Engine runs rough and is emitting a strange odor
SOURCE: 2004 SILVERADO SERVICE ENGINE LIGHT CAME ON
You'll need to get the trouble codes read from the truck's computer memory. The Check Engine Light comes on when codes are stored. You can go to an auto parts store and ask if they read them for free, buy a code scanner, or take it to a shop. Without those codes we'd just be guessing at what's wrong ;-)
If you get the codes you can look them up here for more info or post back here - http://www.obd-codes.com/trouble_codes/
SOURCE: check engine light is on, motor runs rough, sometimes stalls
Go to Advance or Auto Zone and have them run an obd scan on it and it will pin point why your light is on and could solve your problem. This is often done for free.
SOURCE: running very rough, and has
Flashing is BAD, it means theres a misfire causing Catalytic Converter damage.
SOURCE: 2003 Chevy Blazer idles low
Flashing service engine lights are very bad, means there is a problem that can potential cause harm to the engine. Sounds like you may have a bad coil. Take it to a place like Autozone which can check the check engine light. They'll give you a print out that will give you a better idea on what's going on. If it's a misfire on a cylinder or two, check plugs and coil, also could be an injector.
SOURCE: chevy hhr esc comes on service traction engine light comes on
Did you check for codes & google them,
to see what system has a possible fault
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