Question about 2003 GMC Yukon

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2003 GMC throttle position sensor

Just had a diagnostic done on my truck at autozone, secondary to my engine light coming on and getting a "reduced engine power" display on my dash/electronic odometer area. at first truck would only go 15 mph, now running ok, but engine light still and diagnostic said failed TPS, no search results showed a match for a 2003 gmc yukon 2wd 5.3L gas engine, only matches for denali XL and yukon XL with 6.0L engines, is there a TPS for this model or the the others listed interchangable?

thank you
ryan

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  • carlhumphrey Apr 11, 2009

    I have the same problem and I checked the tps and everything was fine. I need to find out what it is but I am out of Ideas

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I had the same problem with my 2003 denali and came to find out that it was the battery causing the problem. the battery with sufficient power will dictate the tps. if the battery is low or bad, it won't have enough juice to allow the tps to. work. get your battery checked.

Posted on Mar 17, 2009

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There is a TPS for this engine the part number is 543-3 at autozone this engine only came in 20 percent of them made that year...

Posted on Dec 09, 2008

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My reduced engine power light came on it was the throttle control connector there was problems with 2 of the wires.

Posted on Jul 26, 2010

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Put some die electric grease in the connector to the throttle connector and also check the wiring there. the wires there are usually the cause of reduced engine power.

Posted on Apr 19, 2009

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Could be your catalatic convertor or a plugged fuel filter

Posted on Oct 25, 2011

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michigan man
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SOURCE: 2003 GMC throttle position sensor

try www.schramauto.com or call them at 1-800-292-1032

Posted on Mar 21, 2009

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Throttle Actuator Control (TAC)
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?€¢
Acceleration limiting--The control module will continue to use the accelerator pedal for throttle control; however, the vehicle acceleration is limited.


?€¢
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?€¢
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?€¢
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?€¢
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Refer to
?€¢
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The reduced power light is pertaining to the TAC - electronic throttle control . Is the check engine light lit ? If not still may have a DTC -diagnostic trouble code stored . You probably have a bad TPS - throttle position sensor .
Throttle Body Assembly
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?€¢
Acceleration limiting--The control module will continue to use the accelerator pedal for throttle control; however, the vehicle acceleration is limited.


?€¢
Limited throttle mode--The control module will continue to use the accelerator pedal for throttle control; however, the maximum throttle opening is limited.


?€¢
Throttle default mode--The control module will turn off the throttle actuator motor and the throttle will return to the spring loaded default position.


?€¢
Forced idle mode--The control module will perform the following actions:


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?€¢
Engine shutdown mode--The control module will disable fuel and de-energize the throttle actuator.


You need to have it checked for DTC'S - diagnostic trouble codes , probably a accelerator pedal position (APP) sensor or TPS - throttle position sensor !

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Reduced Engine Power Mode When the PCM detects a condition with the TAC system the PCM may enter a reduced engine power mode. Reduced engine power may cause one or more of the following conditions:
?€¢
Acceleration limiting--The control module will continue to use the accelerator pedal for throttle control; however, the vehicle acceleration is limited.

?€¢
Limited throttle mode--The control module will continue to use the accelerator pedal for throttle control; however, the maximum throttle opening is limited.

?€¢
Throttle default mode--The control module will turn off the throttle actuator motor and the throttle will return to the spring loaded default position.

?€¢
Forced idle mode--The control module will perform the following actions:

-
Limit engine speed to idle by positioning throttle position, or by controlling fuel and spark if throttle is turned off.

-
Ignore accelerator pedal input.

?€¢
Engine shutdown mode--The control module will disable fuel and de-energize the throttle actuator.

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