On Sun, 17 Feb 2013 09:28:49 -0600, dpb wrote:

On 2/16/2013 2:48 PM, Ed Huntress wrote:
...

I may have a better answer for which parts vendors (that's where the
SAE fasteners are coming from) haven't converted yet, and why....

The parts vendors are supply what the end-user specs; not the other way
'round. If it's SAE, it's 'cuz GM says so, not because some vendor
chooses to make it that way.

Well, that's the question: Why are they doing that? It's probably a
cost issue, and it may have something to do with the costs at the
vendor level -- tooling, inventory, testing equipment, or whatever.



And, these are holes/fasteners in the same assembly (the belt tensioner
subassembly/heater coolant intermediary flow passage between block and
hose connection) so it's not like one part is SAE while the rest are
metric--it's mixed on the same sub-assembly.