Where is the low side AC service port on a 1998 Chevy Express? Do I add the R134 with the engine on or off?
 
Answer Ranks
This week's top 10
| 1 globalhelper | 6 goodguy |
| 2 wetry | 7 ebans777 |
| 3 ziptie12 | 8 Superior Auto Diesel Repair |
| 4 wenyan | 9 FREDDY BLUE |
| 5 tunnelram | 10 team g performance |