Question about 2000 Buick Century

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Chevy Check Engne light on for 20 seconds at start-up

My 2007 Chevy Express 4.3 litre 27,00 miles has a check engine light that illuminates for 20 seconds after start-up then it goes out. I checked the system with a code reader yet no codes are stored. Could it be emissions related?

Al

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If you have an 07 then you have a 100,000 mile warranty. If you are under that then let a dealer worry with it. If not go to Auto Zone and they will scan it for free, then you can better determine what direction to go. Good Luck

Posted on May 20, 2009

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Posted on Jan 02, 2017

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Abslight stays on. How to fix? This is a2007trailblazer?


First you need to have EBCM - electronic brake control module check for DTC'S - diagnostic trouble code's . If the light is on there is a code stored . I think most part stores can do this and for free . After you find out what code is stored , looking up that code in service repair information for diagnostic trouble shooting chart would be next step . There are a few codes too.
DTC C0035 or C0040
DTC C0045 or C0050
DTC C0110
DTC C0131
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DTC C0241 or P0856
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Find the code do the diagnostic's , fix the problem , wiring issue's , a sensor , bad module ,what ever it is . The light will go out then . Here is a sample of code discription .
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1 Answer

Was there a bulletin issued to extend a warranty for spark plug wires, maybe #10250


Yes....10 years or 120,000 miles
Condition
Some customers of 2007-2009 model year Chevrolet Equinox and Pontiac Torrent vehicles equipped with a 3.4L engine (LNJ), and 2008 Chevrolet Express, Silverado; GMC Savana, Sierra vehicles equipped with a 4.3L engine (LU3) may comment about rough engine operation and the illumination of the Check Engine Light. This may be caused by spark plug wire boots that do not provide a sufficiently robust dielectric seal to withstand the high voltage required to fire the spark plugs.
Special Coverage Adjustment
This special coverage covers the condition described above for a period of 10 years or 120,000 miles (193,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. Dealers are to replace all spark plug wires and, if necessary, the spark plug. The repairs will be made at no charge to the customer. For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after January 5, 2011, are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to January 5, 2011, must be submitted to the Service Contract provider.
Vehicles Involved
Involved are 2007-2009 model year Chevrolet Equinox and Pontiac Torrent vehicles equipped with a 3.4L engine (LNJ), and 2008 Chevrolet Express, Silverado; GMC Savana, Sierra vehicles equipped with a 4.3L engine (LU3).

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I put 3.5 litres in, start the engine check the oil light goes out after a few seconds, check for leaks from the filter, then switch off engine.

Wait at least 3 minutes, check oil level on dipstick and top up to maximum.

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The light is not designed to tell you when you are low on oil. That is what the oil dipstick was created for. These lights are usually only good for letting you know when your engine is is so low on oil that is has most likely already sustained some damage. It is there to let you know to get off of the road IMMEDIATELY.

My question would be this: When was the last time you had an oil change? How long since the oil change did the engine go without the oil level being checked? A new engine will use more oil than one that has 50,000 miles because the piston rings can take that long to get seated in. That car only holds 4 U.S. quarts (3.8 L). On a new 4 cylinder engine, it is not unusual to use 0.5 quarts (0.47 L) every 1000 miles. At that rate, it would only take 7000 miles to get to the point you described (0.6 L left in engine).

Is it your fault? I do not have all the facts with which to make that call. All I can say is look at the information above and you decide.

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There is an under-engineered ground in the reverse circuit. If you back up with the dome lights on, it could blow that fuse. There should be some extra fuses under the cover of the fuse block.

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My 2007 chev express vans check engine light comes on and flashes 4 or 5 times about every mile for the first 10 miles in the morning then never comes on again until the van is cold the next morning. Any...


Take the vehicle to Auto zone to clear the computer. It may just quit doing that after the codes are clear. if the flashing continues the computer is at fault

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