First off welcome to Sunline Owners Club!! Glad to have you with us.
Now to your door situation. Yes I have had this happen once too... from this event foward, the door latches are on the "check list" before we take off in tow. Memory not as good as it once was.
I'm assuming you are referring to an interior sliding door, like between a bathroom and or a bedroom.
There are 2 ways pending how far you have to go.
First, lift the door up high in the center of the track then move it towards you and hook it on the track.
If that does not work...
At least in 2004, Sunline siliconed the door hardware up top shut to not come loose. On mine there is a white lever so to speak that is siliconed from moving. If you peal off that glob, them that little white lever releases the door and you can then push it up and hook it in the track and then swing the lever back in place. The glob is now gone for 2 years and it has not hopped off yet so I have not re-globed it back on.
If yours is made like this, it may help trying it.
Good luck and hope this helps
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
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