- Jun 8, 2002
- 03 50th Convert, 91 & 94 coupes & 96 Collectors
I'm currently having some mild engine work done on a 1978 L82. My mechanic thinks there should be a "vacuum switch"(maybe incorrect wording) in the thermostat housing. My local chevy dealer can only find the part for a 1979 & newer. I think my mechanic might be describing the part wrong, or maybe there shouldn't even be one. Any help...part number or correct name, would be greatly appreciated.