According to the 07 Refrigerant Oil Specifications an 99 GMC Yukon uses either 36 or 64 oz of refrigerant depending if the vehicle has rear ac. You can find more helpfull information about your vehicle ac system at www.idqusa.com.
A 1999 GMC Yukon typically uses about 2 to 2.5 pounds of R-134a refrigerant (commonly referred to as Freon) in its air conditioning system. It's always best to check the vehicle's specifications or the label under the hood for the exact amount. If you're unsure or need to recharge the system, it's advisable to consult a professional.
3
4.25 lbs
1.75 lbs1.75 lbs
2 1/2 lbs.
On the 2003 Chevy Silverado 2500, the A/C system recharge capacity (R-134a) is: 1.6 lbs.
1.52 lbs of r134a freon...
.9 lbs of freon
It's 3 lbs, 12 ounces for the T660, and that's what it should be for the T600, as well.
The recommended freon capacity is 1.75 lbs
134a freon about 3 lbs max
1.75 lbs