the overdrive light in my van is flashing and the tranny is a little rough
Nov 26, 2010 at 4:10 AM
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MMPRINCE4000
✓Experienced Mechanic
8,548 POSTS
It indicates a problem with trans, have codes read at most autoparts stores for free.
Nov 26, 2010 at 4:51 AM
WRENCHTECH
✓Experienced Mechanic
20,760 POSTS
I'm not sure you'll find an auto parts store capable of reading a trans control module. This usually requires a professional scan tool. I suggest a trans shop to get an idea where you stand.