I had the aux brake pump added about 2 months ago. In the process they broke one of the pins on the wiring harness. (leaving me w/o a my car for a wk) Well after about 3 weeks the brake problems came back, although it is not every time like before and does go away alot quicker. So my question is, is this common for it to come back or is it as I already know does my dealer suck? I am just worried to have them mess w/ it anymore. Reason I am asking now is because our wiring harness just came in today finally and so it is going back to the shop to finish the fix.

 

No it should not come back. Sounds like a leak where they spliced it?

Make them fix it. To this point I have never had it come back.

 

My fix has been 100% since the retrofit. Hope you get it sorted out properly.