Warm shut off then start up

Ive been having this problem with my truck for a while. It will start up just fine first thing in the morning, but once I shut it off and try to restart it, it will crank for 5-8 seconds before it fires up. The starter is fine and so is the fuel pump, ECM and coil. It has also received tuned up within the last 500 miles. I personally think it is the fuel pressure regulator. But watch all three vids of this before you tell me what you think.
Details: I drove the truck around for about 15 minutes, killed it then immediately restarted it without any problems.
And please spare me the gm sucks comments, its my truck and I have no regrets about having it.

Category:

Autos & Vehicles

Tags:

• fuel pressure regulator
• problem
• gmc
• yukon
• denali
• 4x4
• 5.7
• 350
• tahoe
• 2000

[Numa1EBS]

Sweet!!!!