Hard Start

[TMac68]

Have 2001 Sierra Z71 1500 with 5.3; having problems starting, I crank at few revolutions then turn ignition off then back on. Once I've heard pump stop It starts right up.

Not sure where to begin.

[vandenbroekjj]

Maybe beginning signs of fuel pump going out? Throw a pressure gauge on it to see if it's weak? While running.


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[Supreme Pizza]

Could you be more specific about the symptoms? 

 

Starting fresh, If you turn the key to the "on" position and wait 60 seconds, and then crank the starter - does it start normally?

 

If you spray some starting fluid into the air filter and then crank, does it start right away? If so - you have a fuel problem. If not, you have an electrical problem. 

 

Its interesting that you post this, because I worked on a car today with the same symptoms. 

 

For your rig, I would do a full tune up, and clear all the OBD2's, then go from there. 

 

 

[Colossus]

Betting it's the pump and/or the fuel pressure regulator (FPR)  VERY common on the GMT-800s. 

[TMac68]

From what I have read, its probably the fuel regulator. And yea I probably should do a full tune up. Thanks for replies