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- - What's This Hole For? (https://67-72chevytrucks.com/vboard/showthread.php?t=751936)

BHTH	12-05-2017 03:17 PM

What's This Hole For?

I've got a 1978 K5 Blazer with the Cheyenne package, there is a hole in the firewall almost directly in line with the transmission dipstick tube. It appears to be a factory hole with no grommet or plug. What's it for?

mcmlxix

12-07-2017 03:13 AM

Re: What's This Hole For?

AC truck or Non-AC truck?
I also have a 78 K5 that came with factory AC.
I can check to see what's there on mine....

BHTH	12-07-2017 11:07 AM

Re: What's This Hole For?

Quote:

Originally Posted by mcmlxix (Post 8098675)

AC truck or Non-AC truck?
I also have a 78 K5 that came with factory AC.
I can check to see what's there on mine....

It is a non-AC truck, and I lied, it does have a grommet and the interior firewall cover has a hole in it to expose the grommet.

BHTH	12-13-2017 04:22 PM

Re: What's This Hole For?

Backed this out to the square body forum with some pics.

http://67-72chevytrucks.com/vboard/s...51#post8104151

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