali that GM favored by introducing it first, back in 1998. But it has always stood in the Escalade’s shadow —a few thousand dollars cheaper, with 10 to 20 fewer horses and none of the Cadillac truck’s notoriety—even though mostly superficial differences separate them.

What kind of engine does a Denali have?

For 2007 comes an even more Escalade-like Denali, with a shared 6.2-liter V-8 and six-speed, that should nonetheless continue to take a corporate-designated second place. This new powertrain is, for now, exclusive to Denali and Escalade models, but we expect the six-speed will eventually make its way down-market.

What does trouble code p0175 on GMC Sierra mean?

A common trouble code with the GMC Sierra is P0175. This code number references a number that is given to you when you plug a vehicle into an OBDII scanner. It’s not the most complicated OBDII trouble code to diagnose. It is also one of the most common. It means that the motor is running with a rich condition.

What does p0121 mean on a Vortec 5300?

: Vortec 5300 5.3L V8 P0121??? P0121??? Hey guys my check engine light went on last night and when i put the scanner on it this am it gave me P0121 meaning ( Throttle position sensor) i have read on the net/forums that the whole throttle body needs to be replaced however, i have also heard to clean it and it works some times!

What is the trouble code on a GMC Sierra?

What does the code p0121 mean on a Chevy Silverado?

P0121 is a somewhat common trouble code with the Chevy Silverado. It’s an OBDII code and has to do with the Throttle Pedal Position Sensor. It is relatively serious problem since it leaves your vehicle in failsafe mode. P0121: Throttle Pedal Position Sensor → Switch (TPS) A Circuit Range → Performance Problem

What does p0306 stand for on a GMC Sierra?

P0306 is a fairly common trouble code with the GMC Sierra. It’s and OBD2 code and stands for: P0306 is certainly a cause for concern, and should be considered a threat to the drivability your Sierra.

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