Question about 2004 Chevrolet TrailBlazer

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Code drive 5 . My 2004 trailblazer posted a code "drive 5". It showed the "reduced engine poweer" light, and would not respond to the accelerator pedal. I had been driving in slow traffic. I pulled over, turned the engine off, and restarted it. The reduced engine power light went off, and it drove fine, but the service engine light stayed on. The next day, I filled it with gas, and then the service engine light went off. Then I had the code read and it came up "drive 5".

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Thottle body sensor, accelerator pedal sensor, restricted air flow...will all trigger this fault light. Go to your local Autozone, they will run an OBD scan for free, and explain the fault codes to you so the correct repairs can be made.
Good luck...i hope this helps, please rate me a fixya.

Posted on Jul 25, 2009

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When ever the computer can not determine the problem, it will reduce power to save from more damage. You will need to have a dealer scan the vehicle for more information.

Posted on Jul 23, 2009

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1 Answer

04 chevy trailblazer Reduced engine power


You have a problem with the electronic throttle control . You need to have it checked for codes , could be a few different thing's Pt 1 2007 Chevy 2500HD Reduced Engine Power Warning Fault Code P1516... P2138 APPS Accelerator Pedal Position Sensor Fix 3 5L Chevrolet Impala Lot's of codes for this , Drive by Wire Function and diagnostics by Wells


Feb 24, 2016 | 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:

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

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Ignore accelerator pedal input.

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

Drive by Wire Function and diagnostics by Wells

May 04, 2015 | 2003 Chevrolet Chevrolet TrailBlazer

1 Answer

I replaced my accelerator pedal position sensor on my 03 trailblazer because reduced engine light came on and when gas pedal pressed it did nothing. with new sensor it still does nothing, what do I do


The most common problem on your trailblazer if it has a 4.2 liter engine is the cam shaft actuator gets stuck due to a clogged screen. If the reduced engine power light is on then the check engine light should also be on. You need to check for fault codes to see what step you need to do first.

Oct 30, 2014 | Cars & Trucks

3 Answers

I just had the transmission in my 2004 trailblazer


There is a harness in the engine compartment that has grounded out or shorted. The message 'reduced power' will flash across your driver information display on your gauge cluster. This is somewhat of a common problem for full size Gm trucks (silverado, tahoe, suburban, etc .) and trailblazer/envoy vehicles.

Sep 26, 2014 | 2004 Chevrolet TrailBlazer

4 Answers

Reduced power while driving, car will die and you have to put in park and restart reduced power light will come on


Thus issue is common for the Chevy Trailblazer. That being said, many mechanics will chase the symptoms to issues that are not the real problem causing heafty repair charges. The solution boils down to one of two things;

1. Replace the ignition switch (electrical part). They seem to burn out.
2. Have a full scan of the main computer, it may be bad or going bad.

The later of the two solutions will be the more costly repair. Therefore try the switch first. Good luck

Apr 23, 2014 | 2004 Chevrolet TrailBlazer

1 Answer

2003 Chevrolet Trailblazer Reduced power light


You need to perform an engine control module fault code test. Autozone and others do this for free.

Jun 22, 2017 | 2003 Chevrolet Trailblazer Ext

2 Answers

Chevy Reduced Engine Power and Auto Gear Transmission


still sounds like another sensor is bad. take it to shop and have it tested would be my suggestion. good luck.....

Aug 13, 2012 | 2002 Chevrolet TrailBlazer

1 Answer

Error code p1271 on trailblazer


That trouble code is faulting the accelerator pedal sensor. The APP sensors are located in a TAC module mounted to the accelerator pedal bracket. There are three individual APP sensors within the TAC module. Three separate signal circuits, low reference circuits, and 5v reference circuits are used to determine the accelerator pedal position. The APP sensor signal voltages increase when the accelerator pedal is depressed.

Nov 26, 2011 | 2003 Chevrolet TrailBlazer

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