Hi All. I'm a newb! I just bought a new to me 2009 Cayenne GTS black on black w/6 speed manual. It's a really nice SUV, pleasure to drive from gas pump to gas pump
So, I need to replace the fuel pump and while I'm at it I'm changing out the fuel filter as well.
All of the bolts came out just fine. Except one of course. One of the upper rear seat bracket bolts on the floor is absolutely jammed. I ahve the correct bit and all but even with a snipe it's in there like poop on a blanket. Before I strip the torx head to smitherines anybody have any suggestions? I understand there is blue Loctite on the bolt so likely why it's so tight.

Sincerly appreciate any guidance

 

Welcome to 6Speed! I do all my own work and I have never had a Torx screw/bolt cam-out (strip). They are specifically designed to prevent exactly this with the multiple points of contact between the tool and the screw/bolt. I wish domestic manufacturers would use bolts that resisted cam-out as well.

With that said, with the improper technique, I suppose you can cam-out anything. Just make sure you push in firmly while trying to remove. Here are my tips in order:

1) Use literal amount of penetrating oil and let soak in. My preference is PB Blaster for the easy availability and cost.

2) Use an impact driver. Either manual impact driver, electric impact driver w/ socket adapter, or air impact gun.

3) Try to use a heat gun and apply to the bolt to create expansion in the dissimilar metal alloys and unfreeze any seized bolt.

 

Those should be triple-square bolts, right? It's the blue loc-tite that makes those seat bolts difficult. Be sure the socket is firmly planted in the bolt head (for one of them, I like to use an extension that goes between the seat backs), and don't be afraid to use a ½" drive ratchet. If you're socket is in crooked or too shallow, they will round out (especially if you use an impact gun).

 

Thanks R-Man and XR4Tim. I utilized all of the suggestions and it turned out that the bolt was cross-threaded from the factory. I tried everything and finally did strip the socket of the bolt so had to drill it out. Not a big deal but was frustrating. I went to the stealership and bought a new bolt and the parts guy told me that they had a GTS in the other day for fuel pumps and they also had a cross-threaded bolt. He is bringing this to the attention of the regional manager for Porsche / VAG.