If your lights are flickering on your 98 Bravada, you might have a shortage. It can also indicate that your alternator is failing.
R134a
No.
THERE IS NO FREON IN A 98 IT IS R134
Low pressure line - larger line from A/C compressor
R134a
normally 2
R134a
Nope
ding freon will make it colder, only if freon is low. if freon is low you have a freon leak so adding will be wasting time and money. more likely to need a new ac temp thermostat, which is no big deal to change
A factory GM system which uses R134a Freon...........
R134a