7
- My Forums
- Tiger Rant
- LSU Recruiting
- SEC Rant
- Saints Talk
- Pelicans Talk
- More Sports Board
- Coaching Changes
- Fantasy Sports
- Golf Board
- Soccer Board
- O-T Lounge
- Tech Board
- Home/Garden Board
- Outdoor Board
- Health/Fitness Board
- Movie/TV Board
- Book Board
- Music Board
- Political Talk
- Money Talk
- Fark Board
- Gaming Board
- Travel Board
- Food/Drink Board
- Ticket Exchange
- TD Help Board
Customize My Forums- View All Forums
- Show Left Links
- Topic Sort Options
- Trending Topics
- Recent Topics
- Active Topics
Started By
Message
Calling all gear heads- help diagnose my truck
Posted on 11/1/26 at 8:54 pm
Posted on 11/1/26 at 8:54 pm
Well for those of you who remember, I have already done a lot of work to my 2016 Sierra Z71. It has been paid off though so have been crossing fingers and limping it along.
Had the transmission rebuilt and the top end done with an AFM delete somewhere between 75-100K miles. Just rolled 170K miles and the torque converter is shuttering pretty good. Or I am pretty sure it is the torque converter. Most noticeable when lightly accelerating, if I get on it I can't notice it as bad.
Did did replace the tran fluid and added two tubes of shutter stop but didn't help much.
I have been contemplating getting the tune checked as it has never ran as it should after the stuck lifter. When I did the AFM delete I had them go slightly bigger on the cam and installed a cold air intake I had in the box for awhile.
Can the tune possibly help or get rid of the shutter issue or am I looking at dropping the transmission no matter what?
I am done putting $ into the truck so if I have to get the transmission done I assume just bite the bullet and finally get a new truck.
TIA
Bonus question - the only 1/2 ton I am interested in is a F150 with the 5.0 crew cab with 6.5ft bed.
Being that you can get comparable trims in 3/4 ton gas for the same price should I look at getting a 3/4 ton gasser?
Had the transmission rebuilt and the top end done with an AFM delete somewhere between 75-100K miles. Just rolled 170K miles and the torque converter is shuttering pretty good. Or I am pretty sure it is the torque converter. Most noticeable when lightly accelerating, if I get on it I can't notice it as bad.
Did did replace the tran fluid and added two tubes of shutter stop but didn't help much.
I have been contemplating getting the tune checked as it has never ran as it should after the stuck lifter. When I did the AFM delete I had them go slightly bigger on the cam and installed a cold air intake I had in the box for awhile.
Can the tune possibly help or get rid of the shutter issue or am I looking at dropping the transmission no matter what?
I am done putting $ into the truck so if I have to get the transmission done I assume just bite the bullet and finally get a new truck.
TIA
Bonus question - the only 1/2 ton I am interested in is a F150 with the 5.0 crew cab with 6.5ft bed.
Being that you can get comparable trims in 3/4 ton gas for the same price should I look at getting a 3/4 ton gasser?
This post was edited on 11/1/26 at 9:37 pm
Posted on 11/1/26 at 9:21 pm to GREENHEAD22
You still have afm lifters in it???
ETA: If the rebuild was done with OEM parts, the OEM is trash AFM lifters. You can delete the function all you want. The parts are still poodee
ETA2: all the delete does is buy time honestly. After the third top end job, I told them keep it and order me a new one.
ETA: If the rebuild was done with OEM parts, the OEM is trash AFM lifters. You can delete the function all you want. The parts are still poodee
ETA2: all the delete does is buy time honestly. After the third top end job, I told them keep it and order me a new one.
This post was edited on 11/1/26 at 9:25 pm
Posted on 11/1/26 at 9:24 pm to Big_country346
AFM delete is a rebuild with out the AFM lifters, all that was removed.
Posted on 11/1/26 at 9:27 pm to GREENHEAD22
Gotcha. I got tired of fricking with them. It was all warranty work from MB, so I never did a delete. Just curious.
The torque converter is the first place everyone went before they opened the head. Almost like they knew it was coming. I don’t know anything about programs though
The torque converter is the first place everyone went before they opened the head. Almost like they knew it was coming. I don’t know anything about programs though
Posted on 11/2/26 at 12:00 am to GREENHEAD22
Add one or two bottles of Ford xl3 to the transmission. Ive had all the fluid changes, wiring harness and updates done by the stealership shudder kept coming back. A mechanic i was doing some work for told me about for under $20 didn't think it would work but It did on my 2015 gmc with 6.2
Posted on 11/2/26 at 8:05 am to GREENHEAD22
Have you checked to see if its currently throwing any codes?
A buddy at work was in the almost exact same situation, on about the exact same truck, and he's a bug chevy gea head who ones a bunch on his drag car and hit rods. Actually pulled the torque converter thinking that wad the issue, and it eneded up being a coil pack with just a very slight miss fire under acceleration that was what he was thinking wad the shudder all along. Would at least be worth ruling out.
A buddy at work was in the almost exact same situation, on about the exact same truck, and he's a bug chevy gea head who ones a bunch on his drag car and hit rods. Actually pulled the torque converter thinking that wad the issue, and it eneded up being a coil pack with just a very slight miss fire under acceleration that was what he was thinking wad the shudder all along. Would at least be worth ruling out.
Posted on 11/2/26 at 8:21 am to GREENHEAD22
If you already had the delete done I would take it to a transmission shop and see what they say. Will be much cheaper then something new and maybe more reliable. But sometimes you just want something new.
Posted on 11/2/26 at 9:27 am to CaptJJ
We checked when changing the tran fluid and no codes. Also pulled a spark plug and it looked good.
However right after that on the trip up to the hunting property it do throw a misfire code. First time I have seen that and happened when hitting a big bump on the MS bridge. Hasn't happened since.
I may have to go and pull them all and the coil packs. Thanks.
However right after that on the trip up to the hunting property it do throw a misfire code. First time I have seen that and happened when hitting a big bump on the MS bridge. Hasn't happened since.
I may have to go and pull them all and the coil packs. Thanks.
Posted on 11/2/26 at 9:37 am to GREENHEAD22
Sorry for the typos, using my phone with a busted screen I can hardly see. Good luck.
Posted on 11/2/26 at 9:38 am to LEASTBAY
Yea but I would assume they will tell me they wilo gave to drop it before knowing anything for sure. So looking at 1K just to know something.
And yes, I have been wanting something new for awhile.
My cheap self though just can't stand these new truck prices.
And yes, I have been wanting something new for awhile.
My cheap self though just can't stand these new truck prices. This post was edited on 11/2/26 at 9:39 am
Posted on 11/2/26 at 10:21 am to GREENHEAD22
I'm interested to see the new GM motors. I have the 5.3 luckily. It's been good so for besides a hole in the exhaust manifold.
This post was edited on 11/2/26 at 10:22 am
Posted on 11/2/26 at 4:39 pm to GREENHEAD22
Change the fluid again. Multiple times. Use valvoline full syn dex merc red bottle (if you didn't)
There's a chance it is slightly over or under filled. Hope it's that.
No need for shudder stop or anything else in it.
I've bought a few 4x4s with transmissions that shuddered or shifted hard. 2-3 drain and fills with the above fluid, and then a drain and fill every 30-40k has always eliminated the issue.
What are you towing?
If you're willing to flash the oil pump to not go down to 7 psi... Get the 7.3.
If you aren't, get the 5.0.
Contrary to forums, the new 7.3s are still having the occasional dead center cylinders.
There's a chance it is slightly over or under filled. Hope it's that.
No need for shudder stop or anything else in it.
I've bought a few 4x4s with transmissions that shuddered or shifted hard. 2-3 drain and fills with the above fluid, and then a drain and fill every 30-40k has always eliminated the issue.
quote:
Bonus question - the only 1/2 ton I am interested in is a F150 with the 5.0 crew cab with 6.5ft bed.
Being that you can get comparable trims in 3/4 ton gas for the same price should I look at getting a 3/4 ton gasser?
What are you towing?
If you're willing to flash the oil pump to not go down to 7 psi... Get the 7.3.
If you aren't, get the 5.0.
Contrary to forums, the new 7.3s are still having the occasional dead center cylinders.
This post was edited on 11/2/26 at 4:43 pm
Posted on 11/2/26 at 5:11 pm to X123F45
I was going to make a separate post to grade the 3/4 tons, F250, Chevy, Ram.
Honestly everything I tow can be pulled with the F150. 60HP tractor and hopefully a 22-24ft in the future. But the thought of a 3/4ton 8ft bed with a headache rack, toolbox, room to still put a 4 wheeler in the back and shut the tailgate. And haul a trailer sounds awesome.
Parking the thing not so much
Honestly everything I tow can be pulled with the F150. 60HP tractor and hopefully a 22-24ft in the future. But the thought of a 3/4ton 8ft bed with a headache rack, toolbox, room to still put a 4 wheeler in the back and shut the tailgate. And haul a trailer sounds awesome.
Parking the thing not so much
This post was edited on 11/2/26 at 5:13 pm
Posted on 11/2/26 at 5:46 pm to GREENHEAD22
I just had to replace the engine in my son's 2015 chevy silverado and the mechanic had 6 other trucks lined up in the same general year model that he said all needed engine work because of the AFM issue.
There has to be some kind of class action lawsuit on this at some point against GM.
There has to be some kind of class action lawsuit on this at some point against GM.
This post was edited on 11/2/26 at 5:47 pm
Posted on 11/2/26 at 5:49 pm to GREENHEAD22
$2000 for a new torque converter....go for it!
Posted on 11/2/26 at 8:20 pm to oldskule
Man I have almost $15K in work in it already.
I am done if it cost much more than $500.
Bite the bullet, get what I want and get extended warranty. Ride the new truck until the wheels fall off.
I am done if it cost much more than $500.
Bite the bullet, get what I want and get extended warranty. Ride the new truck until the wheels fall off.
Posted on 11/2/26 at 8:23 pm to GREENHEAD22
quote:
a 3/4ton 8ft bed with a headache rack, toolbox, room to still put a 4 wheeler in the back and shut the tailgate. And haul a trailer sounds awesome.
I dont think ill ever own another truck that isn't a 4 door long bed, unless its a 4 door flat bed. It's so damn nice to have.
Idk what to tell you about your current issue. If you haven't diagnosed it already its possible that it could be a valve body problem. Just a pressure regulator or a solenoid is usually a cheap fix.
Posted on 11/2/26 at 8:42 pm to GREENHEAD22
quote:
Bite the bullet, get what I want and get extended warranty. Ride the new truck until the wheels fall off.
Maybe during the bumper to bumper warranty... But after that, expect the same amount of repairs.
Posted on 11/2/26 at 8:43 pm to X123F45
I know there are some Ford warranties that you can get extended well past the factory for not that much $ considering the price of repairs.
Posted on 11/2/26 at 9:15 pm to GREENHEAD22
Thought mine was transmission but ended fixing it with new plugs and coils
Page 1 of 1
Popular
Back to top
Follow TigerDroppings for LSU Football News