"OFFICIAL" LML Blown Engine Thread...
Ok, fellas... I'm on a hunt to see how many people have been having engine issues with their LML, specifically piston failure... I've quit counting how many haulers in my area here have '15s that have had pistons grow holes... I'd like to figure out if there is a problem with the pistons, or if these issues are specific to deleted trucks, or specific to certain tuners, etc... I do know that the pistons have been getting less and less material with each passing generation of engine. I wonder if they just got a bit to thin in the later LML's, or what's happening... I'm also very interested in how the L5P pistons will hold up to heavy hauling in the long run...
This is what I'm looking for...
1. What year is your LML?
2. Stock or deleted?
3. If deleted, how many miles stock, and how many miles deleted?
4. If deleted, what tuner?
5. What other mods if deleted?
6. Under what circumstances did your pistons fail? Normal driving, racing, towing, etc...
7. In what cylinder did the piston fail?
Any pictures of carnage would be great!! >
My experience:
I haul heavy, grossing 20-26k daily, and have been from the 1st day I got the truck. The truck was deleted around 120k, I had no issues whatsoever with the truck up until this mileage, one day it gave me reduced engine power. I turned it off, back on, and got home, but immediately deleted. At 170k I was loaded around 28k one day, pulled hard all day in the WV hills, notice very slight blue smoke out of the tail pipe all day, and that evening on the way home, empty, up a slight grade on the interstate, the truck started shaking and belching blue smoke. I immediately knew what had happened, so I got another truck to pick me up and hauled me home. And the rebuild started...
2015 GMC SRW 3500...
Stock for 120k, deleted ever since 120k, blew motor at 170k...
Kory Willis (PPEI) heavy tow tune
Stock downpipe, 5" straght FloPro
Failed while empty after a day of pushing it fully loaded...
Piston #7 failed for me...
Looking forward to seeing what all has happened out there already...
Ok, fellas... I'm on a hunt to see how many people have been having engine issues with their LML, specifically piston failure... I've quit counting how many haulers in my area here have '15s that have had pistons grow holes... I'd like to figure out if there is a problem with the pistons, or if these issues are specific to deleted trucks, or specific to certain tuners, etc... I do know that the pistons have been getting less and less material with each passing generation of engine. I wonder if they just got a bit to thin in the later LML's, or what's happening... I'm also very interested in how the L5P pistons will hold up to heavy hauling in the long run...
This is what I'm looking for...
1. What year is your LML?
2. Stock or deleted?
3. If deleted, how many miles stock, and how many miles deleted?
4. If deleted, what tuner?
5. What other mods if deleted?
6. Under what circumstances did your pistons fail? Normal driving, racing, towing, etc...
7. In what cylinder did the piston fail?
Any pictures of carnage would be great!! >
My experience:
I haul heavy, grossing 20-26k daily, and have been from the 1st day I got the truck. The truck was deleted around 120k, I had no issues whatsoever with the truck up until this mileage, one day it gave me reduced engine power. I turned it off, back on, and got home, but immediately deleted. At 170k I was loaded around 28k one day, pulled hard all day in the WV hills, notice very slight blue smoke out of the tail pipe all day, and that evening on the way home, empty, up a slight grade on the interstate, the truck started shaking and belching blue smoke. I immediately knew what had happened, so I got another truck to pick me up and hauled me home. And the rebuild started...
2015 GMC SRW 3500...
Stock for 120k, deleted ever since 120k, blew motor at 170k...
Kory Willis (PPEI) heavy tow tune
Stock downpipe, 5" straght FloPro
Failed while empty after a day of pushing it fully loaded...
Piston #7 failed for me...
Looking forward to seeing what all has happened out there already...