Need some advice....8 speed GMC Transmission Problem

Buz

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I really wanted to keep this truck :( looks like I am going to have to get rid of it. I hope lemon law will pay for all the custom work I’ve had done. The loss at this point is going to hurt my soul. I’ve taken so many losses at this point on cars I’m getting so sad. Bought a new vehicle thinking I could keep this thing for a long time but noooooooo
The Lemon Law will cover $0 of any upgrades you've done to the truck.
The law also allows GM to reduce the amount you're paid according to mileage on the vehicle.
 

Logan T

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The Lemon Law will cover $0 of any upgrades you've done to the truck.
The law also allows GM to reduce the amount you're paid according to mileage on the vehicle.
Should I trade it in then? I feel like that might hold more value? I got the amp power running boards. Leveling kit with bigger and nicer tires they’re brand new tires. I can take the laser jammers out no problem but was a lot of money for install.
 

Deacon

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You can always try to sell it privately first. It’s still new enough people can get financing easily.
 

CobawLT2010

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Sick of here...
Should I trade it in then? I feel like that might hold more value? I got the amp power running boards. Leveling kit with bigger and nicer tires they’re brand new tires. I can take the laser jammers out no problem but was a lot of money for install.
I would say yank it all and sell the parts. Hopefully you kept the OEM parts.
 

Logan T

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Yes I kept all OEM parts. Would it be worth removing the power running steps as I’m not sure I can reuse them depending on what I get or do and being able to sell it seems like a hassle. I could easily change out the tires as I kept the stock tires. Mostly all of my loss would be install prices. I’m not good at working on my cars as I always mess something up when I try to do something so I usually I pay an actual shop to do it. 100$ to remove running boards and put stock on. I paid around 300$ for custom hardwiring mute button for radar and the hardwiring front and rear dash cam. I paid 900$ for laser jammer install. I was quoted at 400$ to remove laser jammers. I mean I’m ready to take the loss as I don’t want this truck anymore but man oh man this sucks
 

Deacon

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man oh man this sucks
It sucks all around, but $400 to remove jammers sounds exorbitant. It’s really a whole lot easier to remove stuff than install it. You should consider giving it a try. Or if you really want a shop to do it, anyone capable of installing jammers is capable of everything else. Try negotiating with them on the understanding that you will bring the replacement vehicle to them to do the dashcam and jammer installs.
 

Gunney57

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The 15-17 variants are highly problematic, 18 and 19 so far have been ok. If the guy doing the learn isn't experienced with the procedures it won't feel quite right. I have spent 4 hours before driving a truck to get it to shift perfect in my opinion. GM labor times do not pay great for technicians and most flat rate guys will not spend more than they need to. It is overall silly and agree it is jumping through hoops at times.



Totally agree. Each year there is something new and I just think to myself all the issues it will be. It is amazing how much they stuff in them and to go drive an old 4L80 4 speed and the thing shifts flawlessly for such a basic transmission.
Ageed! I long for the old Turbo-Hydramatic days. I never thought I'd say the 700R-4 was a good trans, but here we are.....
 

Logan T

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Sorry for ranting. Got the vehicle back today again and they said that it's normal for the truck on cold start up to do this. That I should let the truck warm up 5-10 minutes before driving it or he said just remote start it....The service report I got back today says truck is still learning new shifts and that it's normal on cold start. The first service about it on Wednesday of last week they unplugged my dash cam which is very shady. Today I got it back and my dash cam was plugged in and I watched all of it. They just moved it once and let it sit there and then a few hours later called me and said it was ready.... They didn't even do anything and no one looked at it.
 

Logan T

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Not really. I don’t think they have any obligation to let you record them.


Now that’s shady :)
They moved it twice the service people. No one else got in it. They kept it from 6 am to 2pm and it just sat there the entire time.
 

CobawLT2010

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They moved it twice the service people. No one else got in it. They kept it from 6 am to 2pm and it just sat there the entire time.
You positive they didn’t have it hooked up to a computer... a lot of the trans stuff is computer crap. Was it outside the whole time?
 

Logan T

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You positive they didn’t have it hooked up to a computer... a lot of the trans stuff is computer crap. Was it outside the whole time?
Yes it was outside the entire time. I checked front and rear and no one else got it in except the two service people that move cars
 

CobawLT2010

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Yes it was outside the entire time. I checked front and rear and no one else got it in except the two service people that move cars
Find yourself a different dealer.

Personally I’ve switched dealers tons of times due to these shenanigans. I’ve never found a “great” dealer.

I do most “work” myself because of it.

Even warranty work I find them fucking up more stuff than fixing what is broken. Even with pictures or videos of proof of issues they say “can not replicate or normal”.

I’m sorry there is nothing normal about the issues I come in with that their techs broke.
 
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rider9195

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Sorry for ranting. Got the vehicle back today again and they said that it's normal for the truck on cold start up to do this. That I should let the truck warm up 5-10 minutes before driving it or he said just remote start it....The service report I got back today says truck is still learning new shifts and that it's normal on cold start. The first service about it on Wednesday of last week they unplugged my dash cam which is very shady. Today I got it back and my dash cam was plugged in and I watched all of it. They just moved it once and let it sit there and then a few hours later called me and said it was ready.... They didn't even do anything and no one looked at it.
Majority of the techs I know and I talk to on groups and forums are so against dash cams recording while they are using the car or working on it. It it truly silly.

I see you said it shows only two people got into the truck. I would ask if they even scanned it or checked for programming updates. Anytime GDS2 is hooked up to a vehicle and check for codes it records it on that specific computer time stamped and all. So unless they delete that session you can tell what the tech actually did, or even if one looked at it.
 

Gunney57

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Majority of the techs I know and I talk to on groups and forums are so against dash cams recording while they are using the car or working on it. It it truly silly.

I see you said it shows only two people got into the truck. I would ask if they even scanned it or checked for programming updates. Anytime GDS2 is hooked up to a vehicle and check for codes it records it on that specific computer time stamped and all. So unless they delete that session you can tell what the tech actually did, or even if one looked at it.
I've seen a LOT of the "fresh air treatment" at dealers.
 

knight_man

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some BS man. Typical stealership. Try another one if you can, mostly hold your breath.

And if a mechanic has a problem being recorded (with the understanding that people are just people) then it seems you need new mechanics.

Just wondering, if you take off your tune and custom parts, do a proper relearn, do you still have those shifting issues?
 

Logan T

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It's been running stock tune for a long time. It's only been 93 tuned for about 2 months. It happened even when it was technically stock. The only mods I really have is the leveling kit and bigger tires.
My 93 tune actually helps it not be so bad. When it's running stock it actually feels like I'm getting rear ended and every morning I brace myself right before it clunks to second gear. Obviously I can't keep it on the 93 tune for warranty work.
 
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Gunney57

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some BS man. Typical stealership. Try another one if you can, mostly hold your breath.

And if a mechanic has a problem being recorded (with the understanding that people are just people) then it seems you need new mechanics.

Just wondering, if you take off your tune and custom parts, do a proper relearn, do you still have those shifting issues?
Been searching for the "right" dealer for years for our fleet. Thousands of dollars spent at the three that are nearby (sort of) and I can't say the warranty side of things has gotten any better. The automakers pay such piddling amounts for the warranty work that the dealer will do about anything to get out of doing it.
Why should we pay for "diagnostics" to find an issue that is under warranty? Beause GM or Fiat-Chrysler won't!
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It's been running stock tune for a long time. It's only been 93 tuned for about 2 months. It happened even when it was technically stock. The only mods I really have is the leveling kit and bigger tires.
My 93 tune actually helps it not be so bad. When it's running stock it actually feels like I'm getting rear ended and every morning I brace myself right before it clunks to second gear. Obviously I can't keep it on the 93 tune for warranty work.
Hope you have better luck getting satisfaction than us, I truly do.
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I don't find any posts of anyone using it on these 8sp transmissions, but I've personally used Lubegard 19610 anti-shudder additive on several vehicles. Learned about it from the only transmission shop that I trust in this area. Worked pretty well if the converter wasn't shot already. It's a 2oz tube so won't affect the level much. Good luck getting to the fill plug tho!
 
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rider9195

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Been searching for the "right" dealer for years for our fleet. Thousands of dollars spent at the three that are nearby (sort of) and I can't say the warranty side of things has gotten any better. The automakers pay such piddling amounts for the warranty work that the dealer will do about anything to get out of doing it.
Why should we pay for "diagnostics" to find an issue that is under warranty? Beause GM or Fiat-Chrysler won't!
Post automatically merged:
This is the real issue. GM has been cutting labor times like crazy as of this year. All the seasoned techs don't waste time with some stuff anymore because it doesn't pay to throughly look at and diagnose.




Sent from my SM-G950U using Tapatalk
 

Gunney57

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This is the real issue. GM has been cutting labor times like crazy as of this year. All the seasoned techs don't waste time with some stuff anymore because it doesn't pay to throughly look at and diagnose.




Sent from my SM-G950U using Tapatalk
Following the F-C model. It's a shame that a purchase that is this expensive has gone the customer no-service route
 

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