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  1. mattbta

    Solved: Headlight switch parts inside - brass circle? Where does it go?

    Howdy. A while back, followed this thread to clean the contacts on my headlight switch: https://www.tahoeyukonforum.com/threads/fix-headlight-dimmer-switch-not-replace.131439/ Dimmer started getting wonky again, so pulled it to clean and put down a layer of grease. Stupidly wasn’t paying...
  2. mattbta

    AC belt size or part number?

    Decided to replace AC belt and tensioner since I was experimenting with serpentine belt sizes for my Mechman 240a alternator. 2004 Tahoe, CJ2, auto front/rear HVAC. Delco part finder pointed me at...
  3. mattbta

    Good HVAC Gauges?

    Last summer, had to the low side port replaced, then it stopped cooling and had the high side replaced. In between each, I ordered these to check pressures myself: https://www.amazon.com/gp/product/B07CZB3P4X but they wouldn't fit or I couldn't figure it out so returned them. Fast forward to...
  4. mattbta

    Torque Convertor Shudder

    Howdy, all. 2004 L59 RWD with 3.73's and 168k miles, only towed once at 107k. I drive like a grandpa but didn't do proper maintenance on the trans. Last year (<1000 miles ago) had a fluid/filter swap done when the rear main was done. Experiencing what feels like a shudder on the 1-2 shift at...
  5. mattbta

    Good grease gun?

    I had a cheap “greasetek” from Amazon that is a leaky pos that I decided to toss. Anyone have recommendation on a good one that is easy to get on/off the zerks and doesn’t leak? This one had a flexible extension that seemed handy but the connection to the fittings would often get stuck. Not...
  6. mattbta

    When your new shop puts on the wrong tailshaft seal

    New shop down the road (within walking distance) put a rear cover gasket and rear main seal on for me last week. They called and said that they may have inadvertently damaged the tailshaft extension housing seal and were going to put a new one on. Score! I like honesty. Picked it up and...
  7. mattbta

    Paint correction product?

    While my Escalade roof rack is being painted to match, I've got the original Tahoe LT rack removed. There's some light oxidation on the paint, a little cloudy. Would like to make a few passes before putting the Esky on to get it in shape. I understand I'll need a DA polisher, but what...
  8. mattbta

    Fuel pump noise?

    2004 5.3 Flex. 166k miles. Truck sits quite a bit and gets driven one time a week if I'm lucky. For the last several months I've been running e85 in it...I like the power! It has begun taking quite a lot of cranking to fire. Lately I will "prime" the pump a couple of times, and then it...
  9. mattbta

    MBEC help -- back plug

    I'm trying to put in footwell lights in my 04. I found this post from 2014 that shows a pin location on the back of the MBEC. https://www.gmfullsize.com/threads/installing-footwell-lights-in-03.104799/post-5720705 I've removed all the plugs on the front and rotated it around, but can not...
  10. mattbta

    Solved: Another what is this part thread...?

    Had to change my battery yesterday. This was underneath the old one. Doesn't look super familiar to me but I didn't change the old one last time as I was in a rush. I have zero clue.
  11. mattbta

    Coolant pressure test -- acceptable bleed off?

    Is there such a thing? Trying to determine if I have a problem with my second set of refurb heads. Got a pressure tester and put it on after sitting overnight in the garage. Left it on @ 15 psi for 24 hours and it was down ~3/4 pound. After 48 hours, it was almost 2 pounds down, but weather...
  12. mattbta

    Which oil pump?

    2004 L59, 164k miles. Idle oil pressure has been getting lower and lower, now around 30. When I was replacing the heads due to a crack, I did the o-ring again. One of the refurb heads cracked in less than 500 miles, so the top half is torn apart waiting on that to come in. I figure at this...
  13. mattbta

    Passenger AC -- not as cold (but not hot)

    Hi, all. 8 years ago I had the one side hot the other cold with the A/C on, so I replaced driver blend door -- the one that you remove the hush panel and it's in front of the center console way back there. Ice cold on DS. Now I have an odd problem. The passenger side doesn't blow nearly as...
  14. mattbta

    Hwy panic stop -- rears locked up

    Had a panic stop moment yesterday on the highway and when I stabbed the brakes the rear tires locked up and gave quite the squeal. I am confused because it didn't seem like the ABS kicked in at all....the pedal didn't give the usual feedback that I'm used to on ABS. I have two years on Wagner...
  15. mattbta

    What is this noise/clunk in my drivetrain? Slip Yoke?

    This noise started about a year ago, usually only noticeable on large dips at highway speed. Over time it has grown louder and more prominent with increasing occurrence. Now I get the noise over surface streets at 30-40MPH when there are big cracks or dips. It is easily reproducible on speed...
  16. mattbta

    Ball joints (and arms) -- OEM or other

    Been fighting steering issues on my stock, not lowered 04 2WD and have taken it to various shops. Finally took it to a frame/alignment specialist and they say I need ball joints and a gear box (I figured that was coming, but besides that, BJ's and hubs -- everything else is new within the last...
  17. mattbta

    Solved: What is this plug - driver footwell area

    I swear I've read about this before but can't remember now and I'm not getting any hits via search. I installed new upper/lower ISS today and had to take my adjustable gas pedal off to get clearance. Buttoning it back up, I noticed this plug hanging down, which I don't remember unplugging. It...
  18. mattbta

    Steering position sensor part number?

    I'm replacing upper/lower ISS and steering bearing. When I got under the dash to start, I noticed my truck has a steering position sensor. I have read that these can go bad and cause some of the symptoms I'm noticing. Went ahead and unplugged it and drove around yesterday and it definitely...
  19. mattbta

    Wire CIG lighter to RAP?

    Been going through some steps to get Bluetooth on my 2004. Installed the aux adapter kit and then added a kinivo BT module. I know our CIG/aux outlets are hot all the time and I want to rewire one to RAP, so the BT won't drain my battery. What are my options and how do I accomplish this as...
  20. mattbta

    Possible to put newer Bose head unit in '04 Bose?

    I'm sure it has been asked and I went ten pages deep without seeing much. Got a 2004 with Bose 6 disc and rear DVD. Is it possible to swap out a newer (GMT-900) factory head unit (hoping to gain maybe bluetooth or at least aux) for my current one and retain things like steering wheel...

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