2004 trailblazer w/175,000 miles. If u crank it and let it idle for 15 mins then shut it off it won't restart. Let it sit for 1 to 2 mins and it will restart. Idle for 10 mins and again it won't restart till u let it sit for 1 to 2 mins. I took the housing off at the throttle body. When I shut it off and it won't restart I can spray a little starter fluid in it and it'll restart without the wait. Tried a fp relay but it didn't help. Don't think a fuel pump would be working,stop and then 1 to 2 mins later work again. Any ideas would be greatly appreciated.