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  1. Matahoe

    Loosing coolant. Underhood coolant smell

    I'm sorry. When you said "part number is Cold Case GMT569A" I was expecting a GM part number. Can you please rephrase that? I also have a local dealership gmpartsnow.com. It's Berger Chevrolet in Grand Rapids, Michigan. Largest Chevy dealer in Midwest afaik. They give me a veterans discount and...
  2. Matahoe

    Loosing coolant. Underhood coolant smell

    Hmm interesting. But I replaced the tube and o-rings some time ago when I did the head gaskets. The back side of the intake didn't have a tube...just a couple block offs which I replaced the o-rings as well. I think the best course of action is to just black light the whole system, pressure...
  3. Matahoe

    Loosing coolant. Underhood coolant smell

    I think you're referring to a radiator pressure tester. I don't have one. I looked at the Mityvac kits and they are rather expensive with all the attachments and such. Last time I used a rental it looked iffy and abused by previous renters. I didn't trust it...but it did show it leaking down if...
  4. Matahoe

    Loosing coolant. Underhood coolant smell

    Wow! 270k miles. I wonder if it had been replaced before...say maybe around 175k? That's a long time. But I guess with proper coolant changes anything is possible. Never seen that with my previous 5.7 or 4.3 liter engine radiators. You're probably right. Time to invest in an appropriate...
  5. Matahoe

    Loosing coolant. Underhood coolant smell

    Your knowledge of ancient Greek is impressive. I've done my fair share of replacing parts without adequate diagnosis. Can you please expound? Thanks!
  6. Matahoe

    Loosing coolant. Underhood coolant smell

    It has 202,000 miles on it. Bought it one owner in 2015 with 130K. The only thing rusted out is the rocker panels, torsion bars, a bit of the frame and all brake lines (that's another project). It's been babied and garaged most of it's life but I have towed an 8000 lb RV and 4000 lb boat about...
  7. Matahoe

    Loosing coolant. Underhood coolant smell

    Yeah that. I put my nose around the driver's side tank and that's where the smell is strongest. Looks like it might be time for a new radiator. But I'll check a few things before splurging. Any chance the coolant got into the oil or transmission fluid? I hope not. Thanks
  8. Matahoe

    Loosing coolant. Underhood coolant smell

    Guess I can remove the radiator, block off some ports and pressure test it. It's due for a check and fin cleaning anyway. I think it's the original from 2005. I do know that the water pump was replaced about 10 years ago when the original owner had it replaced. I'll put some ultraviolet dye in...
  9. Matahoe

    Loosing coolant. Underhood coolant smell

    I was working under the hood today and noticed my coolant reservoir was halfway empty. It was fine a month ago when I added a few quarts. It was just below the line about 1/2 inch. I also have been smelling hot coolant around my radiator shroud/ front of engine area. I don't have any leaks on...
  10. Matahoe

    Rattling front right wheel well

    Hey everyone I'm hearing a metallic rattling noise coming from the right front wheel area that seems to be getting worse. The sound only happens when going over small bumps in the road. Seems to be suspension related. Im going to jack it up the frame in that area and see if anything is loose. I...
  11. Matahoe

    2003 Yukon 5.3L SLT 4WD Brake line replacement

    Oh crud. I bent one of the lines to the rear too many times it seems and the line cracked. Should have used a line bender tool I guess. Any way to buy just a single line from GM? Or just get some bulk line and cut out bad area of line and make a few flares and patch a new section in? I have a...
  12. Matahoe

    2003 Yukon 5.3L SLT 4WD Brake line replacement

    I'll try. The problem is releasing and fastening the lines in the support clips. Also northern states you need to scrape off rust scale on frame which can contact new lines thus causing abrasion and leaks again. Should, as always, depend on where you live.
  13. Matahoe

    2003 Yukon 5.3L SLT 4WD Brake line replacement

    Nice tips. I have cut out a few olld lines and looked at clearance. Due to lines being pre-bent I think I'm going to remove fuel tank for ease of routing and fastening to support clips. Overall should save some time and frustration. Much less frustrating to remove fuel tank. Especially if you...
  14. Matahoe

    2003 Yukon 5.3L SLT 4WD Brake line replacement

    In the same boat with you on my 05 Tahoe. Went to start it the other day and the brake pedal went to the floor. Got out and found brake fluid dripping at rear drivers side wheel well. I found after a brief inspection that all my brake lines are encapsulated in a scaly, rusty mess. I'm guessing...
  15. Matahoe

    2005 Tahoe LT Autoride Traction Control

    I have been using only Timken or GM OEM hubs but will go with Carquest. NAPA or big box auto store brands if I plan on selling the vehicle. My online service manual mentions the hubs are now 4WD style and are made so they don't require the CV axle to hold the hub together anymore. I think they...
  16. Matahoe

    Odd misfire at idle on 5.3

    A running datalog using a OBD2 scan tool is probably the only way your gonna catch the problem in the act. That is If you know what part to monitor and include in the running log. It sounds like we don't know specifically anything at this point. Some of the sensor tests won't necessarily prompt...
  17. Matahoe

    Odd misfire at idle on 5.3

    I wouldn't think your throttle body would be dirty much at your mileage. Has there been anything aftermarket added like a K&N air filter or any maintenance under the hood since 0 on the odometer? A bit of back story helps.
  18. Matahoe

    Odd misfire at idle on 5.3

    Proper use of reputable fuel and oil additives does not void car warranties. Consumer protection is afforded by the Magnuson-Moss Warranty Act.
  19. Matahoe

    Odd misfire at idle on 5.3

    Given the year of your vehicle I would start simple. Always start with simplest repair first. I would run a few bottles of fuel system cleaner like Berrymans B-12 Chemtool. It solved my intermittent rough idle. Sounds like leaking injector(s). Now the reason it runs fine off idle is because...
  20. Matahoe

    2013 Chevy Tahoe MagneRide With 3inch lift

    From what I understand...the magnaride uses the ride height sensors to determine voltage at each shock valve that the magnetic fluid (Ferro fluid) moves through. So if your torsion bars were cranked up or down, or changed out... or you installed aftermarket hubs or control arms. Any of...
  21. Matahoe

    Michelin tires 4 for sale

    sold
  22. Matahoe

    Michelin tires 4 for sale

    I have 4 Michelin light truck tires for sale. Only used a few years with very little 7,000 or so miles on them. Deep tread and great winter traction! I was going to use them towing but I don't use my Tahoe to tow so selling these. Michelin Defender LT265 70 R 17. All four in very good shape...
  23. Matahoe

    Drop in oil pressure

    The oil filters are interchangeable with respect to having same thread and width. The PF-61e just being longer and having more filter area.
  24. Matahoe

    Cooling Issue

    Doesn't overheat immediately? So it is overheating? That's strange.... What are your temps reaching? Sounds like low speed efan isn't working or turning on. Highspeed efam turns on around 230F. Don't go by the dash temp gauge. Turn off AC so the efans don't come on and park it running at idle...
  25. Matahoe

    2005 Tahoe LT Autoride Traction Control

    Had to sand my axle as well. There was tons of rust on the rear left and right axle tubes. Pretty obvious that putting new sensors in place with no rust removal would make the air gap bigger. In effect would make the problem worse not better.

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