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  1. 0

    Steering box leaking - what's the fix?

    Hi all, I have a 2003 XL and it appears to be peeing power steering fluid out of the top of the box, just forward of the lines (no it's not leaking out of the lines). Appears to be right out the top of the box where the worm gear can be adjusted. Is there an easy fix for this without removing...
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    Slow 1-2 and 2-3 shift?

    Hi all, Under light throttle conditions, I notice my 03 xl will have a somewhat sloppy, slow shift from 1-2 and 2-3. It feels like it decides to shift, does a partial engagement, and then drops into gear maybe a half a second to a second later. Almost like it shifts twice. Grab and then...
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    Oil pressure Sending unit - best aftermarket supplier?

    HI all, I replaced my oil pressure sending unit probably 1000 miles ago. Today I noticed it was absolutely pissing oil out the bottom of the truck. Luckly I caught it before it pumped it all out. We're talking a pancake circle in 10 seconds of running. Anybody have an idea who makes the...
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    Brake controller wiring?

    Hey guys I have an 03 Yukon xl base model. 5.3 4x4. I am looking into installing a trailer hitch. I noticed a 4 wire setup coiled up in the frame rail, which is a good start. I wonder for a brake controller if there is some pre-existing wiring or if it has to be started from the battery...
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    Change your power steering fluid!

    Hey all, Word of advice, change that power steering fluid. My power steering cooler failed, so I replaced it. Decided to flush the power steering system while I was at it. Extracted the fluid that was left in the reservoir and put some fresh in, then pulled it out again. It was so brown and...
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    Trans Temp from OBD?

    Hi all, I have a remote, bluetooth OBD scanner that I use on my '03 Yukon. It is apparently an ELM327 module, and I have several apps I use with it: Torque, AlfaOBD (demo) and CHevroSys. I wonder, is there a way for me to pull in the trans temp from one of these programs? I really don't...
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    So you want to buy an old Tahoe/Yukon?

    Hey guys, About 3 months ago, I bought a 2003 Yukon XL to use as a 3rd vehicle. Over the course of those couple months, I have driven it regularly to work the bugs out. I thought I would post my list of findings so the next guys could have an idea what to look out for. One note: this truck...
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    0300 while driving today

    Hey all, Thought I had this old bird ironed out. Got about 60 miles into a 5 hour drive today and of course it chooses today to throw the p0300 error. No stored code. Running though, shifting hard. I have read things talking about crankshaft position sensors, camshaft senosors as well as a...
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    A couple of tips for using exhaust manifold clamps

    As you guys are all aware, the exhaust manifold bolts on the LS motors are notorious for failing. On my '03 3 of them were gone, two on the rearmost port on the driver's side, one on the rearmost of the passenger side (what great luck!). I decided drilling them out was beyond the amount of...
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    Recommendations for a touch screen apple carplay head unit with backup camera function

    Hi all, I have a 2003 Yukon XL, SLE. Very basic, no steering wheel controls, no on star, no bose system. I would like to add a head unit that I can use for navigation, apple carplay and add a backup camera to. I note that some things I read metion that a double din setup requires an...
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    Part name for clip on back of second row seat

    Hi all, Trouble finding a part name or number for the small plastic spring loaded clip on the back of the second row seats. It holds a hinged panel in place that extends to cover the foot well on for the third row when the seats are laid flat. Any idea what this thing is called or where to...
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    Fog lamps not functioning

    Hey all, I replaced the destroyed fog lights in my 03 Yukon. They still do not function. Fuses are good, swapped in a known good relay. led indicator comes on the dash when the fog light button is pressed. Is there a common fix for this? I have read a couple of common complaints but never...
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    Windshield washer leak- 1 bolt fix

    Hey guys just a hint in case you need to replace your leaking windshield washer pumps. I had to do mine but the bolts holding on the battery tray are pretty rough and it was going to be a fight. I ended up taking off the front left tire, popping 3 or 4 push clips on the inner fender well and...
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    Folding mirrors don’t fold?

    Hi guys, Have a 2003 Yukon xl. It has the folding mirror option and I just replaced the mirrors because the old ones were pretty crusty. The old ones weren’t folding anymore either. Installed the new ones which are far nicer, but they still don’t fold.I press in and right on the selector and...
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    Recently bought an '03 Yuk XL - Service 4WD

    Hi guys, I recently picked up an 03 in really good shape. Has some issues and I have enjoyed putting it right. One thing that crept up the other day is the dreaded "service 4wd" message in the cluster readout.. Seems to come on intermittently, but then after the truck is shut off and left...
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