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How to: Seat Back / Lumbar Repair

23164 Views 6 Replies 5 Participants Last post by  nglauer
The community here at urges you to please use caution and seek professional assistance when performing modifications to your vehicle. Before attempting any modification it is advised that you refer to your Colorado or Canyon service manual or contact a certified mechanic as not all GMT355 trucks are the same. The staff and the associated members are in no way responsible for any damages, injuries or other harm inflicted to your vehicle or yourself which may result in attempting these modifications. The posts and content presented on this site reflect in no way the views of or it’s ownership.

A 355nation How To presented by

Project Name
Seat Back / Lumbar Repair

Project Description
How to remove and repair your seat back and lumbar support

Skill Level
Easy if you weld, Moderate if you don't

Project Vehicle
Make: GMC
Model: Canyon Crew 4x4
Year: 2007
Engine: 3.7L
Power windows: YES
Sun Roof: NO

Tools Needed
Socket Set, Welder, Contact Adhesive, Electrical Tape, Light (factory dome light sucks), and Patience

Project Time
1 hour or less

Project Cost
Free if you have a welder and know how to use it

I have attached a series of photos with step by step instructions to help you remove, repair, and re-install your seat back. This is a fairly quick and easy fix, that makes a huge difference in the comfort of your drivers seat. I completed my project from start to finish, including all pictures and welding withing 45 minutes or less.

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1 - 7 of 7 Posts
need to replace my knob for the lumbar.... bad design for it
great write up! i never had the lumbar fail but the sides of the seats just provide no support so i got rid of the stock buckets.
Thanks to nglauer and the mts crew for making this happen. Special recognition to Rshadd for Reformatting.
great write up! i never had the lumbar fail but the sides of the seats just provide no support so i got rid of the stock buckets.
I agree, these seats don't provide much support. I did notice I have much more lumbar support now (obviously since it was broken). I wish they had larger bolsters as well. My goal is to eventually swap the seats out for something more comfortable and have the rear bench upholstered to match.

Thank you again for the replies, I'm slow at following up :)

Thank you MTS Crew, Rshadd, and Captainrab for helping get my how to up. I hope this helps someone, or inspires them to buy more comfortable seats when they see my how to lol. My seat is continuing to hold up, and i've already put an additional 25,000 miles of seat time on it since repairing it. I spend a lot of time on the road in my Canyon... so having the lumbar support fixed has helped me quit a bit.

Thanks again!

1 - 7 of 7 Posts
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