Question about 2003 Chevrolet Silverado 1500

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Ive got a 2003 chevy 1500 4 wheel drive it keeps going into reduced engine power it has electrion throttle ive replace throttle body,gas pedal,throttle actuator control,and the wireing pigtail to the throttle body and still has he same problem

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Try a stall test... engine running hold brake pedal and raise fuel pedal are you still in reduced engine power
another thing is there is misfire and warning of pcm is reduced power

Posted on Oct 18, 2013

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Cam or crank sensor failing

Posted on Oct 17, 2013

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06 chevy silverado 1500 LTZ 5.3lt code U0107 Dashboard show "engine power reduced " scan recommend replace Electronic Throttle Body Module. mechanic told me throttle body. This is completely different


I have worked on these and have found that there are issues with the throttle "body". You should be able to get one on ebay for around $80. They have wiring issues inside and get poor connections after warming up and cooling down repeatedly. Hope this helps.

Mar 19, 2017 | 2006 Chevrolet Silverado 1500 2WD

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I have a 2004 gmc envoy. I have replaced the throttle body and all sparks plug or core packs . Now I have a reduce power engine Light that comes on when it wants to when it comes on you have no power


Do you know what drive by wire is ? electronic throttle control ? Reduced power light on , DTC'S - diagnostic trouble codes stored in the PCM Chevy GMC Code P2135 TPS Problems Watch a few videos on these systems , the gas pedal has sensors , the throttle body does as well , have seen broken wires at connectors . Drive by Wire Function and diagnostics by Wells

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Reduce power light on has no throttle and keeps giving throttle accuator cdes


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Dec 10, 2012 - Tech Tip: Reduced Engine Power Message Displayed on GM Vehicles ... Model year 2008-'10 vehicles must have the engine control module (ECM) reprogrammed ... Do not drop the electronic throttle control components.

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I push the gas pedal on my 2004 CTS and it does not go what is the problem


Your caddy has Electronic throttle control ,drive by wire ! Do you know what this is ? You gas pedal ,if you look at it has wires connected to it .These wires hook up to the engine computer ,the engine computer has more wires that hook up to a dc electric motor under the hood on the throttle body which open an close the throttle plate ,which makes the vehicle go faster or slow down !

Are there any messages on your dash REDUCED POWER ? Check engine light lit ?

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Aug 24, 2015 | Cars & Trucks

1 Answer

2003 Chevy Trailblazer engine power lose light come on


Hi Steve , your vehicle has electronic throttle control . I don't know if you are aware of this. The gas pedal have position sensors an a wiring connector with 4-6 wires .these wires are connected to the engine computer . an there is a electric motor on the throttle body assembly , the computer opens an closes the throttle . You probably have codes stored in the engine computer .
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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May 04, 2015 | 2003 Chevrolet Chevrolet TrailBlazer

1 Answer

I have a code PO1125 on my obd11 I have a 2003 chevy suburban 1500 LT what does that mean


Drive by wire throttle correlation ... There are problems with a small yellow wire that breaks going into the harness plug at the throttle body. keep me posted but check that first.
Ron

Aug 03, 2010 | 2003 Chevrolet Suburban 1500

2 Answers

The engine light comes on and the reduced power is activated ,there sensors were tripped all to do with the throttle . the auto shop ended up replacing the throttle body and the problem just happend again...


I'd bring it back to the shop that put in the throttle body and have them check to see if the replacement was defective or failed. If not, you may have a bad throttle position sensor [part of the gas pedal] I'm assuming it worked fine for a while after the repairs with no problems then suddenly started acting up again. I've replaced a bunch of throttle bodies but only one position sensor so far. There's always the chance that there's a bad wire somplace or some other more exotic problem but I'll bet you'll find it at either the sensor or throttle body. Good luck, hope this helps!

Aug 01, 2010 | 2003 Chevrolet Avalanche

1 Answer

My 2005 chevy z71 will go to reduced engine power when pushing on the gas i believe it is the throttle position sensor where is an affordable place to get one?


it sounds me like the app sensor is bad, i dont think tps will cause reduced engine pewer, but app sensor will . u have to replace the trottle body to fix the app sensors uder the hood.
replace the accelleator pedal to fix the app sensors n the cab.
there is a ground wire in the big wire loom behind the intake if u loose ground ull get that reduced power issue i replaced throttle body and accellerator pedle n had the same reduced power few minutes after test drive came back cleared the codes then found a hit on idenafix for ground in the big wire loom ground went to fire wall and was bearly hanging on broke when i touched it fixed it witha crimp on fitting, havent had the code set since

Mar 25, 2010 | 2005 Chevrolet Silverado

1 Answer

When driveing truck in cold weather you lose throttle going down the road but it will still idle and you must stop and put it in park shut engin off recrank and it will run until it does it again


im assuming the reduced power message comes on where the odometer is, try cleaning the throttle body with some throttle body spray cleaner.the carbon build up in the t.b.i. will cause false throttle position sensor readings .if indeed the reduced power warning is coming on and cleaning the t.b.i. does not rectify the problem, the throttle body may need to be replaced. approx. 100.00 at kragen,auto zone,ect

Dec 04, 2009 | 2003 GMC Sierra 1500

3 Answers

Stalling, 'reduced power' light, and OBD code P1125 Manufacturer control air metering...


These trucks have a drive by wire system,we seen a` lot with a broken ground wire on the rear of the drverside cyl head,this is hard to see just feel and give the wire a tug .If the wire is loose or broken the reduced engine power light will come on.

Feb 02, 2009 | 2004 Chevrolet Silverado 1500 Crew Cab

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