the is a conector under the dash on the driver side called a OBD2 conector. the is the port that is used to read troble codes. Take the truck to your local auto zone and get them to read the codes for you, then get them to give you the print out on the codes from there computer inside the store this will explane what is wronge. this procedure will only work if the check engine light is on.
There are approx. four pages of codes, you need to have checked with a scanne to see which set.
End of message, no codes present.
If the check engine light is flashing a spark plug misfire has been detected - have it scanned for trouble codes to diagnose and repair as soon as possible
Fix the cause of the codes, and clear the codes with a scanner or by unhooking the battery.
Make sure your Truck is in good maintenance. New plugs, air filter, fuel filter etc. Then check engine codes. Also may want to check coil packs, injectors and give a compression test.
HI If it's drivable take it to Auto Zone, they do it for free.
cant you need a scanner to check codes from 1996 and newer
Then you need to have the codes read with an OBD scanner.
Have vehicle scanned to determine the problem and have codes cleared
CHECK THE TIMING
Fix the problem and hook up a tech 2 to it and clear codes
If the check engine light is flashing with the engine running , that means a spark plug misfire has been detected