 
				
	| 2007 GMC Sierra 3500 Classic SLT 6.6L Compressor I am not very familiar with A/C systems, am able to do the basics. Seems to me like a pressure problem (not sure what the low and high side pressures should be) or the pressure switch, but am not sure how to test the switch. Any ideas or info would be greatly ... 
                        
                            FIX posted 6/6/2016
                               
                    iATN Members:  Login to view full TechHelp request Auto Repair Pros: Join iATN to read this TechHelp request Vehicle Owners: Find a nearby iATN member to repair your vehicle 33 Replies Received (View Replies)33 Replies Received (Hide Replies)
 | Message Closed w/FIX 
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| VIN | 1GTJK33D67 | 
| Engine | 6.6 L / 8 cyl / DIESEL | 
| Trans | 6-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Affected | Compressor | 
| Conditions | A/C Inop, A/C Premission Withheld | 
| Misc. | Fire Under Hood, Previous Repairs by Another Shop | 
Message Closed w/FIX
            
             Vehicle Data
 Vehicle Data
                2007 GMC Sierra 3500 Classic SLT
| VIN | 1GTJK33D67 | 
| Engine | 6.6 L / 8 cyl / DIESEL | 
| Trans | 6-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Affected | Compressor | 
| Conditions | A/C Inop, A/C Premission Withheld | 
| Misc. | Fire Under Hood, Previous Repairs by Another Shop | 
 33 Replies Received
33 Replies Received
 33 Replies Received
          33 Replies Received
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