Gas Gauge issues - The 1947 - Present Chevrolet & GMC Truck Message Board Network

reedsk10 · 05-16-2012, 09:06 AM

Just bought a 1986 K10 SWB 4x4 with a 4" lift and 33's 2 days ago. trying to fix some of the issues i have. my gas gauge is everything but accurate. sometimes it will read dead empty the you hit the gauge with your fingers and it will slowly go up to a certin point and drop a little. it just slowly moves where ever it wants and has a mind of its own. anyone know what could be causing this issue? a bad ground? a bad gauge? i dont know where to go from here. any advice will be helpful. Thanks, Brandon.

J Knight · 05-16-2012, 10:24 AM

If you are getting some reaction from tapping the gauge it could be some corrosion or bad contacts behind the gauge, that's where I would start.
Posted via Mobile Device

**hatzie** · 05-16-2012, 06:50 PM

Corrosion on or loose calibration resistor.

Nouseforaname · 06-03-2012, 01:54 PM

I would check the contacts as previously said, the gauge contacts are spring terminals and the gauge just pulls out once the bezel and lens are removed.

I would try reseating the gauge a few times them put some contact lube on the contacts and try that.

05-16-2012, 09:06 AM	#1
reedsk10 Registered User Join Date: May 2012 Location: Essington, Pa Posts: 6	Gas Gauge issues Just bought a 1986 K10 SWB 4x4 with a 4" lift and 33's 2 days ago. trying to fix some of the issues i have. my gas gauge is everything but accurate. sometimes it will read dead empty the you hit the gauge with your fingers and it will slowly go up to a certin point and drop a little. it just slowly moves where ever it wants and has a mind of its own. anyone know what could be causing this issue? a bad ground? a bad gauge? i dont know where to go from here. any advice will be helpful. Thanks, Brandon.

05-16-2012, 10:24 AM	#2
J Knight Registered User Join Date: Jun 2011 Location: Baytown TX Posts: 2,219	Re: Gas Gauge issues If you are getting some reaction from tapping the gauge it could be some corrosion or bad contacts behind the gauge, that's where I would start. Posted via Mobile Device __________________ John 82 Chevy Silverado 350ci/TH350

05-16-2012, 06:50 PM	#3
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 5,020	Re: Gas Gauge issues Corrosion on or loose calibration resistor. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful.

06-03-2012, 01:54 PM	#4
Nouseforaname Registered User Join Date: Jun 2012 Location: Brandon Mb Posts: 14	Re: Gas Gauge issues I would check the contacts as previously said, the gauge contacts are spring terminals and the gauge just pulls out once the bezel and lens are removed. I would try reseating the gauge a few times them put some contact lube on the contacts and try that.



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