Temp Guage Says im getting hot

[BlazerLT]

Don't get one from GM, get a stant from your local parts store.

[deadeye]

Sorry to hijack someone else's thread but this seems like a good time/place to ask this... When replacing the cap, how worried should 'we' be about how much air is 'there'?! Top it off totally and turn the cap down into the coolant to minimize air or top it off normally and just put the cap on? No biggee? The reason I ask is that you've stated before that air and Dexcool don't get along real well.
Thanks

[BlazerLT]

You completely top off the rad and fill the overflow tank to the cold fill level.

[chcknugget]

When replacing the radiator cap, fill the radiator with as much as it can hold. I turn on the engine and let the coolant "settle" and then top it off again.

[BlazerLT]

Originally Posted by chcknugget

When replacing the radiator cap, fill the radiator with as much as it can hold. I turn on the engine and let the coolant "settle" and then top it off again.

Nah, you put the rad cap on after filling the rad and allow the pressurized closed loop system to force the air out of the cooling system.

Then the next morning top it off.