I havea 2000 suburban and i think its the 5.3 v8 and it has 160,000 miles. and my exhaust smoke is a blueish / whiteish color........... what does that mean ??? Could it be something serious ??? Thanx in advance

 

Do you have oil consumption or overheating problem in your truck?

 

blue = oil
white = coolant

 

Its consuming oil , how do I fix this???

 

new rings? $$$$$$
motor honey? $

 

Check,or have compression Test,Dry+Wet.If there is diffrence in wet readings,then you need to replace,piston rings.
I can say its better to rebuild the engine.

If there is puff of smoke,while cranking,then you need to remove cylinder head,do valve job,and must replace valve guides/or valve guides seals. but before throwing dollars,need to find the root cause first. piston rings and valve guide seals are the only cause of oil consumption. Hope you got it.