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Chevrolet S-10 Forum : “2003 chevy s10 wont downshift”

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buckeyeguy66
07/02/2009, 3:48PM
About: 2003 Chevrolet S-10 2 Dr LS Standard Cab LB
2003 chevy s10 wont downshift

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

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Jim1819
07/03/2009, 8:53AM

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

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buckeyeguy66
08/13/2009, 10:26AM

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

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