2002 Tahoe 4×4. Small oil drip has turned into big mess over time. I always keep an eye on my oil level especially now that the drip has become excessive. Coolant light comes on sometimes and when I checked it it was pretty low. With all the oil I'm losing I thought it would be low two, but it's not. In fact it is over full. Could be from not checking it while parked on a level ground. My driveway is slanted a bit so I may have added to much thinking I was low. I'm not sure. I suspected a blown head gasket but I don't see any signs of coolant in the oil or oil in the coolant. I also don't see a coolant leak either. What sucks is there so much oil all over everything I can't tell where the oil is coming from. It seems to run ok except for a slite miss at idle. I don't smell coolant and it hasn't overheated yet. I'm also surprised I don't smell oil burning with the way it has covered the undercarriage. Nothing coming from tailpipe as far as I can tell. Where should I go from here?

 

Welcome from Florida. Clean the undercarriage and then start it and watch to see where the oil is coming from. One place to check is the oil filter. It could be damaged or the seal could be bad. Sometime the seal from the old filter stays on the engine and when you install the new filter you have 2 seals and that will cause a leak. You might be lucky and have the leak from the oil filter.

 

 

And if the truck has an oil cooler the lines to it are known to fail over time.