2003 chevy s10 wont downshift

10

Asked by Jul 02, 2009 at 03:48 PM about the 2003 Chevrolet S-10 2 Dr LS Standard Cab LB

Question type: Maintenance & Repair

4.3 v6 and wont downshift going up hills on the interstate. goes through all other gears just fine

3 Answers

505

See if there is a vac mod on the tranny. Maybe that or a vac line

10

You were on the right track. Actually the catalytic converter went bad and wasn't getting enough oxygen to the engine or torque converter.

1 of 1 people found this helpful.
70

clean throttle position sensor

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