What would keep your 1994 Tahoe from starting when you turn the key?
I would say a dead battery.
Chevy Tahoe 2000 5.7 engine i have instilled a procharger supercharge the problem is that when you accelerate the check engine starting to plink and when you slow down its stop blinking?
If you are referring to the valve cover gasket developing a leak, then, no..this wont keep the car from starting. If you are referring to the head gasket, then , yes...this could prevent the car from starting. Check the distributor cap gasket or o-ring. This could also keep the car from starting on rainy days or dewy mornings...Good luck!! ...BB