Question about 2004 Chevrolet TrailBlazer
Service Engine light blinks while in drive
As we all have done since 1981 --some 32 years now
CHECK FOR CODES--first & every time you get a check light
Blinking verse steady is not always good
Got with the solution fast
Posted on Dec 01, 2012
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Posted on Jan 02, 2017
The light is flashing because the engine is miss firing. The first thing I would try is replacing the distributor cap and rotor.
Posted on Apr 25, 2009
Code p0300 is the code for "random missfire detected". The "check engine" light is flashing to warn you that severe damage is being done to the catalytic converter.(very expensive)..
Posted on Apr 28, 2009
If the light was flashing, then it means your engine is misfiring.
A solid light can mean anything from a loose/faulty gas cap to a transmission issue.
This light comes on when the computer detects a fault of some sort in its diagnostic tests. If it keeps detecting this issue, the light will remain on. If the light turns off, then it has detected that the issue may no longer be present.
In order to find out what the exact reason was for your light, You need to have your car computer scanned to retrieve the code that the computer would have stored when the light triggered. Most garages will do this free of charge. The code will tell you what may have caused the light to initially turn on.
Posted on Oct 19, 2009
If your check engine light is blinking, you can take your car to Autozone, Advanced Auto or other parts house and ask them to get the engine codes. This ios a FREE service. It sounds like your camshaft positioning sensor, Cam Positioning sensor is bad. This is how comuterized systems tell where the cam and crackshaft are to set the timing. It sounds like you have timing issues.
Posted on Mar 22, 2010
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