How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Dan Your Own Question
Dan
Dan, ASE Certified Technician
Category: GMC
Satisfied Customers: 1650
Experience:  Auto Technician
94707146
Type Your GMC Question Here...
Dan is online now
A new question is answered every 9 seconds

I have a 2011 GMC 3500HD with the LML Duramax. I replaced

Customer Question

I have a 2011 GMC 3500HD with the LML Duramax. I replaced the air filter and cleaned the MAF sensor with appropriate cleaner. I am now getting a P16A1 code and the engine sputters and falls on it's face periodically.
JA: Does the engine stall right after starting? And what about hesitation or jerking during acceleration?
Customer: It starts and idles just fine. It randomly stalls under power.
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: I am. I disassembled and inspected all of the components and reassembled them to ensure that there were no air leaks.
JA: Anything else you want the mechanic to know before I connect you?
Customer: I don't believe so.
Submitted: 9 months ago.
Category: GMC
Expert:  Dan replied 9 months ago.

Hello my name is***** am an ASE Master Technician and I am glad to help you out with your question.

Expert:  Dan replied 9 months ago.

I have seen problems with the throttle body causing this problem.

Expert:  Dan replied 9 months ago.

It could also be a problem with the ecm.

Expert:  Dan replied 9 months ago.

Do you have a multi meter?

Expert:  Dan replied 9 months ago.

Do you need the repair steps and wiring diagram from the factory service manual?

Customer: replied 9 months ago.
I do have a Mulino meter.
Expert:  Dan replied 9 months ago.

ok

Expert:  Dan replied 9 months ago.

Do you still need help?

Expert:  Dan replied 9 months ago.

Hello again Dan here,

I am contacting you because the post has not been closed or rated.

This question is coming up on 7 days which means it will time out and close.

You have already paid to get this question answered, but you have not rated.

Let me help some more. Is there anything else I can help you with?

If I did not give you 5 star service, please let me know what I missed.

I do not get compensated for my time and resources unless you rate me.

Thanks