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'87 SDV
1,297 Posts
Trans mount bracket - the boneyard is your best option. Hope you don't live where there's snow.

Electrical issue and voltage code - possibly the bad battery was at fault. The ECM monitors the battery voltage and adjusts the alternator output accordingly.

Vacuum pump - if you're talking about the pump that mounts on the rail near the left front wheel, it provides constant vacuum for the cruise control servo.
Should only run when the cruise is engaged.
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