hey guys. i have an 05 5.7 and now that its getting cold out ive been having a problem with my oil pressure gauge/switch. when i go out in the morning to start the truck the needle wont budge on the gauge and then the check gauges light comes on. so i shut the truck off and start it again and then it works fine every time. and lately its been doing it when i get out of work too after an 8 hr day. do u guys think that its just the switch/sensor thats bad on top of the oil filter housing? was planning of replacing that tonight to see if that works.

thanks guys