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My truck is sputtering but only when I’m under load like…

My truck is sputtering...

My truck is sputtering but only when I’m under load like during acceleration, I am throwing no codes so I’m not sure how to proceed

Mechanic's Assistant: How old is the transmission? Have you checked the fuel filters?

Truck has 107k on it no never changed filters

Mechanic's Assistant: What is the model/year of your GM?

2012 Sierra 1500 5.3

Mechanic's Assistant: Are you fixing your Sierra 1500 yourself? What have you tried so far?

I changed spark plugs thinking it may have been a misfire and problem is still there

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Truck is making a small whining noise coming from close to the transmission only during idle

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Answered in 7 minutes by:
1/18/2018
tech0405
tech0405, Technician
Category: Car
Satisfied Customers: 11,156
Experience: Certified technican 14 years experience
Verified
Good morning have you checked fuel pressure yet ?
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Customer reply replied 6 months ago
I have not checked it yet
Customer reply replied 6 months ago
I have a pressure gauge but it is at a friends house up the road, not sure how this website works do I only get to connect with you once for 26$
Ok since you have no codes the most common issue to cause this on the model is a fuel pump in the fuel tank that is starting to fail you can see if the fuel pressure is dropping with a fuel pressure gauge installed into the fuel system to see if it drops . The pump is a very common issue on this model . I hope this helps please don’t forget to provide provide feedback for the help provided thank you
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Customer reply replied 6 months ago
What should my fuel pressure be on this model
You should have near 50 psi please don’t forget the feedback thank you
tech0405
tech0405, Technician
Category: Car
Satisfied Customers: 11,156
Experience: Certified technican 14 years experience
Verified
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