What's This Air Conditioning Code on my SPID?
 

I have the code "9947AA A/C CONVERSION" on the SPID for my 1971 GMC ambulance. I've tried to research this code with no luck so far, it doesn't look like an RPO so I assume it may be some kind of fleet code or other build provision related to the ambulance conversion. Any insights?

http://media.fotki.com/1_p,rrbbkfrtw...SC08524-vi.jpg

Re: What's This Air Conditioning Code on my SPID?
 

Did Suburban's still have roof only air on 1971?

Yours appears to have factory dash air. IIRC, that wasn't a factory option until '72.

So your truck must have went to special area to have the dash air installed.

Just a guess

Re: What's This Air Conditioning Code on my SPID?
 

Yes, it has factory dash air plus an aftermarket Mark IV a/c unit installed in the partition for the patient compartment.

Re: What's This Air Conditioning Code on my SPID?
 

Is that the original SPID? Looks pretty new . . .

Re: What's This Air Conditioning Code on my SPID?
 

Yes, it's the original. I took the photo 2 months ago.