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  1. olliec420

    Hear water dripping after shut down. Air in coolant?

    So I've noticed that after I shut off the engine I hear a sound of water moving. I really noticed it since its gotten cold and I felt like the heater wasnt as hot as it should be and started to look in to it. The radiator and surge tank appear full. The temp gauge is traveling more than I'd...
  2. olliec420

    Service Brakes Soon shortly after replacing caliper

    Left (driver) rear caliper was sticking intermittently. Replaced it last weekend no problems. Checked other pads ok but right rear was done. Had been smelling hot brakes off and on for a while but couldnt pin it down til last weekend. So all good, riding great. On the way home today...
  3. olliec420

    98 Yukon oil pressure on the lower side and mechanical whirring noise?

    Does the 5.7 have the same oil pickup tube gasket common issue as the 5.3s? I ask because my oil pressure is good according to the 10psi + 10psi/1000rpm rule. But it is on the lower side, at or right below 20 at idle and 1000 rpms. At or right below 40 at cruising. A bit over 40 on cold...
  4. olliec420

    Two issues, coolant res level falling and ps rack leaking...

    Hey guys back at it. 09 Yukon LC9 5.3, 202k miles. Two problems today, for a while my coolant surge tank level has dropped an inch or two with every 500 miles or so. Haven't noticed any leaks but haven't worried about it because it was slow and I keep an eye on it. Day before yesterday I...
  5. olliec420

    09 Yukon 6L80 TC shudder every 20k miles

    At 168k trans let loose and had it rebuilt at a local trans shop with good rep. Afterwards there was some hard jerking decelerating, I took it back they did some tune and it was good. Then about 20k later I got rumble strip effect and they replaced the torque converter and did some more tuning...
  6. olliec420

    Rear air stuck on floor mode

    For about a year now the rear air in 09 Yukon SLT XFE has only been blowing out of the floor. It happened once when I disconnected the battery and then it started switching again after a couple days. Then another time it went to the floor and never came back. Im pretty sure the mode actuator...
  7. olliec420

    1998 Yukon low operating temperature

    Hey Guys, I have been reading here and I think I know what's going on now but looking for some clarification. So I got this thing from a guy who told me he had just put in a new radiator. The operating temperature is as shown in attached photo once warm. When I start it the temp creeps up to...
  8. olliec420

    98 Yukon 4x4 squeaky on cold start

    The 98 is doing great. Only issue (well besides the minor ignorable ones) is it has recently started squeaking on startup. See video. Anyone know what that is?
  9. olliec420

    Intermittent tick starting, what you think from the sound?

    09 LC9 182k, just started noticing a tick. Goes away pretty quick after warm up. What you say?
  10. olliec420

    2009 Yukon 2WD; New metal-on-metal sound from front end.

    So I got up this morning to go to McDonalds and its nice outside so I had the windows open. I get down the road and coming to stop and I hear a weird noise and wonder, is this coming from my car? I get to Mcdonalds and yes its definitely me. So I drive slow and i hear it. Like metal on metal...
  11. olliec420

    A/C evaporator replacement 98 Yukon

    So on my 98 (C60 front a/c only) I have been charging it up repeatedly since I got it. I knew the service port valves were leaking and I ordered them a while ago but I never put them in. Well I was going to do it some weeks ago but before I did I thought to myself I really outa get a leak...
  12. olliec420

    Oil pressure fluctuations at steady hwy speed and rpm. Ok?

    Please see the video in above link. Does anyone experience the same? By the way, new sensor, screen, galley plug, oil pan pick up o-ring, oil pressure release valve (in pan).
  13. olliec420

    Three random shut offs while slowing to a red light.

    So on my 09 Yukon I just had my 3rd random shut down while driving this year. Two times while I was slowing down to a red light. Pop in neutral and turn key and fires right back up like nothing is wrong. I read a while back that could be due to the battery cables (negative?) going bad and that's...
  14. olliec420

    2009 Yukon SLT XFE ride rough, body mounts?

    Quick back story, I bought this new in 09. Traded in 11. Another local businessman bought it and had it for 10 years. I told him I wanted it back when he was done with it. I bought it back in 21. Unfortunately his hunting camp was down some washboard clay road and beat the shit out of it but...
  15. olliec420

    Rear air acts funny after battery disconnect.

    A while back I disconnected battery for something and noticed the rear air was coming out of the vents by the rear evaporator. After a week or so it started working normal again. I also noticed that the DIC outside temperature reading was wrong for awhile too. Fast forward, I just had it in...
  16. olliec420

    09 Yukon rear window washer fluid sprayer

    Everything works on this thing except the rear window washer fluid sprayer. I can hear the sprayer motor but no juice on the glass. Yes there is fluid in the reservoir. The windshield washer on front works great. Anyone have any ideas?
  17. olliec420

    How do I know what transfer case I have? This is the only label I could find. 98 Yukon 4x4.

    Button has the 'Auto 4HI' button but I think its an aftermarket switch panel. I understood that the 98 4x4s with "Auto 4Hi" push button 4wd take AutoTrak II fluid. I bought the fluid but have been holding off changing fluid because I want to be sure I got the right stuff. Can I find the exact...
  18. olliec420

    "Honk" sound when stepping on the gas?

    Im surprised I haven't found any other posts about this when searching. I had a 97 Tahoe 4x4 in 2001 with 80k on it and when I hit the gas hard from a stop, it sounded like a honk from the back of the truck. Others heard it and would mention it, but I didnt think much of it. Figured it could...
  19. olliec420

    G80 code fluid change, additive or no?

    So in my 98 Yukon with G80 code, I have a rear axel seal leaking and am going to service rear end. Bearings, seals, fluid, gasket. From the AMSOil site, I have two quarts 75w-90 (ACD 10-4016) in my cart (ACDelco fluid, just using AMS site for amounts) but am conflicted if I need to order and...
  20. olliec420

    Low side service port leaking, bubbles of oil.

    So my a/c is leaking at least out of the low side service port. I am planning on fixing. I have the vacuum pump and gauges. Im going to replace the service shrader valves and pull vacuum and recharge. My question is how much (by weight) refrigerant do I put it in it? I have been unable to...
  21. olliec420

    98 Yukon 4x4 steering wobble at 50+

    I picked up this super clean 98 Yukon 4x4 off a guy. During the test drive I knew it was shaking but I was guessing a balance issue. I got it aligned and balanced and its still there. I watched some youtube and apparently its an issue with the steering. Which is fine, I expected to put some...
  22. olliec420

    Shifter cable bushing gone. New one or zip tie?

    First under carriage inspection. My neighbor has a lift and I put up the 09 today and started checking everything out. The shift cable was just hanging on as you can see below. A doorman new bushing is $19 and they have it at oriley, BUT I have a zip tie right here for free. Is there any...
  23. olliec420

    Rear Bump Stop for 2009 Yukon XFE?

    It seems this XFE thing throws me off in search of suspension parts. @915_Tahoe, would you be good enough to tell me if the rear bump stop for my XFE is 15039397? Vin is 9R218071. Thank you brother! I went to gmpartsgiant.com and it says that 15039397 IS correct for a 2009 Yukon 2wd but when I...
  24. olliec420

    09 Yukon Intermittent fan e-fans not running

    So the other day I went out and the a/c kept turning itself off. It was nice out so I put down the windows and was going to look at it later. Im about to get to the store sitting at a light and I notice the temp is over 210 (where it normally sits). I turned the heater on and when I started...
  25. olliec420

    PPV front strut replacement part

    So I have 09 XFE Yukon. It is dropped and inch or so like the PPVs are from the factory for “fuel economy” and stability. What is the proper correct length replacement strut for your PPVs?

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