OK is it normal for the system to be pressure up about a minute after I first start it? God I hope it is, cause it will only mean one thing if it isn't.

 

how long have u noticed this going on

 

The gauges in these trucks are notoriously inaccurate. The guys that actually count on the oil pressure gauge install an after market pressure gauge. It's a cheap, simple install. The sending unit's also go bad on them quite often and will quit showin pressure all together.

Just re-read your post, and I'm confused, no comments from the peanut gallery either. Are you talkin about your water temp gauge or your oil pressure gauge here. I see the title is about coolant but in the thread you talk about pressure and the only stock pressure gauge is oil.