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Found 5 results

  1. This truck is new to me and it needs the cooling system flushed and the coolant replaced. The owner's manual calls for coolant that meet "GM Specification 6038-M". That spec is no longer supported and it NLA. After some research, I thought I was doing the right thing by getting... Prestone Antifreeze/Coolant GM Vehicles Dex-Cool CONCENTRATE *5 Year/150K Mile Protection* 1 Gallon (Part # AF888) which I plan to dilute, of course. But, upon seeing the jug, it says it is orange and specified for '95 and later GM models. I am on the wrong track? If so, what should I be using?
  2. Hey guys, Encountered a coolant leak at the heater hose quick connect fitting on a 2005 Tahoe. I had one of these snap last year on my ‘05 Sierra so it’s a pretty common occurrence on NBS models that are still on the road. I made a video of what I ran into while replacing the fittings that I think will be helpful to someone that needs to tackle the same thing. Let me know now what you guys think: Video / Replacing GM Heater Hose Quick connectors
  3. I purchased a 2015 GMC Yukon a couple years ago. We love the truck but have been having constant problems with it. Whenever the AC is on it shakes like Michael J Fox on a carnival ride when at idle. The exhaust stinks of antifreeze to the point whenever I get gas people comment on it. The dealership claims GM has never heard of these shaking or idling rough which I know is a lie. I have a 2016 Silverado and it doesn't have this issue(yet). The tech at the dealer claimed it is operating normally. He admitted that he smelled the antifreeze too. They claim that the catalytic converter is designed to smell that way. I have had this thing in the dealership 4 times and am getting sick of the lies. I told them to recreate the rough idle all they have to do is put the truck in 2wd mode and have the AC on. It generally happens after you have been on a the highway for a few minutes and then take an off ramp and have to sit at a stop. They claimed they couldn't reproduce it. When I picked up the truck they had put it in 4x4 mode and turned the AC OFF!!! I think they intentionally did that. I have a truck that is brand new and my wife is afraid to drive it. It likes to lose power in intersections and I am afraid that when I cross the road it will stop and I will be hit. I have a warranty on it but I can't get the dealership to admit there is anything wrong with it. I purchase new vehicles quite often and this will be my last GM purchase. According to GM I paid 74,000 dollars to have a truck that idles like a 30 year old truck with bad plug wires and it STINKS or anti-freeze.
  4. I am a newbie to this forum. I hope I can get some input for my issue please. I have had an 09 Silverado 5.3 for a couple years now. It has a slight coolant smell coming in the open window when I'm driving and when I stop(when hot). I have added no antifreeze, the level stays good and pressure in the reservoir. I cannot smell it in the cab when the window is closed and I can't see any leaks or coolant on the floor when I park in the garage. The truck has 50K miles. I am at a loss. Is it something I should worry about? Should I take it in to check gaskets etc? It seems to run fine?
  5. I have a Silverado 2500 6L WT. I put some green antifreeze in the reservoir and found out that it is bad to mix the green antifreeze with dexcool and thus needed to flush my coolant. I then did a coolant flush with only dexcool to get the green antifreeze out of my truck. All I did was drain the dexcool from the radiator hose, refilled the reservoir with water, ran the water through the engine, and then drained the dexcool from the radiator hose again. All in all, I drained the dexcool from the radiator hose three times (three intervals of flushing water through the engine). I DID NOT remove the drain plug to remove the dexcool from the bottom of the engine block. Did I get all of the green antifreeze out without removing the drain plug or do I need to do another coolant flush?
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