You go to a advance auto parts store and ask them if they will scan you engine for you. Thay will do it for free. NEUTZ
You can't, you must use a scanner.
How do you reset check engine light for the 2009 Chevy trail blazer?
The idle speed is NOT adjustable it is computer controled. Is the check engine light on ? if so then you MUST have the engine scanned with an engine scanner to see what is wrong.
YES, It sure can if that is the problem. FIRST you need to have the engine scanned with a OBDII engine scanner to see what CODES the computer has stored.
check ground first
Check the owner's manual.
Check out LMC Truck catalog.
Check out this site http://www.nadaguides.com/
Check for vacuum leaks.
You must have an engine scanner to do that.
Use a diagnsotic code scanner to find out why the light is on, repair the problem and if the light doesn't go out after the problem is solved, it should after the engine has been started about 3 times.
Check the motor mounts.