how much r134 does a ford 500 take
The 1992 GMC Suburban came from the factory with R12 not R134. Unless it is has been converted to use R134 you cannot simply add R134. If it has been converted you need to have the leak fixed before adding anything. It is illegal to add refrigerant to any system without first repairing the leak. How much it will hold depends on how much leaked out.
1.53 lbs of R134
100.50
Why would you want to even consider doing this? R12 is no longer in production and as such it cost almost 4 times as much as R134. But to answer your question, use R12 in a R134 system and you will destroy the compressor as the oil is not compatible with R134 oil.
1.98 lbs r134 a
R134
Need to know exact model and configuration. A sleeper berth equipped line haul tractor and a daycab FL70 aren't going to have the same specs.
2 cans or about 40 lbs
1.5 LBS will refill it
3.25 lbs
R134 .... IS freon.