A tune up would involve changien the spark plugs, and filters mostly. That would mean air and fuel filter. You could also change the wires if they look bad, but on your truck you have the pug wire/connected to the coil. Alot of shops out there are pretty honest, they want your work back. You dont' need to go to a dealer for that. If your service engine light is on then it has to be scanned to see what it is. I could also be a converter that is doing this, but a mechanic should check that out. Ifyou go on the site here and look under tune up it wil pretty much go through what to do. If you have somehand tools you should be able to do that. Also one other thing check all your grounds and make sure they are clean as that can cause this too.
Thursday, September 23rd, 2010 AT 8:32 AM