10/13/2026
Driver called saying his transmission went out. It wasnt the transmission π§
He told me he was driving down the road, the truck just stopped, and now it wont move. He was sure something was wrong with the trans.
I pull up and see long black skid marks behind the trailer. Right away Im thinking air leak.
Sure enough, an air line going to one of the trailer brake chambers had snapped off. With that line gone the trailer lost air, the trailer brakes locked up and wouldnt release, and the truck couldnt pull it. His trans light was coming on because the truck was losing air, so it looked like a transmission problem to him i guess.
Fixed the air line with a compression style fitting. Yes, I used a compression fitting so nobody in the comments cries about it π
Aired it up, brakes released, no leaks, and the driver was back rolling.
Drivers, if your truck suddenly wont move and you see skid marks behind the trailer, check your air before you call it a transmission.
Callout $100, labor $160/hr, parts on top. Same day pay. Cash, card, EFS or Comdata.
Want to learn how I diagnose calls like this? Its all inside my Skool community, Wrench to Riches. $20/mo locked in for founding members. Link in bio.
βSteven, All Pro