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2003 avalanche will start after it sits for a while but dies a few seconds later

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  • 48 Answers

Sound like to me it is TPS Switch( Throttle Possitioner Switch).
Or Fuel Pump Relay? Either will cause this to happen due to signals picked up by ECM and PCM. Hope this helps you out?

Posted on Oct 22, 2013

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Posted on Jan 02, 2017

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SOURCE: starts but won't stay running

Have someone help you do the following. Turn on the vehicle,before it dies,quickly tap the idle air control valve with a wrench or anything you have. If the engine does not die after you tap the IAC,this means that the IAC is faulty. The IAC is under the plastic plate that is behind the throttle body.

Posted on Sep 24, 2008

  • 2 Answers

SOURCE: 2003 Pontiac Vibe starts and

yeah its prolly a lil late to tell ya what to do now but i would say its the fuel pump im about 99% sure

Posted on Jan 27, 2009

  • 38 Answers

SOURCE: my 98 z71 will start but a few seconds later it dies

yes but it has to have a certain amount of fuel pressure idk exactly what the specs are on your truck but check the fuel rail with a fuel pressure gauge if its not produces a certain amount of fuel it wont run

Posted on Aug 02, 2009

  • 275 Answers

SOURCE: 2003 Mazda Tribute will start, idle rough for a

check the fuel filter air filter and vacuume lines if they all good make sure the spark plugs are making a bright blue spark

Posted on Jan 20, 2010

  • 959 Answers

SOURCE: Problem is with 2003 Nissan Sentra - was left

Sounds like the fuel pump is bad.... I would have the codes read and start there... but my imediate suspicions are the fuel pump.

Posted on Sep 25, 2010

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1 Answer

What causes my 2002 avalanche to die after it runs for a few seconds

Loss of fuel pressure, loss of spark is likely. What you need to do is have the fault codes in the memory of the engine control computer. You will need an OBD2 fault code reader, it hooks to the diagnostic link port under the dash in front of the driver.

Jan 13, 2017 | 2002 Chevrolet Avalanche

1 Answer

2003 avalanche cranks but dies out

GM has had problems with their antitheft/security systems for about 30 years. The problem is that when the system can't read the key properly, the computer shuts down the fuel injectors after 2-5 seconds of starting the vehicle. This to prevent HOTWIRING the vehicle, but tends to hurt owners when it fails more often.

Jan 26, 2014 | 2003 Chevrolet Avalanche

1 Answer

02 chevy avalanche start and die

Try checking the condition of the following:

1) Spark plugs, leads and coils.
2) Air filter
3) Fuel filter.

Please report back after checking those, replacing and/or testing.

Nov 12, 2012 | 2003 Chevrolet Avalanche

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The airbag system performs a diagnostic self check everytime the car is started the airbag light will illuminate for a few seconds then turn off if the system in in a fully functional state. If the diagnostic finds a fault the light will stay on and the airbag system will place itself in operation negitive state. This requires a professional who has the skill set and proper tools to repair this safety feature

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