Thank you deank! Here is another heads up for M1009 drivers. While remaking my seatbelts, I found an issue. The white latch buttons on the side door jams are suppose to deactivate the latching mechanism of the shoulder belt when the door is opened. This serves two purposes. 1 to retract the seatbelt so rear passengers can enter and exit the vehicle unimpeded. 2 so you don't go down the road dragging you seatbelt if you forget to put it on. The issue I believe I found is that this latching mechanism is made from a soft nylon material (both good and bad) more on that in a moment. The soft nature of the latch button allows it to slide off the flat of the door and over time take a noticeable set. It then wears at that angle.
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This then allows the latching mechanism to stay unlocked and in the retracted position, not sure if this locks out the inertia dongal or not. Should know more on that when I dig in deeper. From what I understand this is only used on the Blazer body style. No suburban or trucks have them from what I've read and only there to access the rear seating. This part is not available to purchase, I guess they don't want people digging into the seatbelt mechanism. On my 1009 only the drivers door was in complete failure mode. Passengers door was rough but functional. My work around was to drill out some 3/8 aluminum rod to the proper depth using a 5/16 bit to allow for the 1/4" diameter spring. I then cut it to the proper length. I used the old latch trigger as a sleeve over the rod I made.
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With some creative drilling 3/8 bit and sandpaper rolled and chucked up in the drill the soft nylon hollow center can be enlarged and used as a tight fitting sleeve over the aluminum rod. I'm really happy with the finished product and have complete confidence it will perform better than oem without deformation. Some finish sanding on the outside surface of the sleeve has it running smoothly through the housing tube. Any comments or insights would be welcome as this is a lifesaving device.
Thank you,
James