P0449 and P0455

[Bob the Noob]

Bob, I have a feeling mine is the same way. I am ordering a cap, but a new valve might be in order. Which p/n did you go with? I'll have to check mine.

Fun times.

ACDelco 214-2164... which Amazon, if you have it set up with various cars, will say won't fit your G8 because it's not the entire assembly. I found the full assembly and it said that would fit, but I didn't need the canister so I didn't pay the 140 for it and ordered the $13 valve.

[Napalm]

ACDelco 214-2164... which Amazon, if you have it set up with various cars, will say won't fit your G8 because it's not the entire assembly. I found the full assembly and it said that would fit, but I didn't need the canister so I didn't pay the 140 for it and ordered the $13 valve.

that's beautiful - unless your canister has a crack - but you know they make epoxy for such issues.

[J Wikoff]

I finally got back in yesterday and got it all fixed. I dropped the cradle by removing all 4 bolts and the rear exhaust hangers. I did struggle for a few minutes trying to remove the outboard line from the valve. Then I remembered I had a set of those cheap fuel line disconnect collar tools. Dug those out and had the line off almost immediately. To those planning this job, get a set. You'll be happy you did. After installing the new valve, I cleared the codes to confirm that it did indeed fix the problem. Then I put in a set of BMR cradle bushing inserts and put the rest back together.

I did smoke my torque wrench on the third cradle bolt though. It seemed a lot harder to get the wrench to click on that bolt, then, I ran out of oomph on the fourth bolt and couldn't get it to click. It was then that it dawned on me that something wasn't right. I tried resetting the torque wrench but when I got it back to 0 ft-lbs, the handle just kept twisting. So I backed those two bolts off a bit. I ordered a new wrench and two new bolts, because I'm sure I stretched them too much. I'll try to get those in next weekend.

https://www.amazon.com/Performance-T...isconnect+tool

Here's the set of fuel line disconnect tools I have. They might not last forever, but this is the second time I've found myself wanting them in the last decade, so they work fine.

[Napalm]

don't worry about those bolts and if they aren't loose don't remove them. you didn't stretch them at all.

and I know, I know the whole but TTY . . . . . .

they are not torqued to yeild - or even near yield. for the size, material, and quality of the thread. sorry but they aren't. the whole set torque and angle spec is because the factory bolts have locktitie on them - it thus throws off a convential measured torque reading as it adds so much drag to the bolt threads. Just like how oiled bolts don't torque correctly either as they slip to easily.

so I suspect unless you cranked down on them with all your might - and I don't know if you are a power lifter using a 3 foot wrench - but I would say otherwise the bolts are just fine and I would leave them alone.

[J Wikoff]

Well... Want a pair of brand new bolts then? Lol.

I do lift, but my torque wrench is only 18".