>I don't know exactly what the problem is but I would appreciate
>>anyone's help. I seem to be refilling my coolant every other
>>day. I checked for leaks, which are not present, replaced the
> radiator
>>cap, and both did not help. The temperature gage on the inside
>>doesn't rise. After I do my driving, I park, turn off the
>>engine, I hear like a bubbling or some sort of faint sound that lasts
>>for about 30 seconds (could be from the a/c). I get out of the
> tahoe,
>>take a look underneath and a puddle of coolant is on the ground. > This
>>happens almost all the time. The tank empties. Sometimes there is > no
>>puddle on the ground after I drive however I do need to refill my
>>coolant reservoir on a regular basis. I do not know what is causing
>>the problem. A friend of mine said that it could be the water pump.
>>Any expert advise would be greatly appreciated.
>
> Sounds like engine is hot went you shut it down and it boils the
> coolant when it shuts off and blows off with force. Are you a high
> consentration of antifreeze? Higher consentrations increase boiling
> point. Try at least a 60/40 mix for starters and some times a lower
> pressure cap helps too because the venting is less violent.