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Okie528 · 08-12-2017, 11:33 PM

Installed '90 GM Factory EFI tank, '72 Blazer Factory gas gauge is pegged past full? I know the ohms are the same, just curious if anyone else has run into this problem, and how I can fix it. All my wiring harnesses were replaced before the tank swap and gauge was working properly before. Wire is grounded well. Tested the sending unit with a multimeter it works properly. Assuming I need to do something to get the newer style sending unit to work with the factory fuel gauge. I did the swap so I could use an in-tank pump for my Holley Sniper EFI. I have posted this in the Blazer Forum and the ls swap forum with no responses, hoping this is the right forum to find my answer.

Thanks in advance.

08-12-2017, 11:33 PM	#1
Okie528 Registered User Join Date: Feb 2016 Location: Maryville, TN Posts: 44	Installed '90 GM Factory EFI tank, '72 Blazer Factory gas gauge is pegged past full? Installed '90 GM Factory EFI tank, '72 Blazer Factory gas gauge is pegged past full? I know the ohms are the same, just curious if anyone else has run into this problem, and how I can fix it. All my wiring harnesses were replaced before the tank swap and gauge was working properly before. Wire is grounded well. Tested the sending unit with a multimeter it works properly. Assuming I need to do something to get the newer style sending unit to work with the factory fuel gauge. I did the swap so I could use an in-tank pump for my Holley Sniper EFI. I have posted this in the Blazer Forum and the ls swap forum with no responses, hoping this is the right forum to find my answer. Thanks in advance. Attached Images