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  1. oldchev

    Tahoe horn

    My 2004 GMC Yukon horn quit. Not a PPV, but ... I watched this video. It worked! Really straight forward.
  2. oldchev

    AC not blowing cold air

    Yes, need to know what year/model we're talking about. Right off hand I'm thinking actuator(s). Does the middle and left blow hot while right blows cold?
  3. oldchev

    Rear differential and Fel-Pro gasket

    I used Lube Locker " LLR-G850 "on my 2004 GMC Yukon Denali. That was excess of 5 years ago. Still completly dry.
  4. oldchev

    Long crank - continues with key off

    Yesterday 9/08/23, I replaced the CMP with GM19420911. Instantly started. It now starts first time, everytime, with the GM sensor. As stated by several on this forum, the other types of CMP sensors could be faulty. Using the correct GM sensor eliminated my issue. BTW, it never had a start...
  5. oldchev

    Long crank - continues with key off

    2004 Yukon Denali Update: Today, I used my boroscope to look at the pigtail and connector to the CMP. The CMP bolt bolt looked pretty clean compared to the other parts around it. That said, I re examined the invoce on the trans work including the pigtail connector. The Ah Ha moment occured when...
  6. oldchev

    Camshaft Position Sensor / P0013

    Update: I used my boroscope to look at the pigtail and connector to the CMP. The CMP bolt bolt looked pretty clean compared to the other parts around it. That said, I re examined the invoce on the trans work including the pigtail connector. The Ah Ha moment when I saw they stated replacing the...
  7. oldchev

    Camshaft Position Sensor / P0013

    Thanks to both of you guys. Today I responded to another guy having exact scenario as me. To date, I have done nothing. I used to go right after this stuff, but with increasing awkwardness of repair angles plus age related flexibility, these things tend to go wayward as far as "getting it done"...
  8. oldchev

    Long crank - continues with key off

    I have the same issue. Had to have the trans rebuilt last April. While out, they find the leaking main rear oil seal which we could see prior. They replaced it. Also found the camshaft position sensor wires baring copper. The insulation was gone. I asked and they said they can splice in a new...
  9. oldchev

    Struggling with this troublesome Denali

    If you are good at doing your own stuff, then work through the issues. I do and save $$$. My 2004 Yukon has had a plethora of issues, none of which I couldn't overcome, many using this forum for direction or ideas. I too have the servcie stability issue. Even with new hubs, it persists. The...
  10. oldchev

    Fuel Sender Unit Ohms

    Here's some more info. Not sure if same on '99 model but this info is out of my 2004 shop manual. This tells you what wire and where to find it to check. Let us know what you did or found out.
  11. oldchev

    Fuel Sender Unit Ohms

    Late reading this. Would this help?
  12. oldchev

    Best option for my transmission?

    This forum is a good place to start, with lots of advice. I use it frequently to see what others have done. Very recently I had my (2004) 4L65e rebuilt @278k miles. This shop was honest and with upgrades and converter was $3200. Depending on number of shops in your area, I think you can go to a...
  13. oldchev

    Camshaft Position Sensor / P0013

    Yes. Thats what it does. I'll look back at bolt with my boroscope camera to see if they "cleaned" the area. I have looked at ACDelco for my sensor. I'll verify with the local dealer to be sure it's the correct part number. I don't know why they'd do that but makes sense. Maybe they broke it...
  14. oldchev

    Transmission life on the early Hoes?

    The original question was how long will my transmission last. So, as one has already stated, that depends. Hard driving will surely take its toll. I am a very easy driver (to many’s disdain) and made almost 280k on my 2004 4L65e. On mine the reaction carrier shell splines stripped on the shaft...
  15. oldchev

    Fuel Gauge Inaccurate - SOLVED

    Further update 4/07/23: From the original post, Fuel Guage was displaying low reading faster than use. It "corrected" for a couple months then back to, or worse. My gallons consumed on the trip meter was accurate as each fill up corrosponded to the gallons used. So I went with that so as to not...
  16. oldchev

    Cam Position Sensor O ring

    What is involved for a "re learn"? Do you have to have a Tech2? The shop manuals (GM) don't say anything about such a process. I would love to hear the what and why for this. I would think (by old school standards) that stopping on #1 TDC and removing the CMP it would work.
  17. oldchev

    Replaced crank position sensor, vehicle cranks but wont start

    I buy a lot of parts on Amazon, but buyer beware. Do your research on part numbers. Their "fitment" search engine may say it fits or may not fit. I buy things that they say wont fit but do, because the GM dealer parts guy said thats the correct number. Also many sellers on Amazon are 3rd party...
  18. oldchev

    Camshaft Position Sensor / P0013

    Hey...Jumping on this older thread. I recently had my transmission (04 Yukon Denali) rebuilt due to broken reaction carrier (this had 276K on it). While trans out, the shop called to come look at some wires. The CMP (camshaft position sensor) wires were clean of any insulation with copper...
  19. oldchev

    Heater Hose "T"

    Good advice, however on 3rd radiator so far. Newest is 4 years. Seems radiators experiance O ring leaks at cooler lines. Various seeping issues elsewhere. For me, whether radiator or water pump or both, everything gets changed. Belts, hoses, T stat, coolant. Maybe overkill, but for the extra...
  20. oldchev

    Heater Hose "T"

    I need to do this. I have the rear heat so need the T fittings and have those GM numbers. I am trying to get the proper heater hoses from pump and reservoir tank also (besides radiator hoses). May as well get them all at once. After new trans last week noticed a larger coolank leak towards front...
  21. oldchev

    4l60e rebuild kit...so many options

    Reading the pain...my 2004 Denali AWD just "broke" yesterday. Bang, then loud whirring plus other noises. I limped home (25 miles) holding in 3rd. No reverse so suspect reaction sun gear shell. Of course that's the basic prognosis, until we see it, we won't know what else. This one has 280k on...
  22. oldchev

    High mileage Yukon

    1. Dealerships are used to the game. 2. That's the rust you see. 3. Caveat Emptor.
  23. oldchev

    Tpms

    I have a 2004. I found recently that this particular year has a one year only type of TPMS sensor. The place (Costco) installing my tires didn't have them. They were 20115 Shraders from TPMS.com. Costco put them on once I got them. Not sure if that is what you are looking for or helps. Costco...
  24. oldchev

    New here “04 Tahoe Z71”

    Hello, I have been searching the forums here for similar issue. I have a 2004 Yukon Denali (268k mi) and with increased frequency the ABS and service stability messages come on. The actual action has been (besides the alarm) the ABS light, Traction control light, sometimes accompanied by loss of...
  25. oldchev

    Fuel Gauge Inaccurate - SOLVED

    Update: After two full fill ups, the gas gauge reading is close if not at the standard reading. I have nothing to attribute this to. I have monitored the distance and gallons used, then on fill up (all the way) it corresponds with what actually was used and the gauge needle seems to be back to...

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