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97 allegro bay auto brake problem

rvgrammady
Explorer
Explorer
97 Allegro Bay 35' Chevy workhorse

My transmission sometimes in reverse locks up like I hit a wall and the auto park light comes on.

I have to go to park, drive, reverse etc. until i leave it in reverse for a couple minutes then the auto park light goes out, then i begin to back up sometimes it locks up again.

this only happens occasionally. two years ago i had two sensors or something replaced on the transmission. It happened 2k mi. later.

Since this only happens occasionally, two times this year after 10k miles. happens cold or hot. I've looked up p30 auto park and all seem to lock up when in drive.

help?

Gramma Dy
Northern Calif.
1997 Allegro Bay 35' Chevy
1998 Saturn SW2 Wagon, Automatic
Blue Ox Aventa II, Patriot Brake

"We'll be friends until I'm old and senile, then we'll be new friends."
1 REPLY 1

newman_fulltime
Explorer II
Explorer II
Sounds like the ugly green switch is acting up its the pressure switch on the pump and Theresa relay that burns that causes this