Chevy 1500 Duramax Diesel Problems Again?
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Date: 2020-11-25
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Comments and reviews: 10
ML
Several scenarios why I bought the Duramax 3. 0: Many say just go out and buy a the 2020 HD Diesel or HD gas, The 2020 HD Diesel comparable model costs over 60k before tax' s and etc, I paid 45K plus tax's if on sale. That is 15 K difference on a HD diesel vs the 3. 0 Diesel. The 6. 2 Gas engine comparable model is 10K or more as well If remembering correctly. The reason I took the chance on the 3. 0 Duramax was because of the MPG and I tow under 10, 000 pounds and the price difference vs the other choices vs the 5. 3 L engine. I really love that you can drive over 700 miles plus on a road trip without stopping for diesel. I have really become comfortable after driving the truck over 150 hours per the truck computer. I am not a fan of the DEF, but not a deal killer. My mechanic friend said to put exact OIL GM mandates. Only GM stocks the oil at this time per my friend, a very specific oil. Not the same oil at the store, if the numbers match, not the same GM oil, GM added another ingredient, note the after the oil numbers I think. I can't explain technically, but buy the Diesel Duramax 3. 0 OIL from GM or warranty or engine could be problematic. I will assume other choices for the oil will be produced for the Duramax 3. 0 oil in the future, but until then, I would not play games and buy the exact oil at the Dealership.
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Several scenarios why I bought the Duramax 3. 0: Many say just go out and buy a the 2020 HD Diesel or HD gas, The 2020 HD Diesel comparable model costs over 60k before tax' s and etc, I paid 45K plus tax's if on sale. That is 15 K difference on a HD diesel vs the 3. 0 Diesel. The 6. 2 Gas engine comparable model is 10K or more as well If remembering correctly. The reason I took the chance on the 3. 0 Duramax was because of the MPG and I tow under 10, 000 pounds and the price difference vs the other choices vs the 5. 3 L engine. I really love that you can drive over 700 miles plus on a road trip without stopping for diesel. I have really become comfortable after driving the truck over 150 hours per the truck computer. I am not a fan of the DEF, but not a deal killer. My mechanic friend said to put exact OIL GM mandates. Only GM stocks the oil at this time per my friend, a very specific oil. Not the same oil at the store, if the numbers match, not the same GM oil, GM added another ingredient, note the after the oil numbers I think. I can't explain technically, but buy the Diesel Duramax 3. 0 OIL from GM or warranty or engine could be problematic. I will assume other choices for the oil will be produced for the Duramax 3. 0 oil in the future, but until then, I would not play games and buy the exact oil at the Dealership.
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Lee
Probably not your issue, but if you plug in the engine block heater on the LM2 when the temp is not below freezing, the software will turn the fans on max because the engine coolant gets hot but the outside temp is not low enough (truck thinks its overheating. The fans will not reset until after the truck sits off for at least 30 minutes. I found this out when I plugged in the truck overnight when it was expected to freeze but didnt. There is a software update that addresses this.
That said, havent had any issues. love my Sierra AT4 with the LM2
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Probably not your issue, but if you plug in the engine block heater on the LM2 when the temp is not below freezing, the software will turn the fans on max because the engine coolant gets hot but the outside temp is not low enough (truck thinks its overheating. The fans will not reset until after the truck sits off for at least 30 minutes. I found this out when I plugged in the truck overnight when it was expected to freeze but didnt. There is a software update that addresses this.
That said, havent had any issues. love my Sierra AT4 with the LM2
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IKhan
The issue with modern diesels isn't so much the motor itself but the emission control crap on it. From the DEF sensors and pumps to EGRs and their sensors and the DPF they're always giving problems in that respect. If people use trucks like this for work they can't afford the downtime so even though the costs for the repairs will be covered the business costs will be an issue. At this point I'd get a simple gasser motor and eat the extra fuel costs because that at the least gets me to my next job versus the dealership service area.
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The issue with modern diesels isn't so much the motor itself but the emission control crap on it. From the DEF sensors and pumps to EGRs and their sensors and the DPF they're always giving problems in that respect. If people use trucks like this for work they can't afford the downtime so even though the costs for the repairs will be covered the business costs will be an issue. At this point I'd get a simple gasser motor and eat the extra fuel costs because that at the least gets me to my next job versus the dealership service area.
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hunt
I have a 2020 RST 3. 0 and after DEF calibrate started having Check Engine come on with unk code. While towing my trailer with maybe total 5k pounds check engine light came on after having a quick check while 1k miles into a 3K trip. Dealer said 7 errors came up and big item was intake manifold needed to be replaced. I had maybe 10K miles. I dont want a lemon for a new truck for that money. did Chevy help out or was it all dealer?
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I have a 2020 RST 3. 0 and after DEF calibrate started having Check Engine come on with unk code. While towing my trailer with maybe total 5k pounds check engine light came on after having a quick check while 1k miles into a 3K trip. Dealer said 7 errors came up and big item was intake manifold needed to be replaced. I had maybe 10K miles. I dont want a lemon for a new truck for that money. did Chevy help out or was it all dealer?
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21elkaholic
that's what happens when you buy from a company that has to be bailed out twice, and probably could of used third bail out when asked to build ventilators they needed more money? ya not a chevy fan anymore. getting rid of the 5. 7 350 a solid motor known as one of if not the best motors should of been a sign.
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that's what happens when you buy from a company that has to be bailed out twice, and probably could of used third bail out when asked to build ventilators they needed more money? ya not a chevy fan anymore. getting rid of the 5. 7 350 a solid motor known as one of if not the best motors should of been a sign.
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Aaron
I have the gmc version and my engine light comes on. My fans never come on like that and its been almost 100 degrees here for about 3 months. My dealership cant get me in for almost a week. So my light usually goes off the day before my appointment and they wont take it in if the light is off. Very frustrating.
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I have the gmc version and my engine light comes on. My fans never come on like that and its been almost 100 degrees here for about 3 months. My dealership cant get me in for almost a week. So my light usually goes off the day before my appointment and they wont take it in if the light is off. Very frustrating.
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Matthew
Engine reduce power, happened at 11, 000 miles and again at 21, 000, did it while driving when I tried to pass another vehicle. Now my truck wont even crank and guess what it tells me engine reduce power and i was just trying to start my day and go to work but it wont crank.
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Engine reduce power, happened at 11, 000 miles and again at 21, 000, did it while driving when I tried to pass another vehicle. Now my truck wont even crank and guess what it tells me engine reduce power and i was just trying to start my day and go to work but it wont crank.
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SCHIBBY
Bought the EXACT same truck and am having the EXACT problems. Literally driven the truck a total of three times and two of which have been back to the dealership which is where is currently is. I want to swap it but theyre giving me the run around.
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Bought the EXACT same truck and am having the EXACT problems. Literally driven the truck a total of three times and two of which have been back to the dealership which is where is currently is. I want to swap it but theyre giving me the run around.
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Jeffrey
Took my GMC in for the same problem, I received two codes the first was P20F8 and second code ECM code P200A. See ECM. They are currently replacing the intake manifold. They are saying its becoming a problem for right now.
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Took my GMC in for the same problem, I received two codes the first was P20F8 and second code ECM code P200A. See ECM. They are currently replacing the intake manifold. They are saying its becoming a problem for right now.
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TakeDeadAim
I've owned mine for 6 mos now. 12k on it already, pulled all sorts of stuff from the midwest to OUT west. Not one issue and runs like a champ. The local dealers cannot keep them on the lot. I had to order mine.
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I've owned mine for 6 mos now. 12k on it already, pulled all sorts of stuff from the midwest to OUT west. Not one issue and runs like a champ. The local dealers cannot keep them on the lot. I had to order mine.
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