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· Registered
2009 Silverado Crew Cab
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47 Posts
Discussion Starter · #1 ·
2009 Silverado Crew Cab 2wd with 5.3 and 6L80 trans. 208K miles.

Well, my birthday was this weekend. SO took a trip to the casino. 120 miles from home. Truck ran fine all the way there until the last mile. Getting off interstate. Traction control light and check engine lights come on. Truck start badly miss firing and barely running. Basically goes into limp mode. So I limped it into the parking garage and shut it down. Buddy I was meeting had a code reader. Showing code PO307, cylinder 7 misfire. Plug wire sparked fine. So we went to the parts store and get a new coil pack and spark plug and some tools. Climbed into the engine bay to reach it, and changed the cylinder 7 coil pack and spark plug. Still throwing the same code and barely running. Also ticking big time. I'm afraid its not going to be good news at all. Having it towed to a dealership near home today for almost 600 bux out of pocket. Dealership will run a full diagnostic tomorrow and let me know what I'm getting myself into. I don't mind spending little bit of money to get it running. But I'm afraid its going to be a big issue since we already tried fixing the easy stuff. Any thoughts to ease my mind on it maybe being something non major?

Side note. I was planning on upgrading this truck this year and was trying to do so while it still had a little value to it to help me with a little bit of a down payment. Theres a number in my head already regarding what I'm willing to spend on this to get it running again. If repair cost exceeds that, most likely going to just upgrade now. Problem is I will have lost all my trade/resale value that I was going to use for a down payment. Sucks either way and happy birthday to me.

Also got my butt handed to me at the casino, just because thats how my weekend went.
 

· Administrator, TOTM, How-To Author
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9,594 Posts
If you had good spark, why did you change the coil? Most likely, it's a collapsed AFM lifter. Could require replacing the cam, too. A dealer is going to be WAY more expensive than a good, local, independent shop. Let us know the diagnosis.
 

· Registered
2009 Silverado Crew Cab
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47 Posts
Discussion Starter · #4 ·
If you had good spark, why did you change the coil? Most likely, it's a collapsed AFM lifter. Could require replacing the cam, too. A dealer is going to be WAY more expensive than a good, local, independent shop. Let us know the diagnosis.
Because I am not super mechanically inclined. We basically googled that code and the spark plug, wire and coil pack were three of the first things that popped up about it. I was in a parking garage 100 miles from home so there was only so much I could do. Those were just the first things I tried kinda of hoping for the best. I have 4 small kids and work alot of hours, so I dont do my own mechnical stuff on my truck, I just take it somewhere. I chose that dealership because the truck had a little work done there before and it is very close to my office. I dont know that I am going to let them complete whatever work it may need. But I do know I wont save a ton of money at a small independent shop just on an up front diagnostic. That will still run me $100-150 anywhere around here.
 

· Registered
2009 Silverado Crew Cab
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47 Posts
Discussion Starter · #5 ·
Definitely lifter failure.
That is unfortunately what I am thinking as well. Truth be told, I bought this truck 11 years ago and up until a couple years ago when I joined this forum, I didn't even know what AFM was or that is was that big of an issue. Otherwise, I would have gotten a range disable for it a whole bunch of miles ago. Once I get a full diagnostic, I will figure out what to do with this thing.

Thanks for the responses guys.
 

· How-To Author
2009 5.3l 6l80
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6,017 Posts
let dealer tell you for sure but depending on the shops near you go ahead and figure 2-4k for AFM repair from an indepent place or if dealer does it they will want to do complete engine so 7-9k probably.

all you had to do was hit the jackpot, try again lol
 

· Registered
2009 Silverado Crew Cab
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47 Posts
Discussion Starter · #7 ·
let dealer tell you for sure but depending on the shops near you go ahead and figure 2-4k for AFM repair from an indepent place or if dealer does it they will want to do complete engine so 7-9k probably.

all you had to do was hit the jackpot, try again lol
Yea, lol, thanks Bradley. Tow truck driver finally made it there, so at least the truck is back in town now and I'm hoping they will be able to get to it tomorrow. Need to run up there soon anyway to get some stuff out of it that I forgot to grab, so I'll just keep pestering them about it. I'll let you guys know what the diag says. I'm pretty much planning for the worst but hoping for the best now. If it is indeed lifter failure, then I seriously doubt that I'm going to sink that kind of money back into it at this point.
 

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2009 Silverado Crew Cab
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47 Posts
Discussion Starter · #8 ·
Welp.... day 3 at the dealership. They still haven't gotten it in for a diagnostic. Very frustrating. Messed up by taking it there to begin with. I have already made my mind up that I am not going to keep this truck. It its a lifter failure, then I would probably sell it as is for cheap. If its an easier/cheaper fix, then I will fix it to get it back running and sell it for $6-7k if I'm lucky. It has no trade value with over 200k miles, even if running good, as any reputable dealer near me wouldn't put it on their lot, they would take it straight to the auction. So trade in value would be auction wholesale of probably $3500 if I'm lucky. Honestly at this point, I'm not even sure why I am still waiting to go get something else. Guess I am still hopeful that its worth fixing, just so I can put it up for sale and get a little cash out of it. Even though 3 different mechanics plus you guys and others I know have all told me its a lifter failure and will need a rebuilt or replacement engine. I am excited to get something new, just not excited to have a payment again.
 

· 1st Responder
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1,562 Posts
Yeah that’s sad hopefully it’s not AFM but not likely and never throw a parts canon by the way curious I’m assuming the plug and pack were not oem never use non oem on these trucks for some reason they will throw a temper tantrum 😂
 

· How-To Author
2009 5.3l 6l80
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6,017 Posts
Unfortunately I dont think you are far off on your prices, at peak I think I couldve sold mine for 10k just because its rust free but not yeah 7-8 and I am right behind you on mileage.

Surely there are used car lots that would do a little better around you than the dealers?
 

· SilveradoSierra Guru
1999 Silverado LT LQ4 2006 Sierra SLT LBZ
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4,539 Posts
Take it to wholesale. By the time you fix it you'll be in for $3-4k+ unless you are doing the work. Not even worth it.
 

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2009 Silverado Crew Cab
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47 Posts
Discussion Starter · #14 ·
Thanks for the reply. But the one you linked is 4wd, mine is only 2wd. Kbb has my private party value right at $7,500 and from what I have seen around my area, that seems about right. The other problem is finding a dealer I can trust. I will be asking around town, becuase I don't know any.
 

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2009 Silverado Crew Cab
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47 Posts
Discussion Starter · #15 ·
Okay so, busy weekend but I now have an update as they finally completed the diagnostic Saturday afternoon. Good news and bad news.

Bad news is that you were all correct and it is indeed a lifter failure. Dealership has it quoted at $9k for a factory reman motor install or $4800 to rebuild the current motor (with the knowledge that it could be worse once they get in it). I doubt I would let them do the work as I would rather find a smaller independent shop with a good reputation. So now, I will have it towed to my office and it will sit out in the yard until I figure out what to do with it. I have talked to 2 small independent shops as well as a retired GM mechanic and none of them are interested in rebuilding it anyway. May ask my dad who he had rebuild the 4.3L in his 87 square body years ago. I do have a couple people interested in the truck "as is" for cheap and they would try and rebuild it themselves. I don't know what the truck is worth in its current non running condition. Maybe $1500-$2k? If you think I am way off, please let me know. I dont think its worth it to put about $4K in it to get it running just to try and sell it myself for around $7500 (kbb value). I welcome everyones two cents about what they would do with it.

Now for the good news. I work for a very small engineering firm and have been with my employer for 17 years now. He basically hired me right out of high school because I knew Autocad and was interested in Engineering. My boss is aware of my situation and already knew I was going to try and upgrade my ride as soon as the high ass markups started cooling off. He is going to start giving me a monthly truck allowance to get some new wheels, so basically company is paying for it. His way of showing his appreciation for my hard work and loyalty. Just so happens there is a small reputable used car dealer 5 mins from our office. We have been their go to engineer for the last 20 years everytime they do a parking lot expansion or garage add on, etc. My boss has also been buying vehicles from him forever and they go way back. They actually have a truck on their lot right now that fits all my needs and 95% of my wants. They are giving me the family and friends discount just like my boss would get on it. So, I will be picking that up very soon. I will start a new thread on the new ride instead of keeping it on this one.
 

· SilveradoSierra Guru
1999 Silverado LT LQ4 2006 Sierra SLT LBZ
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4,539 Posts
I would see if I could get $4k for a private sale. If not then trade it in and hope for the best at auction.

You have something that basically nobody is going to want. It is one of those things where you are looking for the 1% mechanic special to actually work on the truck.
 

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2009 Silverado Crew Cab
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Discussion Starter · #17 ·
So it looks like my dad is going to entertain fixing this truck. His old mechanic friend that did all the work on his square body is willing to work on this 09. I think dad is just going to see if he can find a junkyard motor with less miles and have the mechanic put it in. Maybe even have him get rid of AFM on it depending on where he is with costs. At a minimum he could just get a range device. I'm interested to see what he comes up with.
 
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