Hello, I got a few questions about the 30,000 mile service. I have a
2004 Grand Cherokee Laredo, 4.0 liter w/Selectrac (part time and full time 4x4). It was purchased in early 2003 though.I'm at 28,000 miles now and have 2 Jeep dealers nearby. Their service on most items is the same: oil change, change trans fluid/filter (not flush), check belts, hoses, PCV valve....check coolant and flush if needed, rotate tires, emissions, etc.
One big differerence is this:
Dealer #1 charges $479, but also replaces the spark plugs and "inspects basic idle and set engine controls to factory specifications".
Dealer #2 charges $359 and does NOT replace spark plugs but includes "perform throttle body-fuel inductions service".. What is that? Sounds like cleaning the injectors (?)
My basic question is this: Do you recommend changing the plugs at 30,000 miles? I'm quite sure I don't have platinum plugs and I don't think I've ever replaced plugs at 30,000 miles. The vehicle runs great and I want to maintain it though.
Also I plan to request a transmission FLUSH, even if I have to pay more. (I've done this on all my vehicles) Also, should I request 4x4/transfer case service too? This is listed as a seperate stand-alone service and charge. What does the 4x4 service get you?
Thanks!
Jim