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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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#91112 06/19/2003 1:44 AM | Joined: Apr 2003 Posts: 19 Junior Member | | Junior Member Joined: Apr 2003 Posts: 19 | Truck is 56 GMC 1/2 ton, following manual instructions I have identified a bad tank sending unit. I ordered a replacement, upon arrival I noticed that it had 30 ohms stamped on it. I removed old sending unti and it has 90 ohms stamped on it. I know I need the correct ohm range so the stock gauge to work correctly, I could not find an answer in the manual. Second question; is bending the float arm the correct way to calibrate tank level to gauge reading? Thanks for your help, Roy | | |
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