Having problems with your 1987 Cadillac Brougham ?
Ac blows hot air when going up a grade. - 1987 Cadillac Brougham
If it does it when accelating you may have a vacum leak. This will cause the vents to switch foff AC. Check for leaks .
Repair Help & Product Troubleshooting for 1987 Cadillac Brougham
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