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Re: I have a 2003 Yukon XL with 70K miles. What...
Coolant flush and fill.. differential oil changed out ( assuming you have done trans service already also ) .. driveline (u-joints) and steering linkage lubed , fuel filter(s)..and all belts /hoses inspected ... have fun :)
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not unless you travel in extremely dusty/sandy roads. Most ppl dont change their fluids for the life of their suvs. If you drove thru deep water often i would also change it but the front and rears are sealed and synthetic fluids is man made and takes an extremely long time to break down.
jeeze, so many "common" causes. but THE most likely cause is an oxygen sensor out of range. replacing same and driving several miles might get you lucky and save some money. but note, a restricted fuel or air filter will likewise make this sensor report bad data and set the same code. in other words, don't ignore maintenance issues...
For a 2003 used Honda odyssey, the following should be required:-
1. Replace the timing belt. (repair estimates at www.repairpal.com) 2. Drain the whole oil out of the engine and transmission 3. Replace the brake pads 4. Most of all run a diagnosis scan on the vehicle to detect any other possible maintenance that will be required.
you don have to do much to that gmc as long the coil is good, just replace all 8 spark plugs, air filter and basic oil and filter change; use good brands of oil, such as castro, mobile, shells ect. if your the original owner and have high miles and never have replace thermostat, I would go ahead and have it done, I would not wait until it fail and over heat on you. if you have done lot of pulling with your vehicle and have 75-100k mile, have your transmission flush with new filter, it will give the tanny life last a bit longer.
Really depends on whether the maintenance has been kept up on it with records and how hard the car has been driven. Hopefully its been taken care of. I'd say a minor tune up. Plugs, wires, oil change. Check and possibly change tranny fluid. It should be good, that engine will go 250,000 - 300,000 miles without much trouble if you take care of it. True story. Hope it helps!