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GMC Forum: Ports
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Old 03-09-2019, 12:05 AM
Nightowl Nightowl is offline
Junior Member
Drives a GMC Truck Sierra c1500
Join Date: Feb 2019
Location: Tennessee
Posts: 3
Default Ports

Hello, I just got a 96 GMC Sierra SLE with a 5.7L L31 engine. First 350 eng. Probably bad steeper motors in 2 gauges as they quickly bounce around. I am wanting to put mechanical oil and water temp gauges in but according to schematics, disconnecting the oil will shut off fuel pump, and water will off set PCM and emissions. Runs smooth and great as is, so senders must be ok. Has towing pkg and oil cooler attached by oil filter.
(1) Without going to the trouble to get to the Oil unit behind lower In Manifold with a tree, is there other place on this engine to get oil pressure?
(2) There's no room without removing manifold to drill and tap for water and the temp sensor has to dip into the passage to work properly. Can i get water from any other spot? Tks
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