5.3L Starting Issue

[SGinn722]

I have an 08' Yukon with the 5.3L. Within the last 6 months or so my truck has begun to act as if the motor doesn't want to fire when the starter turns over. It usually always does crank but sometimes the starter has to turn for a good while before the motor cranks. Other times the starter barely turns and the motor bogs down and barely cranks. Once it's running it runs perfectly so I don't think it's an issue with plugs/wires/coils. I replaced the starter but wound up wasting my money when it didn't fix the problem. I've heard of others having similar issues but has anyone definitively found what the problem is? It's more annoying than anything else. Never used to do it.

 

[AZSCTACO]

Fuel pump.......

 

[Physh1]

Sounds fuel related, especially if there is no SES light. Try changing your fuel filter...if that doesn't help your pump may be failing but, ideally, you'll want to do a fuel pressure check.

Cameron

 

[SBCT]

Battery

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[SGinn722]

I had it in my head to start simple with the filter. I'll change it and see what happens. If that doesn't work I'll have to take it to my mechanic. I've had the electrical system tested and everything checks out. Battery is strong and holding voltage. Thanks,

 

[Physh1]

Battery

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If the starter is turning over freely, as he stated, it's not a battery issue.

 

[AZSCTACO]

Did it sound like this?

http://youtu.be/y1dGapT6eEQ

If so....fuel pump went out.

 

[Physh1]

Did it sound like this?

http://youtu.be/y1dGapT6eEQ

If so....fuel pump went out.

Is going out would be the better way to put it. If it was done totally it wouldn't start...

 

[SGinn722]

Did it sound like this?

http://youtu.be/y1dGapT6eEQ

If so....fuel pump went out.

Every once in a while it will do that. Other times the starter turns over for a split second and the motor barely catches. It eventually idles up and runs normal within a few seconds.

 

[SBCT]

Definitely sounds like a possible amperage problem with your battery.