What year truck are we looking at? I'm assuming it's an '04 to '08, so here's what we've got.
The plugs are a pain in the butt and you'll want to let the dealer do it. There aren't any plug wires on your vehicle. It uses a COP, or Coil On Plug setup which means there are eight coils... 1 for each cylinder. It also doesn't hurt to clean the throttle body. This can help eliminate rough idle. Base idle speed on these trucks is usually 625 RPM.
In regards to the spark plugs, some folks have recommended Brisk plugs. See this thread:
http://dygytalworld.ehost-services13...read.php?t=526
Hope this helps.
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