replaced sending unit, still not working...please help!! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1972BlueC20 · 07-20-2014, 10:50 PM

Hey guys,

Ever since I bought my 72 C20, the gas gauge has had a mind of it's own. It sorta works, but its not at all accurate. I've been just keeping track of the miles driven which is inconvenient as hell. I figured that it needed a new sending unit to correct the problem. I ordered one from LMC and installed it today. The one that came out looked just fine and looked just like the new one that I installed in it's place.

After getting everything put back together, the gas gauge still isn't working any differently than before.

What am I missing?? What else could be causing the problem??

Please help!!!

Thanks,

Hutch · 07-20-2014, 11:55 PM

1972BlueC20
This might help
http://67-72chevytrucks.com/vboard/s...d.php?t=456772

Orange Truck · 07-21-2014, 01:42 PM

What was the original source of your fuel sending unit? I have a 1969 Chevrolet C10 Stepside and replaced the fuel sending unit twice...purchased from LMC. Part of the problem was "cheap" poor quality floats of the LMC units. Think I finally took the float from the original and changed out on the LMC fuel sending unit. Even now the accuracy is doubtful. Hope this helps.

woody82 · 07-21-2014, 02:25 PM

That don't sound good I just replaced mine with a lmc its working fine as for now.It might be the tank is not grounded good enough.

07-20-2014, 10:50 PM	#1
1972BlueC20 Registered User Join Date: Jun 2014 Location: Houston, Texas Posts: 722	replaced sending unit, still not working...please help!! Hey guys, Ever since I bought my 72 C20, the gas gauge has had a mind of it's own. It sorta works, but its not at all accurate. I've been just keeping track of the miles driven which is inconvenient as hell. I figured that it needed a new sending unit to correct the problem. I ordered one from LMC and installed it today. The one that came out looked just fine and looked just like the new one that I installed in it's place. After getting everything put back together, the gas gauge still isn't working any differently than before. What am I missing?? What else could be causing the problem?? Please help!!! Thanks,

07-20-2014, 11:55 PM	#2
Hutch Registered User Join Date: Oct 2001 Location: Grapevine, Tx. Posts: 2,142	Re: replaced sending unit, still not working...please help!! 1972BlueC20 This might help http://67-72chevytrucks.com/vboard/s...d.php?t=456772 __________________ John Hutchison Grapevine,Texas 68 1/2 t swb 68 Mustang 69 Jaguar 71 1/2 t swb 88 Supra CompTs6m 93 Escort GT 2005 Corolla XRS

07-21-2014, 01:42 PM	#3
Orange Truck Orange Truck Join Date: Jun 2005 Location: Mount Juliet, Tennessee Posts: 70	Re: replaced sending unit, still not working...please help!! What was the original source of your fuel sending unit? I have a 1969 Chevrolet C10 Stepside and replaced the fuel sending unit twice...purchased from LMC. Part of the problem was "cheap" poor quality floats of the LMC units. Think I finally took the float from the original and changed out on the LMC fuel sending unit. Even now the accuracy is doubtful. Hope this helps.

07-21-2014, 02:25 PM	#4
woody82 Registered User Join Date: Jun 2014 Location: Bllomfield Iowa Posts: 49	Re: replaced sending unit, still not working...please help!! That don't sound good I just replaced mine with a lmc its working fine as for now.It might be the tank is not grounded good enough.



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