[Jonnydz]

Originally Posted by Z OH 6

Because the failure rate was only high in 2017 and 2018 models and GM covered them under warranty when they failed which was 5 years ago now.

Wrong the failure rate on all zl1’s is 100%. If u doubt this u are in denial

[Z OH 6]

Originally Posted by Jonnydz

Wrong the failure rate on all zl1’s is 100%. If u doubt this u are in denial

You are clearly clueless.

I think you should proceed with your lawsuit. Make sure you provide evidence of the 100% failure rate.

Please keep us posted on how it turns out.

[Curr]

Originally Posted by Z OH 6

You are clearly clueless.

I think you should proceed with your lawsuit. Make sure you provide evidence of the 100% failure rate.

Please keep us posted on how it turns out.

[nighttowl]

Originally Posted by MT-SS1LE

Agree completely, Grew up with my parents then me owning Toyotas in the 80s and 90s. Those vehicles were legendary for there reliability. I have a 2010 Tundra I bought new.

I have a 2010 4x4 tundra with the 5.7L.

This is my favorite vehicle, and I have had at least 40 different vehicles over the years.
Its awesome.

I put gas in it and change the oil, and it just goes. It has 230k on it so far, with a few hundred dollars in repairs. Some may find this a little far fetched but it still has the original oil pump!!!

[Broooster]

Originally Posted by nighttowl

I have a 2010 4x4 tundra with the 5.7L.

This is my favorite vehicle, and I have had at least 40 different vehicles over the years.
Its awesome.

I put gas in it and change the oil, and it just goes. It has 230k on it so far, with a few hundred dollars in repairs. Some may find this a little far fetched but it still has the original oil pump!!!

It's not a Toyota, but my 2017 Honda Accord with the 3.5 liter just rolled over 200K yesterday, regular oil changes and maint stuff, burns no oil and cruises right along. Still has the original oil pump.

[Z OH 6]

Originally Posted by Broooster

It's not a Toyota, but my 2017 Honda Accord with the 3.5 liter just rolled over 200K yesterday, regular oil changes and maint stuff, burns no oil and cruises right along. Still has the original oil pump.

Here's the thing that people seem to forget when comparing reliability of Honda, Toyota, etc. to other brands. Those vehicles make jack shit for power. When you engineer an engine around low power output, they will last a LOT longer. It's simply physics and materials don't last as long the more power you make. When you're comparing those vehicles to other brands that make significantly more power, of course they will last longer.

[Joshinator99]

Originally Posted by Z OH 6

Here's the thing that people seem to forget when comparing reliability of Honda, Toyota, etc. to other brands. Those vehicles make jack shit for power. When you engineer an engine around low power output, they will last a LOT longer. It's simply physics and materials don't last as long the more power you make. When you're comparing those vehicles to other brands that make significantly more power, of course they will last longer.

100%. The higher the specific output, the more likely they live shorter lives. I found the best way around that is to keep changing massive amounts of parts every year so that nothing can ever wear out.

[Jonnydz]

Originally Posted by Curr

So u think gm fixed the pump in the newer zl1s? I would love to hear your explanation supporting this

[Z OH 6]

Originally Posted by Jonnydz

So u think gm fixed the pump in the newer zl1s? I would love to hear your explanation supporting this

Pretty simple really, GM released a tech bulletin specifically stating that the 2017 and 2018 model years were affected. The oil pumps were redesigned in late 2018 so the 2019+ models had the redesigned oil pump. Oil pump failures dropped to normal failure levels after that. End of story.

[Z OH 6]

Originally Posted by Joshinator99

100%. The higher the specific output, the more likely they live shorter lives. I found the best way around that is to keep changing massive amounts of parts every year so that nothing can ever wear out.

Hah, sounds like an expensive but effective strategy.

[arpad_m]

Originally Posted by Jonnydz

So u think gm fixed the pump in the newer zl1s? I would love to hear your explanation supporting this

Here's some statistical evidence. GM changed the oil pump part number several times, and their last change (to part number 12686434) corresponds to the drastic drop in failures reported through this forum.

Now obviously this isn't a fully representative survey, but it's most likely relevant.

Note also that failures weren't completely eliminated, which was highlighted by Katech in another thread; GM improved the design but didn't completely address the root cause (as usual). However, Katech's billet steel replacement seems to be bulletproof.

[ZLRob]

Originally Posted by nighttowl

I have a 2010 4x4 tundra with the 5.7L.

This is my favorite vehicle, and I have had at least 40 different vehicles over the years.
Its awesome.

I put gas in it and change the oil, and it just goes. It has 230k on it so far, with a few hundred dollars in repairs. Some may find this a little far fetched but it still has the original oil pump!!!

Originally Posted by Broooster

It's not a Toyota, but my 2017 Honda Accord with the 3.5 liter just rolled over 200K yesterday, regular oil changes and maint stuff, burns no oil and cruises right along. Still has the original oil pump.

Oil pump failures are a GM thing really. Honda, Toyota and them don't suffer from this issue because they understand the assignment and know the importance of critical items like those, so they make them well and they design them to last the life of the vehicle, no matter how much power you mod into them.


GM on the other hand likes to contract out to the lowest bidder on critical items because the shareholders are the most important thing in the world to them and then when they fail before the warranty is up they are left backpedaling trying to save face by denying claims as much as they can blaming it on the end user or by putting out a TSB acknowledging there's a problem with them but thats usually about as far as they go.


Same goes for the DOD lifters that they had been putting on these darn cars. They're also junk.


If anyone is capable of designing a rock solid forever car, it's actually GM. They've been in the game since the beginning and they understand engine theory and operation better than anyone is capable of knowing at this point (maybe with the exception of Ford but I digress). They just refuse to do it because you know, that wouldn't make them any money and at the end of the day they want and need more of that money.

[Z OH 6]

Originally Posted by ZLRob

Oil pump failures are a GM thing really. Honda, Toyota and them don't suffer from this issue because they understand the assignment and know the importance of critical items like those, so they make them well and they design them to last the life of the vehicle, no matter how much power you mod into them.


GM on the other hand likes to contract out to the lowest bidder on critical items because the shareholders are the most important thing in the world to them and then when they fail before the warranty is up they are left backpedaling trying to save face by denying claims as much as they can blaming it on the end user or by putting out a TSB acknowledging there's a problem with them but thats usually about as far as they go.


Same goes for the DOD lifters that they had been putting on these darn cars. They're also junk.


If anyone is capable of designing a rock solid forever car, it's actually GM. They've been in the game since the beginning and they understand engine theory and operation better than anyone is capable of knowing at this point (maybe with the exception of Ford but I digress). They just refuse to do it because you know, that wouldn't make them any money and at the end of the day they want and need more of that money.

OK...

[lamp210]

so did GM ever address the issue in the later years?