Question about 1999 Chevrolet Silverado 1500

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Ihave a 99 chevy silverado and the service engine soon light just started flashing, it also started running ruff when I'm at a stop sign, almost like it's chugging. Any suggestions?

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Check the Mass airflow sensor and oxygen sensors. The most common cause of this problem is one or both of those going bad.

Posted on Jun 16, 2009

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My 2004 Silverado starts for a second then stops running. Checked fuses under hood. All are good. What other causes might there be?


The anti-theft system can cause this problem, do you have a security light on or flashing ? or any other lights lit on the dash ,check engine light ,a yellow wrench symbol , service vehicle soon ? Turn the key on to the run position an wait 6-7 seconds all lights should go out, do they ?

Jan 29, 2015 | 2004 Chevrolet Silverado

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2000 chevy silverado ,5.3 liter engine .service engine soon light on so scanned for problem codes ,results bank 1&2 are running lean .what is the cause or problem that needs to be done to fix


Check for loos connections between the intake and the tube from the air filter. Check if the clamp is loose or leaks in the tube which can cause an incorrect reading. Other than that it may be a dirty MAF sensor which can be fixed by spraying carb cleaning or tuner spray in the intake or it may be bad or a bad oxygen sensor;.

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How do i clear the change engine oil soon message. It's a 2007 silverado.


The "Change Oil" message displayed on your Chevrolet Silverado's gauge cluster is part of the Oil Life Monitoring System, standard on many GM (General Motors) vehicles. The message appears when it's time for an oil-change; the interval is based on your driving habits (for example, it may appear more frequently if you engage in a lot of stop-and-go traffic). Once you change your Chevy's oil, the message will not disappear; the system must be reset. The process is a bit different between Chevy Silverado models.
jQuery('.intro .thumbnail').each(function(i,e){ jQuery(e).find('img').one('error',function(){ jQuery(e).remove(); }); }); Difficulty: Moderately Easy Instructions
    2007 to 2010 Chevrolet Silverado
  1. Step 1 Insert your key and turn the ignition to position "C" (Run/On) without starting the engine.
  2. Step 2 Press the second button from the top on your information center (next to the steering column, car symbol) until "Oil Life" displays on your odometer cluster.
  3. Step 3 Press and hold the "Reset" button on your information center (check mark symbol) until the "Oil Life" display changes to 100 percent.
  4. Step 4 Turn your ignition to position "A" (Lock/Off).
  5. 2002 to 2006 Chevrolet Silverado
  6. Step 1 Insert your key into the ignition, and turn it to position "A" (Run/On) without cranking the engine.
  7. Step 2 Depress the gas pedal three times within five seconds. The "Change Oil" message will begin to flash.
  8. Step 3 Turn the ignition to position "A" (Lock/Off) once the light stops flashing (about 10 seconds).

Jul 12, 2010 | 2007 Chevrolet Silverado 1500HD

1 Answer

99 chevy silverado 4x4 getting code p0304 coad changed plugs wires and coil still getting code, runs rough and cranks for a long time before it starts


You could have a faulty Fuel injector problem with your poppet valve. There common to go bad and start to leak causing misfires and ruff idle. There is an upgrade to the CSFI to covert to MFI system.

Here is a link that should help you with your P0304: http://members.shaw.ca/betterthanyoutoo/Sticking%20Poppet.htm

Good luck and thank you for using fixya

Mar 08, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

1999 chevy silverado seveice engine soon how to recet light


must have a scanner to reset light but it will come back on until you fix the problem have the system checked to get trouble code that will let you know where to start

Feb 17, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

Ruff idle on cold start. Idle goes up and down for about five minutes. 99 chevy silverado with the 5.3


bad MAP sensor or throttle body base gasket is leaking also the idle air valve ports can be clogged and the idle air solenoid is weak or bad

Jan 21, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

2001 CHEVY SILVERADO 2500HD BATTERY LIGHT FLASHES INTERMITTENTLY. NO PROBLEM WITH BATTERY OR WITH ALTERNATOR, BOTH OF WHICH TEST OK. NO PROBLEM WITH STARTING OR RUNNING, EXCEPT FOR THE FLASHING BATTERY...


2001 chevy silverado 2500hd battery light flashes intermittently. no problem with battery or alterntor. both tested ok. no problems with starting or running. voltage gauge reads just above 14. no problems with anything except battery light flashes. what could be the problem?

Dec 04, 2009 | 2001 Chevrolet Silverado 2500HD

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2001 gmc safari flashing service engine soon light


id check mas air flow sensor maybe 02 sensor might bet the mas sensor

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99 chevy silverado service engine soon light is flashing when driving


you have to read out the codes. po300 is misfire detected. maybe a coil or injector. could also be intake leak

Nov 06, 2008 | 2002 Chevrolet Silverado 1500

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