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 the owner's manual.
Check out this site http://www.nadaguides.com/
Check out LMC Truck catalog.
check ground first
You must have an engine scanner to do that.
Check for vacuum leaks.
It requires an engine scanner to do that.
Check bulbs, fuses, and check for wiring problems