By Tyler Sywyk
Hello, I own an 08 GMC Sierra 2500HD Diesel Crew Cab Long box pick up, it's throwing a display message, but not giving me any codes, the message is service trailer brake system, it used to show that message and then I had it brought into the shop the second of July and they replaced the trailer break relay in the rear, had to change out some eye connectors at the fuse box. They also replaced the fuse. Worked great again from then to about a three weeks ago and this was including an 11 000km trip towing the trailer, it brought the message up again. The truck had been sitting and driven every once and a while, a bit of idling this winter as well, but no towing. so I replaced the fuse because it looked blown. After replaced it work fine again no more message thought maybe wet weather caused it. Now unfortunately now again yesterday I went to use it again and the message comes up, it was just recently used a few days ago and no message, today we have some dense fog as well as some rain. I think it only happens when it rains heavy or fog.. I am not entirely sure on that though. I replaced the fuse in the fuse box for the (ITBC) The one I changed out before to get it to work, and this time it did not work and nothing changed on the dash message still up. I can more than easily replace the Relay without any issues, but I don't want to do that if it is just going to create the exact same issue. Any ideas on what might be causing this?
Also on a side note, whenever I start the truck it puts out grey smoke until it has warmed up passed about 79-85 degrees Celcius (174F-187F), which is normally after driving for about 5 mins 10 at most or letting it high idle until that temp, it also does smoke when driving until warmed up. it never puts out black or blue smoke. Its grey, just as it is on a cold day in a gas engine. today we've reached the highest temp lately about 8 degrees Celcius and it still smoked. It never did this in the summer or fall just after it got cold. So I am just wondering if this is normal or if something is causing this to happen when it shouldn't be. Could it be something as simple as it needing an oil change? Or also does it need a long drive at highway speed to deal with burn cleaning the DPF? I am a new owner to this pickup, and it is my first year with it so I am new to diesel's and don't know what to expect from them.
Any help Is much appreciated!
Have not been able to find a site where you can submit your mods and have them post it without buying their products or going through some ridiculous process. I have created: https://thegaminggalago.wixsite.com/mycompletemodlist
to get the ball rolling. Please share it amongst people on here and in your car clubs, it would be GREATLY appreciated!
By LD Dirty Shame
My Yukon has developed a temperature control problem with the heating and cooling settings. First issue is when A/C is not needed. Since it's winter, I can start my drive, typically it's 30 or 40 degrees outside, wait for the engine temp to start to rise and ask for 74 or 72 degrees from the previous days drive. As soon as you hit or turn on the FAN control knob, A/C selection comes on.....but I don't need it. It's 30 degrees outside! Took it to my GMC dealer, and he can't find any "error codes", nor can he duplicate. So I provide him with 3 or 4 videos from my iPhone. It clearly shows the engine temp starting to rise and able to give "warmer" air than the outside air, and outside temp on the touchscreen at say 34 degrees. A/C selector clearly comes on when pushing the fan ON and either vents or floor selected for my air. Been to him twice. Then, it has progressed to really HOT air coming from the vents or floor, when set to 72 degrees. I set a little temp gauge in the vent and when asking for 72, its pumping out over 100 degrees. Sent him a video of that. Drove down to the dealer on a half hour drive with it set this way, and showed him...."yah, that's sure hot" is his reply. Now, on longer trips of 3 hours last weekend, we are either too hot or too cold. One point we had 69 dialed in on both passengers, feet were cold at 69 but dash vents with my thermometer was near 120. Settings never seem to track. You can set it for any temp and it starts out comfortable, but slowly starts to get hot, then you crank it back lower and then we are cold. He has had it again for two days and can't duplicate on their test drives. Says he can't do any "warranty work" without error codes being generated. Oh, and the other really strange thing.....three months ago, my rear window completely blew out. Exploded like it had been shot out! And we were driving down a road at 15 mph. Course, it has a REAR DEFROST button on my dash, where all this problem is occurring NOW. Wonder how I can help my dealer find a solution? Yukon has only 18k miles and purchased new from this dealer.
I have a 2015 GMC Sierra SLT 5.3 with 10,500 miles. Within in the last month the engine has started to run rough miss firing, pinging, knocking etc.... Brought it in to the service center and they replaced the fuel pump, intake gaskets and changed the oil due to fuel smell. Pick it up, runs great for 200 miles and I start having the same issues. Bring it back to the service center and now they say there is a large quantity (8oz) of water in the oil that is causing the is miss fires, ticks, pings, clunks. Their "fix" if you want to call it that, was to just change the oil. Nothing else. I'm not a mechanic by any means, but I'm also not fool under the under the hood. I understand condensation build up with hot and cold but 8 oz on water in 200 miles in the oil? I'm not buying it. The dealership is playing this off as "Normal." I know this is completely bogus. Any thoughts, suggestions other than complaining and telling the dealership how ridiculous their answer to the problem is. Oh and the kicker! I had to pay for the oil & filter change because of the water in it.
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