got a weird noise coming from the passenger side under the dash. it's a gurgling noise that happens when i start the truck and when i step on the gas for about the first 5 minutes after i start the truck. what could possibly making that noise?

 

happens to me too. pretty sure its normal. usually its just a little hick up at the start

 

antifreeze circulating through the heater core.

 

air in the cooling system.

air collects in the heater core because that's the high spot. its normal to have some air after a coolant refill or flush, but it should work itself out after a few days. if not, then you're leaking coolant and sucking air somewhere...

 

A common problem. I jacked the front end up as high as my 3 ton jack would go, removed radiator cap, warmed engine up and squeezed top radiator hose until no mare air came out. Put rad. cap on, no more gurgle. Same thing can be done by parking headed up hill.

 

guess ill go find a hill then

 

Then I am off to find a hill as well. Thanks guys.

 

just put the passenger wheel up on a curb. no need to go searching for the perfect hill.

 

Or drive it up on ramps.

 

or up a tree

I just had to add to mine, the gurgle went away