I can't easily find any info on this online..... you might look in the ATSG manual for your trans, links are in the faq section, I think.

 

1999 5.9 diesel. 400 miles from home towing light (3500lb) trailer. Check engine came on yesterday on short, empty trip. Tranny would start in second, but then shift fine. Drove 70 miles at 70mph, no problems. Seemed to run and shift fine today. Read and cleared code, all is fine but haven't driven far since. I know this is related to the pressure regulator/solenoid, but my question is: am I ok to drive it home with trailer tomorrow, and if so, if the code triggers again can I keep going? Thanks!!!

 

Don't try and pull a trailer from a stop in second gear.... if it doesn't wanna start out in first, pull it down manually, and upshift as needed.

 

Thanks. And, if while I'm travelling I get the
code again, can I continue driving as long as all seems fine, without doing any damage?

 

There is not much way to determine that no damage will be done. Manual shift, minimal load, make sure tranny does not get hot will go a long way to minimizing the possibility of damage.

 

Thanks for your input. An update: I did drive it home with the trailer after clearing the code. Ran O/D off in traffic and through biggest hills. O/D on on smaller hills and flats, averaging about 70 MPH. Ran and shifted like a champ, with no problems or engine lights since.