Question about 2003 Chevrolet Tahoe

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I have a 2003 Chevrolet Tahoe the GAS pedal goes all the way to the floor and when pushed I do not accelerate and the information center on the dashboard say reduce pressure what could be the problem

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Sounds like you are having a problem with the throttle body position sensor, after replacing sensor replace air filter and clean out air box and hose if possible have some one spray the inside of throttle body with throttle body cleaner while vehicle is running do not over spray inside of throttle body as too stall motor. After cleaning throttle body reconnect everything, add a container of injecter cleaner to a full tank of gas take vehicle for a test drive, don't worry if you get a little black smoke it's just the cleaner working.

Note: since this is a fuel, air problem you should have fuel line tested for how much pressure is in the line. Problem could be in the fuel filter and pump that's inside fuel tank if it is this replace all parts pump screen filter. If this is the problem you should from now on make sure that the tank never goes below a 1/4 tank, pump needs fuel to keep it wet and so that you do not pick up any dirt in bottom of tank.
It's important that you add injector cleaner on a regular basis, you might want to add a container of water remover in tank in case you have steed your vehicle in a heated garage during this recent cold spell.

Would be a good idea to have it checked at one of your local auto parts store for any codes that may come up, before doing any work.

Posted on Apr 03, 2015

  • Terry miller Apr 04, 2015

    Sherron your fuel filter is located on the inside of your trucks frame, you might need special type of tool to remove fuel lines connected to fuel filter , and some wrenches .


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HI Sherron I'm a little unclear about what you are saying .
Do you mean the gas pedel goes to the floor by it self and then you try to push it nothing or are you pushing it to the floor and you can't accelerate.Then it says reduced pressure on the MILcomputer jargen .Dose it give any #s like PO 100 -PO109 OR A PO400 # OR any thing that says TPC or CROUSE CONTROL.
I need more information you must have codes if the MIL light is on you need to take to a parts store and get them read its free in most stores .

Posted on Apr 03, 2015

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Your dash probably reads "reduced engine power", you likely have a code in your computer also. You really need the code for proper diagnosis. It can be a failed electric throttle body or failed accelerator pedal position sensor (which is made to the accl pedal). My guess is a bad throttle body.

Posted on Apr 03, 2015

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Posted on Jan 02, 2017

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SOURCE: 96 cavalier wont accelerate

You have may have one of the following issues, low fuel press due to a pump or plugged filter, a plugged exhaust system, mainly the cat converter, a defective MAF sensor. Do you have any trouble codes

Posted on Jul 31, 2008

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SOURCE: no pressure clutch pedal goes straight to the floor 1988 holden r

If hydraulic actuated mechanism, loss of fluid, defective master cylinder or slave cylinder at the clutch. Missing pin or other part between slave cylinder and clutch arm. Loose or broken slave cylinder mounting. Missing pin or broken part between pedal and master cylinder. If mechanical linkage, look for broken components or missing pins at moving joints. If you tried to shift into gear with engine running, you may have damaged the transmission gears.

Posted on Aug 11, 2009

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SOURCE: S80 T6 No oil pressure warning light flashes when

make sure the oil level is up to full. sorta sounds like its low and when you go around a corner the oil sloshes away from the pickup tube

Posted on Apr 03, 2010

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SOURCE: 2003 santa fe that has no acceleration going uphill, no power when pedal is floored, won't shift unless I let my foot off the pedal.

Try unugging the MAF sensor. I don't remember if these will run with it unplugged but it's worth a try. If performance improves then try cleaning it with MAF sensor cleaner. If there is no improvement with the above than I would suspect a plugged cat. I don't remember if this year has one cat or three. If it has one you can drop the exhaust ahead of the cat and drive it. It performance returns its a plugged cat. If it has 3 cats than you will need to remove the upstream O2 sensors and use a back pressure gauge to check exhaust back pssure. You should see less than 3/4 psi at idle Let me know if you have any questions and I'll do my best to answer them. Thank you for using!

Posted on Mar 20, 2012

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1 Answer

My 2003 chevy tahoe will not accelerate pass 30mph what could be the problem?

Your problem could be in the Transmission, but most likely it is caused by a sensor / electric part called an Accellerator-Pedal-Position-Sensor (APP-Sensor. If it is the APP Sensor, then you should be getting a signal in the information center saying "reduced power" or a Check-Engine Light.

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How to clear the change oil message in the information center on a 2004 Tahoe

Reset the oil life monitor when the oil has been changed, use the following procedure.
1. Turn the ignition key to the RUN position.
2. Fully push and release the accelerator pedal 3 times within 5 seconds.
3. If the Change Oil Soon light flashes, the system is resetting.
4. Start the vehicle.
5. The oil life will change to 100%.
6. If the Change Oil Soon light comes back on, the system has not reset. Repeat the procedure.

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2003 Chevy Tahoe 4X4. Started driving and vehicle would not accelerate above 40 MPH. Attached a computer diagnostic to it and it gave a code of P1518.

Tac(throttle actuator control) module to pcm(powertrain control module) circuit problem.Check wire connection on the electric sensor on gas pedal.Most likely just a bad and or dirty connection.See this often on work trucks.

Feb 15, 2011 | Chevrolet Tahoe Cars & Trucks

1 Answer

My tahoe is vibraiting every time i hit the gas pedal and keep doing it until i took my feed out the gas what do you think

With acceleration vibrations, you should check all your Motor Mounts. Check for rips, tears or worn rubber.
To check the "play" of these mounts:
1. With a partner behind the wheel, vehicle on, in park and them accelerating; and you watching the motor, check to see if the engine is moving (canting) forward, or left or right.
2. Jack-up and properly support the entire vehicle.
Have your partner now place the vehicle in Drive, no brake and accelerate. Check the engine for movement.
3. Have your partner now place the vehicle in Reverse, no brake and accelerate. Check the engine for movement.

Any substantial movement should have the motor mount(s) replaced.

Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.Com!

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How do i reset the change engine oil light on a 2003 chevy tahoe

Turn your key to the on position(do not start), then push the throttle pedal to the floor three times, turn of the ignition, wait a second or twothen start the engine, this should reset it. Works on the 2000 Tahoe LT 4WD

Dec 27, 2009 | 2003 Chevrolet Tahoe

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How to reset change oil message on a 2003 chevy tahoe

thats an easy one, turn the key to run but do not start the truck. push the gas all the way to the floor and let it back up 3 times withing 5 seconds and it should chime 3 times and display oil life reset in the message center

Jul 11, 2009 | 2003 Chevrolet Tahoe

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2008 Chevy Cobalt, just changed the oil last week and the change oil soon message keeps staying on. How do I reset, have not had a problem before on oil changes car has 12,000 miles

There are a couple of options for clearing the light depending on the features you have on your Cobalt.
If you have a DIC (driver information center) located in the bottom center of your instrument panel cluster or speedometer area, you should have a mode and set button to the left of the steering column. You can use the mode button to scroll through the options until you find the "oil life" percentage the us the set button, push and hold until you see the 100% displayed.

If you do not have the DIC, you can turn the ignition key to the "run" position ( do not start the car) and push the accelerator pedal to the floor and back 3 times in a row then turn the key off. That should clear the light for you.
Good luck and let me know.

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