The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - how do i set up my fuel gauge to work with a blazer tank?

**SS55** · 05-28-2004, 12:06 AM

I have always been told that all of these trucks used a 0-90 ohm sending unit. The differences in sending units, as explained to me, was the size of the fuel line. The I6 and the 2bbl V8 got the 5/16" line while the 4bbl V8 and the Big Blocks got the 3/8" line. And there's also the difference for a behind the seat sender and the Blazer/Suburan sending unit.

05-28-2004, 12:06 AM	#5
SS55 Registered User Join Date: Nov 2003 Location: San Diego, CA Posts: 62	I have always been told that all of these trucks used a 0-90 ohm sending unit. The differences in sending units, as explained to me, was the size of the fuel line. The I6 and the 2bbl V8 got the 5/16" line while the 4bbl V8 and the Big Blocks got the 3/8" line. And there's also the difference for a behind the seat sender and the Blazer/Suburan sending unit. __________________ Be wary of the light at the end of the tunnel....It might be a gorilla holding a flashlight! 71 Blazer, ex-4WD...Bought it that way 55 GMC 55 Belair 2dr HT 67 El Camino