Question about 2002 GMC Yukon XL
It's possible that you don't have the correct replacemant lines. conpare the new lines to the old ones to be sure the threads and type of end are the same. If you line them up straight enough they should start with your fingers and screw in a ways. An open end wrench should work to tighten them but you may need to remove the bolts holding the unit on to get room to turn the wrench ( only move ti enough to get it done as you might break other lines. but if they do they needed changed anyway. It seems alot of GM's are rusting the lines near and at the unit. A crows foot line wrench can be gotton at a discount tool dealer like harbor frieght, but you have to buy a set. You can put the crows foot on the line and then turn it with a 3/8 extenstion. Regular mechanics that do this work all the time have these tools and you might consider having a pro do the work as bleeding the repaired system can be diffacult without all the right tools.
Posted on Nov 16, 2010
The fittings can be different sizes so you don't mix up the lines. For the most part the replacement lines are shaped to fit against the frame and will line up with the proper hole when you use the mounting clips that came on the truck.
If you have not already pulled the lines it helps to take a Digital or Polaroid photo before you start. There is a free website PDFOO.com which has articles about your lines and the module.
If you are making your own line the modern fitting is now double Inverted and it takes a different bending head than the older models used. Also if you are making your own line use the same diameter AND the most expensive part is the module. Whether store bought or home made, its best to start fitting the line at the module first.
You do not want to strip the expensive part. Attach the line to the module first so you can fight with the cheap to replace(secondary brake line) end last.
Posted on Nov 14, 2010
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Posted on Jan 02, 2017
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