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Chris (aka-Moose)
Chris (aka-Moose), GMC Technician
Category: GMC
Satisfied Customers: 47969
Experience:  16 years of experience
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I have a 2008 GMC Sierra LT with electric seats and a 4 way

Customer Question

I have a 2008 GMC Sierra LT with electric seats and a 4 way lumbar support. My lumbar on the in and out is not working,
Submitted: 1 year ago.
Category: GMC
Expert:  Chris (aka-Moose) replied 1 year ago.

Welcome I'm Chris aka Moose

What size Sierra is this vehicle?

-----------About me and Just Answer------------

I am in my upper 30's, have a wife and 2 sons. I farm, fish, hunt, build, and coach youth soccer. I work on anything with an engine, been to many schools and classes through my 12 years with the dealership to get trained and certified. I try the best I can to share what I know and or have access to with my customers. Please consider I base my questions and answers to you, solely on the information you give me since I am not there to see, smell, hear, touch, or test. I try my best to be here everyday starting at 3pm central. Rating an answer is required. Please let me know if your not pleased prior to rating or if you cannot rate me so I can try to help a different way. God Bless and have a great day.

Thanks Chris

Customer: replied 1 year ago.
It is a 1500 4 door crew cab SLT, I have been told by a GM dealer that I need part# ***** as it is not functioning properly,
I need to know where that part is and how to get there, I looked at the back of the seat and am not sure how to take the back cover off.Brent
Customer: replied 1 year ago.
It is a 1500 1/2 ton, 4 door crew cab SLT, I have been told by a GM dealer that I need part #20763139 as my driver seat lumbar is not functioning properly. I need to know where that part is in the seat and how to get there. I looked at at the back of the seat and not sure how to take the back cover off.Brent
Expert:  Chris (aka-Moose) replied 1 year ago.

In the link below, part 9 is what they are saying needs replaced based on there diag.

http://www.wholesalegmpartsonline.com/showAssembly.aspx?ukey_assembly=373193

To replace that part use the steps below.

https://dl.dropboxusercontent.com/u/90220402/GMCseat1.pdf

https://dl.dropboxusercontent.com/u/90220402/GMCseat2.pdf

https://dl.dropboxusercontent.com/u/90220402/GMCseat3.pdf

https://dl.dropboxusercontent.com/u/90220402/GMCseat4.pdf

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