Power seat on drivers does not adjust

2007 CADILLAC DEVILLE DTS
97,000 MILES • 4.7L • V8 • 2WD • AUTOMATIC
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FLORIDA SHADETREE
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The drivers side seat moves back and forth, it reclines well, but it does not raise up and down. You can hear the motor come on when the switch is pushed, but the seat will not raise and is in the lowest position. It is my wife's daily driver, so it is a big deal. Any insight would be greatly appreciated.
Feb 15, 2018 at 12:34 PM
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STEVE W.
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If you can hear the motor but no seat motion it is either the plastic drive gear in the gearbox on the motor or the lever assembly on the seat frame, the most common failure is the gear. It is all part of the seat module assembly. To replace it you disable the airbag system by pulling the fuse for the SIR system. Then you disconnect and remove the front seat. Remove the seat cushion by freeing the retainers. Next you unbolt the seat frame from the power module. Reverse the process to install the new one.

You might want to look into a salvage yard part first. I have not replaced one on a DTS but one for a CTS was over $400.00 and that was a discounted price. I do not know of anyone other than used or dealer for the part.

Seat Adjuster - GM (25869500) DTS W 8 way power. $505.99, but it is listed as discontinued by GM. I would still try the dealer first.

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Feb 16, 2018 at 8:43 PM
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FLORIDA SHADETREE
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Perfect reply. I would have never thought to disable the air bag. I will tackle this next week. Thanks Steve.
Feb 22, 2018 at 3:55 PM
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STEVE W.
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Let us know what happens. If you cannot get a realer part I would try online but verify the current part number from the dealer. GM loves to change part numbers if anything changes or they use a different supplier.
Feb 23, 2018 at 4:28 PM