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I have a 2010 Chevy Tahoe LTZ with 85,000 miles. My check…

I have a 2010...

I have a 2010 Chevy Tahoe LTZ with 85,000 miles. My check engine light keeps coming on. I have taken it to the repair shop three times already. They have removed and replaced the Mass Air flow sensor three different times. The engine light goes out, then after driving it for a little bit it comes back on.

Mechanic's Assistant: Does the light stay on, or does it blink?

It stays on.

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

I'm not an expert in that field. I have been taking it to a repair shop. They are having a difficult time figuring it out.

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

No, that was it.

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Answered in 4 minutes by:
3/21/2018
david craig
david craig, Auto Mechanic
Category: Chevy
Satisfied Customers: 5,763
Experience: owner/mechanic at 3D Automotive
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Hi my name is ***** ***** I'll be more than happy to assist you. Please allow me a few minutes to review your information. Thank you

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what fault code are they getting?

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Customer reply replied 3 months ago
P3400

standby

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is this a 6.0 hybrid?

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Customer reply replied 3 months ago
No

ok.what size engine then?

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Customer reply replied 3 months ago
5.3L V8

if they have replaced the MAF 3 times for this code that has NOTHING to do with the MAF do not take it back to that shop.

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it is a cylinder deactivation fault code.

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P3400

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Customer reply replied 3 months ago
I need to have another mechanic run that test?

absolutely. whoever is troubleshooting this for you does not know what hes doing

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Customer reply replied 3 months ago
Thank you.

you are very welcome and Please note that customer satisfaction is my number one goal and rating this chat session 3 or more stars will be greatly appreciated and will allow any follow-up questions you may have. we can chat back and forth many times until your issue is taken care of.
Thank you for rating my assistance and for using Just Answer.

david craig
david craig, Auto Mechanic
Category: Chevy
Satisfied Customers: 5,763
Experience: owner/mechanic at 3D Automotive
Verified
david craig and 87 other Chevy Specialists are ready to help you
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Customer reply replied 3 months ago
Thank you again.

you bet. thank you. keep me updated

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Customer reply replied 3 months ago
I will.

thanks

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Customer reply replied 3 months ago
One other thing, they did replace the Manifold Absolute pressure/Barometric pressure circuit after the code P0106 came up. That was on the last visit.

ok, P0106 is a MAP sensor fault so that should have taken care of it. so is P3400 the only code remaining?

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Customer reply replied 3 months ago
I believe so, but after picking it from the shop, about an hour later the check engine light came on. On the paper work it listed the code P3400, but they couldn't identify what that code means.

just print out the diagnostics I sent and show them what it means. I would take it elsewhere if they dont have the capability of finding out what that code means

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Customer reply replied 3 months ago
Okay, I will. Thanks again.

you bet

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