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RyanNewberry · 12-07-2017, 11:44 PM

I’m not sure how much difference it makes to begin with. I daily a 87 Silverado and I just replaced my drivers side tank and sending unit. Since I didn’t know better I ordered the sending unit for main tank, not auxiliary. I installed it in the new drivers side tank and it worked just fine. I bypassed the selector valve and got rid of the passenger side tank all together. Been running good ever since.

12-07-2017, 11:44 PM	#6
RyanNewberry Registered User Join Date: Oct 2017 Location: Medford Wisconsin Posts: 50	Re: Fuel sending unit for 1987 GMC Sierra I’m not sure how much difference it makes to begin with. I daily a 87 Silverado and I just replaced my drivers side tank and sending unit. Since I didn’t know better I ordered the sending unit for main tank, not auxiliary. I installed it in the new drivers side tank and it worked just fine. I bypassed the selector valve and got rid of the passenger side tank all together. Been running good ever since.