overheating

  1. M

    New thermostate and water pump, and coolant temp sensor. engine overheating

    all coolant was drained before installing any parts, filled after. Hot AC running. (blows room temp) both heater hoses are hot and hard to the touch. both top and bottom radiator hoses are cool untill the engine reaches 240+ then they swell and feel hot to the touch. checked radiator flow by...
  2. 13UpInSmoke

    Random Misfire after Overheating 2013Yukon Denali 6.2L

    Ok so about 2-3 months ago I ended up overheating my truck while driving around town. Cant believe I didnt see it but is what it is. Previously I have swapped the radiator, upper & lower hoses, heater hoses & bulk head connections, water pump, thermostat & full flush. When I did all of that I...
  3. C

    2004 Tahoe Overheating

    My son's 2004 Tahoe LT (5.3 flex fuel) with about 320k miles has been running hot for some time - maybe 240 degrees or more in Houston traffic (its been 100 deg F + for a month now). Towing our boat is really a problem. A couple of years ago, our mechanic found the fan clutch was bad and we...
  4. J

    WTH is this weird, plastic thimble in Radiator Reservoir Hose?!

    I've had some issues with random overheating in my 2000 Tahoe. You can see the troubleshooting below, but it seems pretty clear, that the coolant is being blocked. I've flushed the radiator multiple time, and I'm still getting rusty, coolant water, with little, tiny brown bits coming out of...
  5. M

    Please help!!

    Long time lurker and first time poster. Registered for an account tonight since I couldn't find an answer that I haven't already tried. Backstore: 2006 Tahoe Z71 with 5.3 flex fuel 232,*** miles I just did head gaskets, water pump, thermostat, every gasket that I could think of while in the...
  6. Damuskoopthagreat

    2001 suburban saying its overheating but it's not

    I got a 01 5.3 suburban 2wd that has no cats. In the message center I continue the get a messege of check coolant temperature/engine overheating. The temp gauge will bounce back and forth but the engine isn't hot nor the coolant. When this happens it runs horrible, no power, no speed and...
  7. ZGHOE05

    Cooling system woes

    250,000 mile 05 z71 with an overheating problem. Started as a leaky fitting to the heater core so I dumped in the fix leak because I was lazy problem solved, so I thought a year went by no problems . Fast forward to a month a go and truck is getting warm in traffic (less than 15 mph)but never...

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