2004 gmc sierra 1500 SLT 5.3 losing oil and coolant

[Mikemane91]

I'm losing oil and coolant but no signs of leaking. 180k miles. Any ideas? Hopefully not a blown head gasket?? No smell or smoke from exhaust.

 

[Offroadnt]

Gonna need allot more details, make and model of vehicle, year, mileage, work done lately etc..

How fast is your oil and coolant going down? Are you keeping track of your oil consumption? If they are both dropping that is kinda good news in a way, at least your not contaminating you oil or coolant. If your vehicle isn't dripping it has to be going out the tail pipe unless someone is stealing it... Have you checked your transmission oil level? Could be leaking inside your radiator coolant into the transmission oil, I've never seen it on light vehicles but it is possible, seen it on heavy trucks.

 

[Mikemane91]

2004 gmc sierra 1500 2wd 5.3 v8 and yeah coolant loss I'm not so sure about oil. Blows a lot out first time crank up (sometimes) does the same on and off after work/ school. Then goes away after a minute or so. Condensation under oil cap but oil is not milky. Check engine light( emissions) constantly tells me to tighten fuel cap.

 

[Mikemane91]

183,000 miles on it. Oil pressure 40 on idle and 60 around 60-70 mph. That's about it......