Solid Brass Gear Set for 2007-2014 GM Power Seat Height Adjustment Repair

3D CAD rendering of a GM power seat motor worm gear and drive gear assembly for seat height and tilt adjustment.

Angled view of the bronze replacement gears for a GM power seat motor, used to fix common plastic gear failures.

GM Power Seat Height Repair Kit (2007-2014) - Solid Brass Gear Set

$49.99

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Description

GM Power Seat Height Adjustment Gear Kit (Solid Brass)

Stop replacing entire seat tracks for one broken plastic gear. In 2007–2014 GM vehicles, the power seat height adjustment relies on a fragile plastic gear set that eventually strips or chips under the weight of the occupant.

When these gears fail, dealerships will only sell you a complete seat track assembly ($600–$900+). GruvenParts.com offers a Solid Brass permanent fix that replaces both failure points in the mechanism for a fraction of the cost.

The Engineering Gap: OEM Plastic vs. GruvenParts Brass

Feature	OEM Factory Part	GruvenParts Solution
Material	Molded plastic (Spur & Worm gears).	Solid Brass (Helical-cut).
Durability	Prone to stripping, chipping, and total failure.	Industrial strength; will not strip or break.
Repair Scope	Replace the entire seat track unit.	Targeted repair of the internal gears only.
Value	$600+ plus high labor costs.	Affordable DIY kit with a Lifetime Warranty.

What’s Included in the Kit?

Unlike incomplete kits on the market, we provide a matched set to ensure a "bulletproof" repair. Replacing only one gear often leads to the new metal gear chewing through the remaining old plastic gear.

(1) Helical Cut Solid Brass Main Spur Gear
(1) Solid Brass Mating Worm Drive Gear
Note: One kit repairs ONE (1) height adjuster. Each seat typically has two adjusters (Front Height and Rear Height).

Application & Fitment

This kit fits 2007–2014 GM Vehicles equipped with power seats, including:

Chevy: Silverado, Tahoe, Suburban, Avalanche.
GMC: Sierra, Yukon, Denali.
Cadillac: Escalade, DTS.

Compatible Seat Track Part Numbers: 22804417, 22804418, 22804419, 22804420, 20779109, 20779110 (and more).

Installation Support

This is a DIY-friendly repair that requires basic tools (Dremel, 1/4" socket) and a high-strength 24-hour epoxy (such as JB Weld 8265S).

Watch the Installation Video

Installation Snapshot:

Remove Seat: Gain access to the bottom seat structure.
Open Drive Box: Remove the four screws to access the gears.
Remove Old Plastic: Use a Dremel to carefully cut away the failed plastic spur gear.
Bond New Gear: Apply 24-hour epoxy to the shaft and thread on the new Brass Spur gear.
Replace Worm Gear: Swap the plastic worm gear with the new Brass version.

Cure & Reinstall: Allow epoxy to fully cure before testing seat movement.

70 Reviews

5
Worked as promised

Posted by Unknown on 12th Jul 2022

Wife could not drive my Denali for years - one Saturday afternoon and we are back in business. Hassle to get seats out but much cheaper than new seat bottoms from the dealer. Would highly recommend.
5
Siilverado Seat Gear

Posted by Unknown on 7th Jun 2022

Solid brass construction. Well machined items. Purchased to replace broken OEM plastic seat recline gears.
5
it works

Posted by Al on 6th May 2022

Arrived quickly. Follow video instructions. Recommend dry fitting first. I had to lightly file the shaft to get the gear to slide on. Recommend measuring gap during dry fit, then marking the farthest point behind the gear to make sure it does not inadvertently move after applying JB Weld. Seat moves like new now. Also, recommend replacing seat cushion foam at this time, since the gear replacement puts you halfway there.
5
it works

Posted by Al on 6th May 2022

Arrived quickly. Follow video instructions. Recommend dry fitting first. I had to lightly file the shaft to get the gear to slide on. Recommend measuring gap during dry fit, then marking the farthest point behind the gear to make sure it does not inadvertently move after applying JB Weld. Seat moves like new now. Also, recommend replacing seat cushion foam at this time, since the gear replacement puts you halfway there.
5
Nice

Posted by Unknown on 18th Apr 2022

Works Great
4
Got seat working

Posted by Bryan G on 20th Feb 2022

My application was 08 suburban driver seat with electric forward/ backward and two up/down adjustment motors. My front up/down adjustment gearset broken which is actually the middle motor of the three. Two brass gears come in the kit. My seat had one steel worm gear that I reused and one broken plastic wheel (driven) gear that I replaced with one out of the kit. The brass worm gear in the kit may be needed in a different application, but in my case the factory worm gear was a better fit in the plastic gear cover housing assembly. There are videos of how to remove old gear with a dremel on youtube. Once removed I used a file to slightly reduce shaft dia. So that the new gear would fit up over shaft. Clean well. I used carb cleaner. Roughed up inside surface of gear then jb weld. Gravity was not a friend so prop it to keep gear stationary for 24 hours while hardening. I left aprox 1/32 inch shaft sticking out beyond gear..the ball bearing in end of shaft rides on metal disc. Watch this small thrust disc part may fall out upon disassembly. Needed for proper gear lash. Clean old grease and broken plastic chips out of gear housing halfs. I used silicon grease packets for brake caliper pins from orileys as lubricant on reassembly. Tested seat with 12 volt supply. All working now. Time to re install seat.
5
Great after market solution

Posted by Alexis Adrian Vargas on 11th Nov 2021

This is an affordable, easy fix that is durable and made with precision. Thanks again!
5
Best part

Posted by Robert on 3rd Nov 2021

This part was right to spec. For me, this was fantastic thank you again for making this part and all the other specialty parts.
5
Sturdy Product

Posted by Bennett Scott Clifton on 7th Oct 2021

Like the product very much, a lot more robust than cheap plastic factory part. Installation guide very informative and helpful. Does take some time to do the repair but well worth it. A lot cheaper than trying to locate a replacement adjuster and hope that it is not stripped as well. Would recommend!