2017 Sierra SLE 5.3 back from tune

[Zachofalltrades]

On 12/26/2018 at 4:42 PM, paracutin said:

I agree with you. However, I would not tune a vehicle that is still under warranty. Not taking the chance of having my power train warranty voided. 

I’ve heard the debate both ways about whether or not a tune would affect the warranty, but the bottom line is what is important to the owner.  A 60k Powertrain warranty is not that big of a deal because 98% of vehicles will never use it.  

 

I work full time and I’m in grad school so it’s worth it to keep mine intact because I don’t have the time to do it myself.  But performance oriented individuals want to get the most power on a young vehicle so there’s no sense in them waiting until the warranty is out, because if they’re going to break something they’ll have to pay for it either way.

 

That being said, congrats to the OP on the tune, not bad numbers out of a tune on a naturally aspirated engine not changing fuels!

[TRKLGND]

1 hour ago, Zachofalltrades said:

I’ve heard the debate both ways about whether or not a tune would affect the warranty, but the bottom line is what is important to the owner.  A 60k Powertrain warranty is not that big of a deal because 98% of vehicles will never use it.  

 

It is a big deal if you are one of the 2% that now needs to spend $3k - $4k to fix something.  And yes, it is completely up to the owner.

[Zachofalltrades]

1 hour ago, paracutin said:

It is a big deal if you are one of the 2% that now needs to spend $3k - $4k to fix something.  And yes, it is completely up to the owner.

Right, but it’s not as simple as “you tuned your truck, now your warranty is void if your motor blows up.”  The burden is on the dealer to prove that the tune caused the problem.  Not to say that they wouldn’t try and you might have to settle it in court, but pointing out an awareness of legal limits is sometimes sufficient.  So problems like a lean mixture burning a hole in a piston is surely on you, but your rear end failing when it’s the same axle that’s bolted to a 6.2l would be problematic for them to deny.  

 

Bottom line is I’m not tuning my truck because I don’t have time to deal with it.  When you start modding you just need to be aware of possible effects and realize that you need to be prepared to do your own repairs or pay for them if your tune goes awry, but simply choosing one is not going to “void” your warranty, they are still responsible for failures caused by manufacturer defects.

[KARNUT]

I write this periodically in tune threads. Anyone who's tuned their gas vehicles and been denied warranty work please speak up. I for one have modified or tuned every truck I've owned. I'm 63 and averaged a truck every 3 years till I turned 58 and retired. I had 3 warranty claims, last one was on a trailblazer ss. It was a transmission was tuned no problems. People have no problem saying your going to be denied with a tune, possible I guess haven't heard of one yet.

 

 

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[Hillwood]

Anytime there is an engine or transmission failure, the cals have to be pulled and sent to GM.. No repairs done until they get back to the dealer with the results.

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[SS502]

1 hour ago, Hillwood said:

Anytime there is an engine or transmission failure, the cals have to be pulled and sent to GM.. No repairs done until they get back to the dealer with the results.

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I think right now with the numerous complaints about the transmissions and vibration issues, GM would certainly like to point the finger at anything that might take the blame. If they see a tune (although I am not sure if the 8 speed is truly tunable yet) they are going to blame that. They have enough failures that belong to them so to blame anything else is now in their best interests regardless of dealership decency.

[thekevin]

Physically that’s about it. But you have to add the ability in the tune. 

So what do you do if you just want to add E85 capability on a stock vehicle. I thought the thread I read said the factory computer was ready for it and you just need the sensor.


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[3tspapat]

Hey OP...you only commented on the numbers and some af, but i'm sure overall drive-ability is much more enjoyable right? to me just the better drive-ability is worth every penny (assuming you didn't pay too much). 8 speed tranny can't be tuned, or has to be hacked. I'm getting conflicting info regarding tuning on the eAssists.  

[TRKLGND]

17 hours ago, thekevin said:

 

So what do you do if you just want to add E85 capability on a stock vehicle. I thought the thread I read said the factory computer was ready for it and you just need the sensor.


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Nope.  If your vehicle is not E85 capable you need to add the alcohol sensor and have a tune to take advantage of the sensor and the fuel.  Someone said the plug on the harness is on every truck, you just need to add the sensor and tune.

[TRKLGND]

16 hours ago, 3tspapat said:

Hey OP...you only commented on the numbers and some af, but i'm sure overall drive-ability is much more enjoyable right? to me just the better drive-ability is worth every penny (assuming you didn't pay too much). 8 speed tranny can't be tuned, or has to be hacked. I'm getting conflicting info regarding tuning on the eAssists.  

So far, I think HP tuners is the only ones that can tune an 8 speed.  And yes, it has to be hacked first.  

[6.2_GMC_DEN]

2 hours ago, paracutin said:

Nope.  If your vehicle is not E85 capable you need to add the alcohol sensor and have a tune to take advantage of the sensor and the fuel.  Someone said the plug on the harness is on every truck, you just need to add the sensor and tune.

Correct add sensor in fuel line and connect it with truck harness. The harness connector is on drivers side frame rail by transmission cross member. 

[Hillwood]

I think right now with the numerous complaints about the transmissions and vibration issues, GM would certainly like to point the finger at anything that might take the blame. If they see a tune (although I am not sure if the 8 speed is truly tunable yet) they are going to blame that. They have enough failures that belong to them so to blame anything else is now in their best interests regardless of dealership decency.

The tune would only be a problem if you had a major engine or transmission failure.. When the repairs add up to thousands, GM wants the cals... And that is when you get a total warranty void.


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[thekevin]

Is that something the dealer can enable. I only have 7000 miles on my 2018 and have warranty through 120k so I don’t plan on tuning it any time soon.


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[EIKON]

The dealer is only allowed to put in calibrations gym has approved for your VIN number. If you want to add e-85 ability, you’ll have to do it aftermarket. 

[RMR]

On ‎12‎/‎28‎/‎2018 at 12:28 PM, 3tspapat said:

Hey OP...you only commented on the numbers and some af, but i'm sure overall drive-ability is much more enjoyable right? to me just the better drive-ability is worth every penny (assuming you didn't pay too much). 8 speed tranny can't be tuned, or has to be hacked. I'm getting conflicting info regarding tuning on the eAssists.  

Yes, see my last post on page 1.  Trans is more responsive for sure.