2008 Grand Prix base model
Similar issue, on daughters car, is the arm splined to the spindle, or does the pressure from the nut pushing against the arm keep the shaft from spinning on the shaft? I removed the nut and the arm would not come off, didn't try that hard and ddon't have a puller for it. I positioned the arm in the parked position and then tightened the nut. Checked torque at 20 ft-lbs and it was at least that tight. Tried wipers and they now appear to work fine.
Is that all there is to it, or do I need to replace the arm if splines are sheared off.
Thanks,
John
