Having problems with your 1998 GMC Sierra ?
Heater blower motor doesn't run
\015 I checked heater motor it works fine. Replaced heater switch and checked voltage across fan fuse. Where is the relay located for the fan it doesn't appear to be with the other relays under the hood?\015
Check under your dash by the fuse box might be there
Repair Help & Product Troubleshooting for 1998 GMC Sierra
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