Idling engine while towing questions

just read your post and I am having about the same problem as you. Had Remco lube pump installed in toad in 2009- towed for 3 yrs w/no problems. Last yr had a car fire due to leak in the lube pump line. Had the car towed to Chevy dealer who installed new line. 2 days later, line came off while driving down a city street & left all our trans fluid on the pavement. Tranny quickly ran dry & car refused to move. Had it towed to Chevy again for repair. Then 3 mo later took car to same dealer for a hole in a trans line & had all the old original trans lines replaced. This spring we had a leak (hole) again & same garage replaced line. Last week- another leak (tear) & again they fixed it w/new line. 2 days later same drill w/all fluid out in street & car runs dry & stops. Towed to same Chevy dealer. The hubby called & demanded to talk to the tech- who said that first repairs were made with what they had in stock- which was gas & vacuum line. We were told that this time they had purchased proper high pressure lines & replaced all lines w/dbl clamps. Fun & games- all our trans fluid is now out on the garage floor & driveway. We hooked it up to the motorhome to tow it to a bigger dealer in a bigger city & the lube pump pumped it everywhere. Called tow truck. Can anybody answer if the pump can over pressure the line & cause this? Or how can a dealership be this incompetent? We would appreciate any insight anyone can give us.