* Under the hood in the fuse box: This is the most common location. The fuse box is usually located near the battery, often under a cover. The relay itself may be labeled, or you may need to consult your owner's manual's fuse diagram to identify it. Look for a relay related to "A/C," "compressor," or a similar designation.
* Under the dashboard: Less common, but possible on some Envoy models, the relay might be located within a fuse box or relay panel under the dashboard. Accessing this would require removing trim panels.
To find it definitively:
1. Consult your owner's manual: This is the best place to start. The manual will have a diagram showing the location of all fuses and relays.
2. Look for markings: Once you've located the under-hood fuse box (or the under-dash one if the manual indicates it), carefully examine the relays and fuses. Look for labels or diagrams that might identify the AC compressor relay.
3. Use a multimeter: If you have a multimeter and are comfortable with basic electrical work, you could test the relays to find the one that controls the AC compressor clutch. *However, be cautious when working with automotive electrical systems.*
If you can't locate it after checking these places, it's best to consult a GMC mechanic or auto parts store professional for assistance. Providing them with your Envoy's VIN will ensure they give you the most accurate information.
