Low fuel light??
Thread Starter
Safety Car
Joined: Jun 2004
Posts: 4,360
Likes: 221
From: Beecher Illinois
Low fuel light??
The low fuel light in my 78SA wasn't working. I know there's only 2 gallons of gas in it and it should be on. Took the glove box out and reached over and took the module out. Looked it over, nothing burned or damaged on the printed circuit. Stuck it back in and it started to work again. Took it back out and bent the 3 contacts to make it a little tighter. Worked....but then it gradually faded and went out. If I reached behind and just touched the back with my fingers it went back on....then faded out again.
I know it works by resistance. Am I applying resistance when I touch it? Is there a specific component that is causing it to fade out?
Just like to have it working right.
I know it works by resistance. Am I applying resistance when I touch it? Is there a specific component that is causing it to fade out?
Just like to have it working right.
Burning Brakes
Joined: Feb 2000
Posts: 1,246
Likes: 1
It is not, the low fuel light is just a bulb socket with a small circuitry board on the back. It goes into the back of your center cluster with a bajonet type lock just like all the other bulbs. You can however easily reach it if you take out the glove box liner.
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Burning Brakes
Joined: Oct 2007
Posts: 946
Likes: 0
From: Lake Geneva WI
I would say that has me more intrigued than the fact that it is not working. Is there on on a 79 as well? I've never noticed one coming on. Did not even think there would be one on a car that old.
Melting Slicks
Joined: Jul 2004
Posts: 2,577
Likes: 2
From: Long Island New York
Mine never used to work at all, you could literally run the car out of gas and the light would not come on. All of a sudden one day, for no apparent reason it came on and has not gone out since, even with a full tank of gas. 
Team Owner
Joined: Oct 2004
Posts: 23,831
Likes: 10
From: Springfield MO
St. Jude Donor '07
It was introduced no later than 77 as part of the Convenience Group. Less than 9,000 77s were built without the CG, and it was finally made standard for 79.
Thread Starter
Safety Car
Joined: Jun 2004
Posts: 4,360
Likes: 221
From: Beecher Illinois
No solution but my update. Swapped the light/module with the one in my white79, same thing. The module out of the 78SA works fine in the 79.
Something with the center gauge circuit board?
Not important enough to start tearing stuff apart right now.
Something with the center gauge circuit board?
Not important enough to start tearing stuff apart right now.
Intermediate
Joined: Mar 2007
Posts: 45
Likes: 0
Being that I like everything to work in my 80. and persistent to getting this fixed..could my intermittant problem with the gas warning light going on/off at times be the circuit board on the light? and do they make replacements?
Burning Brakes
Joined: Oct 2007
Posts: 946
Likes: 0
From: Lake Geneva WI
Melting Slicks
Joined: Aug 2004
Posts: 2,897
Likes: 227
From: Oakbank Manitoba
I've owned my 1980 Vette since 83. I replaced that light/board every five years or so. They don't last very long. Too problematic for me. They aren't available new anymore. When they were...they went for $75 each. If you do a search on here you'll find guys that have built their own versions.