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2002 Chevrolet TrailBlazer - Page 7 Questions & Answers
Why does clock reset itself each time I start the vehicle?
sometimes if the battery is weak enough that could cause a drain and suddenly the memory fails and then it resets to 12 oclock.Also the stereo system uses two 12 volt positive feeds one is a constant that many times is fused by the same fuse that feeds the lighter socket but also many times only one of the fuses on the fuse chart will mention the stereo when in fact another fuse is feeding a different circuit in the stereo.
You could have weak charging/starting system connections connections due to rotted/corroded battery/alternator/starter/engine block ground posts/connections or the cables could even be rotted internally that connect up to those connections.Again weak or poor grounds or loose connections cause a drain on the whole system that could over draw some circuits causing them to temporally loose their proper operating voltage/power.
Find shift lock
Do the brake lights work? If not then you have no power to the release solenoid that locks the shifter in park, check them.
When i first turn the
is the alternator doing its job! at battery with car off, should read at least 12.6 volts. ( with all accessories off ). if alternator is ok, then at battery when its running should be at least 14.2-14.7 volts with accessories off, make sure belt is tight and ok. if in doubt, take it to auto-zone and they will check the voltage for free. good-day !
Where is the EGR Valve located ?
It usually is by xhaust and intake. A haynes manual from partstore will show. If u can blow thru valve..then its probly just the gasket where it connects thatsbad
Where is the egr on a trail blazer 2002 4.2 l
I can't find any listing showing that this 4.2 6 cylinder engine uses an EGR valve, and I have read chevy owners saying the same thing about this engine. It does have a block off plate, but no valve mounted. If had one it would be bolted to the top passenger side of the engine
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