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rpmdiag
rpmdiag, Tech and instructor
Category: Transmissions
Satisfied Customers: 6847
Experience:  Since 1975
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Trans shifts to D1 but does not move motorhome. Parking

Customer Question

Trans shifts to D1 but does not move motorhome. Parking brake is off. It Will shift to RR and move back but not forward.
Tried to bring up codes by pushing arrow buttons but nothing shows.q
Submitted: 2 months ago.
Category: Transmissions
Expert:  rpmdiag replied 2 months ago.

Hi, I'm Ron and I will be helping you today.
Stand by for a moment while I prepare your answer.

Expert:  rpmdiag replied 2 months ago.

Here’s the sequence of events I follow:

Check fluid level and color.Make appropriate repairs.

Check shift solenoids with a scan tool in bidirectional mode if applicable. Shift solenoids are inside the transmission and this is the easiest way to check them. If you can't access it this way, then we need to run some electrical tests.

Drop pan and inspect for excessive metal shavings inside pan.

Check valve body and clutches visually.

Hopefully you may not have to go this far, maybe you just were a bit low on fluid.

Expert:  rpmdiag replied 2 months ago.

Hi, I'm just following up with you to see if you have any more questions.
Thanks, Ron

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