broke service engine light how to repair on 1999 Chevrolet Astro

1999 chevy astro van, failed inspection due to catalydic converter and service engine light. Converter replaced have taken to 2 dealer ships to have service engine light repaired, Told they don't know how to fix, have never had one go out. Suggested change complete instrument panel at a cost of 600.00 no quarntee will correct problem. Any ideas? Any and all would be appreciated

Asked by for the 1999 Chevrolet Astro
1 answer
It's hard to understand how two GM dealerships couldn't find the problem. Take it to an independent GM specialist and get it fixed.
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