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**57NAPCO** · 02-04-2023, 07:46 AM

Possibly a dead short? The pressure switch is a new (A/C Delco) one, it’s stays pegged and does not move at all, key on or key off, pulled the single wire off…no movement.

Any help would be much appreciated.

1987 SILVERADO, factory original, new 5.7 TBI truck

02-04-2023, 07:46 AM	#1
57NAPCO F’B’D guy Join Date: Feb 2004 Location: Texas/Maine Posts: 2,210	Oil pressure guage is pegged all the way to the right, any ideas why ? Possibly a dead short? The pressure switch is a new (A/C Delco) one, it’s stays pegged and does not move at all, key on or key off, pulled the single wire off…no movement. Any help would be much appreciated. 1987 SILVERADO, factory original, new 5.7 TBI truck