Check the relay fuse in the fuse box unders the hood (Black Square)
Fuse/relay center under the hood
No...
There is a fuse for the blower motor on the fuse panel, I do not know of a relay.
Scudo heater relay under bonnet on drivers side in fuse box
A fuse and a relay are two different items. There are many fuses and relays in that Sonoma. Need to know which one you are looking for.
My 2003 has a fuse box in the engine comparment driverside fendewell labeled fuse relay center.
In the under-hood fuse box.
If you don't have power to your heater or ac fan, it could be a fuse or a relay. You should check your owner's manual to determine which fuse or relay affects your fan.
I believe you have a relay that runs the high speed for the heater fan motor. The relay should be located in the power distribution box under the hood.
#64 is a 30A fuse in the fuse/relay box under the hood, on the driver's side, by the firewall.
The 1997 GMC air conditioning relay switch can be found in the fuse box. The air conditioning relay switch will be in the third column, at the top.