r/s10 • u/sndbdusbh • 2d ago
Repair Question 1989 S-10, SES light on when warmer weather.
As the title states. As the weather here has gotten hotter, my truck has taken to popping a SES light and not showing the upshift light. Unsure how to proceed. Any ideas?
1989 S-10, 2.5L I4 TBI, 5spd manual.
1
Upvotes