Cold weather disappointment and frustration! - Page 2 - Chevy and GMC Duramax Diesel Forum

2011+ LML Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

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post #11 of 48 (permalink) Old 01-14-2013, 02:09 PM
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Im betting fuel gelled. Im truck started I cycled the glow plugs 2x & started just right. If it was fuel gelling do add some anti gel additive.


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post #12 of 48 (permalink) Old 01-14-2013, 03:02 PM Thread Starter
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I went home about 4 hours later (heater plugged in) and it stumbled once and then started up. I don’t believe it was fuel just the engine not wanting to stay running once the initial kick started. Really weird if you ask me. All my Fords would start without plugging in at much colder temps and it sounds like you guys are too. They would run rough for maybe 5 minutes at the most ever but after that they were fine.

I agree that 9 degrees should not be a problem. I’ll leave it unplugged tonight and see what happens in the morning.
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post #13 of 48 (permalink) Old 01-14-2013, 04:34 PM
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Glad you got it started. I'm amazed how many people on here don't plug in there rigs. I have mine on a timer so it comes on 2 hrs before I leave, the glow plugs don't even come on and it warms up much faster. Extend the life of the glow plugs and possibly engine? No brainer for me.

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post #14 of 48 (permalink) Old 01-14-2013, 05:13 PM Thread Starter
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Originally Posted by D2DAMAX View Post
Glad you got it started. I'm amazed how many people on here don't plug in there rigs. I have mine on a timer so it comes on 2 hrs before I leave, the glow plugs don't even come on and it warms up much faster. Extend the life of the glow plugs and possibly engine? No brainer for me.
I have a new truck that I have no experience with and now no confidence. I want to know that it is going to crank in my driveway under normal cold conditions, not when I am out in the middle of nowhere hunting, skiing, on the road towing or parked at the airport for several nights.

I believe I was told the truck would crank down to -20 without issue. 9-10 is a long ways from -20.

Once I have confidence in the truck I don’t mind plugging it in when it gets really cold, but it never gets cold enough not to crank in Denver. If it does not crank in the morning it will be towed to the dealer. I am not messing with a truck that won’t crank when it is well above its cold crank specifications or other brands I have owned.
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post #15 of 48 (permalink) Old 01-14-2013, 06:02 PM
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Collimare, your truck should definitely not need to be plugged it when above 0*F, as others (and your owners manual) have said.

Since it it is new, the dealer should be helping resolve this issue.

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post #16 of 48 (permalink) Old 01-14-2013, 06:28 PM
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It could still be a fuel issue. When you plug it in there is a fuel filter heater that comes on and may have ungeled the fuel in the filter.

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post #17 of 48 (permalink) Old 01-14-2013, 06:29 PM
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On myy 3rd winter with the lml. Have never used block heater. It is still curled up under hood. ~18c this morning. I suspect poor fuel. Dealer will help.

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post #18 of 48 (permalink) Old 01-14-2013, 06:42 PM
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Im gonna say fuel issue also. I never plug in my truck. When its super cold I cycle the key a few times and never have a problem.

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post #19 of 48 (permalink) Old 01-14-2013, 08:35 PM
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I don't have any problems starting my 2011 lml and I don't plug it in and it gets down to -7 at my house. Be careful where you get your fuel though. Sometimes when you bargain shop for fuel you end up in these types of situations. A buddy of mine bought fuel at a store that he doesn't normally go to because it was cheap and had the same problem as you and had it towed to the dealer and there was water in the tank. After pulling the tank they pulled about a gallon of water from it he may have shaled the motor and he's having to fight GM over the bill.
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post #20 of 48 (permalink) Old 01-14-2013, 08:43 PM Thread Starter
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I did buy from a station that I normally do not buy from as I try to always put Shell in but did not have time last tank so I have decided to give the truck the benefit of the doubt and plugged it in. What winter fuel conditioner do you recommend? It is also about time for me to change the oil and I am going to put synthetic in now that I have about 10K on it. I always do this after break in as it makes a big difference in cold cranking. Thanks for all the input.
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