Depends on with or without rear a/c. There should be a label under the hood.
R134a
56 oz of R134a
1.68lbs R134a if you have Front A/C only, 2.21lbs of R134a if you have Front and rear A/C. Source: The sticker under the hood.
Capacity not listed by application, but a similar diesel 6.5 l Chevy engine takes .9kg
R134a
how much r134a charge for bus chevy chapion
Chevy switched from R12 to R134a for the model year 1994. Your truck should be R134a.
R134a
R134a
R134a
1660g
R134a freon.............