Troubleshoot dual tanks - The 1947 - Present Chevrolet & GMC Truck Message Board Network

rod1701 · 12-19-2019, 01:06 PM

While I’ve got the bed off, I need to fix my dual tank switch.

Done some reading that solenoid can be a failure point on these. But need a process for troubleshooting to see if it is switch, solenoid, or other.

Doesn’t help that gas gauge isn’t working and will need to test the sending units for both.

Any steps to help me narrow down the problem area without throwing a ton of uneceddary parts and $$$ at it?

**HO455** · 12-19-2019, 01:47 PM

A quick search for "dual tank problems" revealed this thread. I hope it helps.

http://67-72chevytrucks.com/vboard/s...d.php?t=754061

**Palf70Step** · 12-19-2019, 02:52 PM

Moved your post to the truck section instead of blazer area. You will probably get more response that way.

rod1701 · 12-19-2019, 03:46 PM

Thanks.

12-19-2019, 01:06 PM	#1
rod1701 Registered User Join Date: Nov 2012 Location: los angeles,ca Posts: 115	Troubleshoot dual tanks While I’ve got the bed off, I need to fix my dual tank switch. Done some reading that solenoid can be a failure point on these. But need a process for troubleshooting to see if it is switch, solenoid, or other. Doesn’t help that gas gauge isn’t working and will need to test the sending units for both. Any steps to help me narrow down the problem area without throwing a ton of uneceddary parts and $$$ at it? __________________ 1979 C-10 LWB

12-19-2019, 01:47 PM	#2
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 11,607	Re: Troubleshoot dual tanks A quick search for "dual tank problems" revealed this thread. I hope it helps. http://67-72chevytrucks.com/vboard/s...d.php?t=754061 __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

12-19-2019, 02:52 PM	#3
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 47,468	Re: Troubleshoot dual tanks Moved your post to the truck section instead of blazer area. You will probably get more response that way. __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!

12-19-2019, 03:46 PM	#4
rod1701 Registered User Join Date: Nov 2012 Location: los angeles,ca Posts: 115	Re: Troubleshoot dual tanks Thanks. __________________ 1979 C-10 LWB



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