@@karlschauff7989 I have a 2024 LT Crew Cab standard bed 4wd with the LZ0 and NHT and it is labeled as Conventional Trailer 13000 lbs and GCWR 19000 lbs.
i think a lot of manufacturers lie about tow ratings. My 22 Jeep grand Cherokee v6 had a 6200lb tow rating. It couldn't get above 5th gear towing my 1000lb empty v nose 6x12 enclosed. doing almost 3000rpm on flat ground to maintain 55mph.
My 15 jeep grand Cherokee v6 towed 5,500 lbs across the USA. Mountain ranges and all. No problem handling interstate cruise at 65mpg in 7th gear. Around 10mpg overall.
@@johnsmith-dx1rf He shows the active PID in the video @8:07, it's a P2B86 which he says is, "overspeed aux coolant." After scouring the internet for that code, it's apparently a common ISO/SAE code that reads, "Coolant Pump "A" Overspeed/Air in System." Just guessing here but it's likely that, with his truck in the shop for the last 6 months, it's possible the the cooling loop may have had to be cracked open to get to some other parts and some residual air may have still needed to burp out. There are two cooling loops with the LM2/LZ0 - the primary one for the engine as a whole and another, smaller one dedicated to the charge-air cooler (basically a liquid-cooled intercooler for the incoming air after the turbo). In this context, it's likely that the CAC loop was the culprit seeing as how the triggered PID belongs to the, "Fuel and air metering and aux emission controls" group. It's also right at the top of the engine and is most likely the first thing to get removed for any kind of major service on the top of the engine. Out of the factory, the LM2 wasn't designed as a half-ton towing monster. If they wanted that, they wouldn't have limited it to 3.0L or made design/engineering choices that favor NVH/drivability (belt-driven oil pump on the BACK of the engine, for instance). They had a 4.5L V8 in development before the bailout, tentatively coded LMK. That probably would have been a better choice for longevity - less turbo pressure required to get similar performance they're currently getting out of the 3.0L means less stress on internal parts, less heat, etc. Just guessing here but I'm betting they didn't revive it after the bailout because it would have cut a little too deep into the 3/4-ton market to have a more capable 1/2-ton before someone would consider moving up. I've got a '20 Silverado with the LM2 and am quite happy with it. The few times I've needed to tow and haul, it performed more than adequately while economy (relatively speaking) has been excellent. And, honestly, if I need to tow more than about 7000 lbs regularly, I'll be getting a 3/4-ton truck, anyway. These max-tow tests with 1/2-ton trucks is a great paper exercise to keep GM and the other manufacturers honest. But they're corner-cases (not saying people don't/won't use their trucks to the max limit but you'll get better results by stepping up into the 3/4-ton trucks at that point). Now - if someone will make a kit that swaps the oil pump to gear or chain drive at that 100K service, I'll be the first to sign up. I fully expect this little engine to out-last the truck with a couple of minor tweaks like that.
Im unsure what this video is about really, i have a 2024 rst redline max tow with the 3.73 gear and its only rated for 13400... so youre trying to overload your truck in a worst case scenario situation? I have a dumpster rental business and tow my 14k dump trailers every day with 0 issues...
Weren't you concerned as you hit 230 on the transmission temp? Seems quite high. Highest I have seen on mine pulling travel trailer has been 204 with headwind, uphill grade and 7300# behind
230 is way too high and will cause premature damage to seals, clutch packs, and the friction material of the torque converter clutch. The fluid is severely oxidized and needs to be changed.
@@karlschauff7989230 is not “way” too high. It’s on the upper end of normal. 240, 250 would probably need a fluid change, but by no means toasting the tranny
so i guess i do not understand this video you overloaded your truck by either 6k or 2k depending on what model you have exactly and are mad and upset over it that trailer in your video start weighs 5k just trying to understand the math of your towing of 15k
![เปิด อาณาจักร หมื่นล้าน "สาระตั้ม" l [Nickynachat]](http://i.ytimg.com/vi/3XE0nPF4YkQ/mqdefault.jpg)
3.0 engine pulling 15k pounds. I say its a win, pulled better then what i thought. I think it pulls better then the 6.6 gasser.
Thinking you have to have the max tow package with 3.73 gears to pull the max 13000lb. Otherwise it's only around 9k.
Correct 2021 AT4 rated to 8,800lbs
More specifically, a Double cab standard bed truck with the NHT Max Tow package.
@@karlschauff7989 I have a 2024 LT Crew Cab standard bed 4wd with the LZ0 and NHT and it is labeled as Conventional Trailer 13000 lbs and GCWR 19000 lbs.
i think a lot of manufacturers lie about tow ratings. My 22 Jeep grand Cherokee v6 had a 6200lb tow rating. It couldn't get above 5th gear towing my 1000lb empty v nose 6x12 enclosed. doing almost 3000rpm on flat ground to maintain 55mph.
that's how gassers are designed, they need revs to generate power.
My 15 jeep grand Cherokee v6 towed 5,500 lbs across the USA. Mountain ranges and all. No problem handling interstate cruise at 65mpg in 7th gear. Around 10mpg overall.
@@TheSouders my 22 JGC overland V6 could hardly handle a 1000lb empty 6x12 inclosed. it was a 10 speed and couldnt get more than 5th gear at 60.
It made it just fine without breaking down or anything failing. Not really seeing an issue.
The check engine light is a breakdown
Especially where I left out the part in the video where it just came out of the shop after being in there for 6 months
What was the code indicating?
@@johnsmith-dx1rf He shows the active PID in the video @8:07, it's a P2B86 which he says is, "overspeed aux coolant." After scouring the internet for that code, it's apparently a common ISO/SAE code that reads, "Coolant Pump "A" Overspeed/Air in System." Just guessing here but it's likely that, with his truck in the shop for the last 6 months, it's possible the the cooling loop may have had to be cracked open to get to some other parts and some residual air may have still needed to burp out. There are two cooling loops with the LM2/LZ0 - the primary one for the engine as a whole and another, smaller one dedicated to the charge-air cooler (basically a liquid-cooled intercooler for the incoming air after the turbo). In this context, it's likely that the CAC loop was the culprit seeing as how the triggered PID belongs to the, "Fuel and air metering and aux emission controls" group. It's also right at the top of the engine and is most likely the first thing to get removed for any kind of major service on the top of the engine.
Out of the factory, the LM2 wasn't designed as a half-ton towing monster. If they wanted that, they wouldn't have limited it to 3.0L or made design/engineering choices that favor NVH/drivability (belt-driven oil pump on the BACK of the engine, for instance). They had a 4.5L V8 in development before the bailout, tentatively coded LMK. That probably would have been a better choice for longevity - less turbo pressure required to get similar performance they're currently getting out of the 3.0L means less stress on internal parts, less heat, etc. Just guessing here but I'm betting they didn't revive it after the bailout because it would have cut a little too deep into the 3/4-ton market to have a more capable 1/2-ton before someone would consider moving up.
I've got a '20 Silverado with the LM2 and am quite happy with it. The few times I've needed to tow and haul, it performed more than adequately while economy (relatively speaking) has been excellent. And, honestly, if I need to tow more than about 7000 lbs regularly, I'll be getting a 3/4-ton truck, anyway. These max-tow tests with 1/2-ton trucks is a great paper exercise to keep GM and the other manufacturers honest. But they're corner-cases (not saying people don't/won't use their trucks to the max limit but you'll get better results by stepping up into the 3/4-ton trucks at that point). Now - if someone will make a kit that swaps the oil pump to gear or chain drive at that 100K service, I'll be the first to sign up. I fully expect this little engine to out-last the truck with a couple of minor tweaks like that.
How long did it take for the tow truck to pick you up?
Im unsure what this video is about really, i have a 2024 rst redline max tow with the 3.73 gear and its only rated for 13400... so youre trying to overload your truck in a worst case scenario situation? I have a dumpster rental business and tow my 14k dump trailers every day with 0 issues...
Great video , super informative.
What where you pulling ? Was that it 15k ?
This is the J2807 Davis Dam test. the combination weighed 15k lbs.
What oil do you use brother?
I put about 2 bottles of redline water wetter in my radiator to help bring the oil temps down.
And was still passing some cars going up the mountain even towing another truck...
I thought 13,300 was the max towing?
Weren't you concerned as you hit 230 on the transmission temp? Seems quite high. Highest I have seen on mine pulling travel trailer has been 204 with headwind, uphill grade and 7300# behind
No GM rates it for 300 is what they told TFL
230 is way too high and will cause premature damage to seals, clutch packs, and the friction material of the torque converter clutch. The fluid is severely oxidized and needs to be changed.
@@karlschauff7989230 is not “way” too high. It’s on the upper end of normal. 240, 250 would probably need a fluid change, but by no means toasting the tranny
Hello, did the dealer was able to fix the issue ? I got the same code after the engine RPM reached 4000 rpm, I cleared the code and no more issue.
@@mathieulavoie424 nope. But pretty clear it's the aux pump is bad.
@@duramaxadventures5832 so what happened, you just cleared the code ? This is what I did on mine and it did no reoccur.
@@mathieulavoie424 I made them buy it back. $75k and can't even bother to fix the issue the first 2 times.
What percent grade was it? Really doesn’t look like that bad of a tow test.
covered at 0:43
7-10 percent grade and 120 degrees in the summer.
@@TransAm02droptop And 2000 lbs over the max rating of the truck.
@@karlschauff798915,000 lbs trailer and truck. Trailer was less.
TBH, if you regularly tow 15k pounds... Why are you in a 1/2 ton?
I don't, thats the whole point.
Was it overheating? Engine temp looked like it was pegged.
No those gauges on the right are from a program, I didn't set the temp gauge high enough.
@@duramaxadventures5832so what was the actual temp? At 290 you’re gonna start burning out bearings and your oil won’t help much at that point
so i guess i do not understand this video you overloaded your truck by either 6k or 2k depending on what model you have exactly and are mad and upset over it
that trailer in your video start weighs 5k just trying to understand the math of your towing of 15k
Nope, we are at the 15k GCWR rating
Is this a rental truck or your truck lol
My truck, why