This 1992 Buick Park Avenue came in with the complaint that the blower did not work. Customer also stated that the blower motor had been replaced about a year ago. The blower motor is located in the center of the firewall under the hood.
The first thing that I found was that the blower motor harness connector and the terminals in the blower motor were heat damaged, burnt. I had also noticed that the harness connector showed significantly more damage that the blower motor terminals. Diagnosis of faulty connector and motor assembly.
I replaced the motor by removing the mounting screws and pulling the motor assembly from the HVAC box.
Next, I spliced in a new harness connector assembly. To order a new repair harness please click here.
Installed the new blower motor with the oxygen sensor wire caught under the motor. Of course I removed the motor and put the wire back where it was supposed to be.
As shown in the following picture and connected the new harness to the motor. I cannot stress this next point enough. The only reason the blower motor that was installed only a year ago failed was because the installer failed to replace the connector at the same time. ANY time a burnt harness connector is found it and the component it attaches to must be replaced at the same time or early failure will occur!!!!!!