gas gauge

LB rider · 11-02-2009, 09:20 PM

Prolly hear this a lot on here but I need quick help... my gas gauge flops around as I'm driving but every once in a while it seems like it's working but 99% of the time it's on empty or full... What should I troubleshoot or what could it be?

badboy69 · 11-02-2009, 09:42 PM

check your float to see if its still connected on your sending unit

therule546 · 11-02-2009, 10:19 PM

mine did the same thing. Sending unit was out. wrong section?

Patawick · 11-02-2009, 11:48 PM

I vote wrong section

01cherryreds10 · 11-02-2009, 11:57 PM

Usually it's a bad level sensor in the fuel tank. Common problem on newer GM vehicles. You can do one of two options. Get a new one (I think they solder onto the fuel pump though), or replace the entire fuel pump.

NikeCheck246 · 11-03-2009, 12:04 AM

Actually, ive never heard a thing about the fuel level sensor in the tank. However, gm did a pseudo-recall on their harness that connects to the fuel pump, on every truck/van vehicle, because of bad pins in the connectors at the pump. Everyone from Advance Auto Parts to the GM Dealer will do everything but force you to purchase the harness splice when you purchase a fuel pump. My guess is you have had it unplugged and now are having issues. You would be amazed how many people have this problem. Change out the harness to the pump before you change the pump itself and see if it doesnt make a world of difference.

oh,
and wrong section

**hamagc** · 11-03-2009, 11:53 AM

ya wrong section. i had a big problem with mine. would jump all over hell. if you search in the 262 section i have a video posted of mine where it is jumping back and forth and all over the place. when i went to bag my truck, we broke one of the fittings on top the fuel pump. had to replace. grabbed one off of ebay for cheap and it works perfect. gas gauge works and i can tell how much gas i have now. it's really just the sending unit but our sending unit and fuel pump are all one piece.

pearldrop · 11-03-2009, 02:17 PM

I had the same problem with the plug on the fuel pump. I took the plug completely apart and bent the little springs up a little so it had a tighter fit on the fuel pump prongs and it worked perfect after that.

sam336 · 11-03-2009, 02:51 PM

had that problem. was the sending unit and if you replace it you have to replace the whole fuel pump.

01cherryreds10 · 11-03-2009, 05:24 PM

Quote: Originally Posted by pearldrop

I had the same problem with the plug on the fuel pump. I took the plug completely apart and bent the little springs up a little so it had a tighter fit on the fuel pump prongs and it worked perfect after that.

This would be the fuel level sensor that he is explaining right here^ GM cars have had problems with these for a while now, more commonly on HHR and Trailblazers. GM has some crap you can put in your tank to clean the tank, but it only works for a week and is a temporary fix.

LB rider · 11-07-2009, 06:08 AM

thanks everybody and i know its the wrong section to post this but i needed quick help and it only happen when i bagged my truck and ive herd its a common problem...

11-02-2009, 09:20 PM	#1
LB rider Registered User Age: 20 Join Date: Apr 2009 Posts: 35 Location: WS Long Beach User is: OffLine	gas gauge Prolly hear this a lot on here but I need quick help... my gas gauge flops around as I'm driving but every once in a while it seems like it's working but 99% of the time it's on empty or full... What should I troubleshoot or what could it be?
	[Reply w/Quote]

11-02-2009, 09:42 PM	#2
badboy69 Registered User Age: 30 Join Date: Mar 2007 Posts: 103 Location: User is: OffLine	Re: gas gauge check your float to see if its still connected on your sending unit
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11-02-2009, 10:19 PM	#3
therule546 Registered User Join Date: Aug 2007 Posts: 1,481 Location: User is: OffLine	Re: gas gauge mine did the same thing. Sending unit was out. wrong section?
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11-02-2009, 11:48 PM	#4
Patawick Registered User Age: 19 Join Date: Apr 2008 Posts: 1,602 Location: User is: OffLine	Re: gas gauge I vote wrong section
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11-02-2009, 11:57 PM	#5
01cherryreds10 Tim loves his doritos Age: 19 Join Date: Jan 2007 Posts: 6,222 Location: Illinois User is: Online	Re: gas gauge Usually it's a bad level sensor in the fuel tank. Common problem on newer GM vehicles. You can do one of two options. Get a new one (I think they solder onto the fuel pump though), or replace the entire fuel pump.
	[Reply w/Quote]

11-03-2009, 12:04 AM	#6
NikeCheck246 FooldU Age: 23 Join Date: Sep 2006 Posts: 407 Location: Asheville, NC User is: OffLine	Re: gas gauge Actually, ive never heard a thing about the fuel level sensor in the tank. However, gm did a pseudo-recall on their harness that connects to the fuel pump, on every truck/van vehicle, because of bad pins in the connectors at the pump. Everyone from Advance Auto Parts to the GM Dealer will do everything but force you to purchase the harness splice when you purchase a fuel pump. My guess is you have had it unplugged and now are having issues. You would be amazed how many people have this problem. Change out the harness to the pump before you change the pump itself and see if it doesnt make a world of difference. oh, and wrong section
	[Reply w/Quote]

11-03-2009, 11:53 AM	#7
hamagc US Beer Drinking Team Age: 27 Join Date: Apr 2006 Posts: 7,152 Location: Lancaster, CA - Southern California User is: OffLine	Re: gas gauge ya wrong section. i had a big problem with mine. would jump all over hell. if you search in the 262 section i have a video posted of mine where it is jumping back and forth and all over the place. when i went to bag my truck, we broke one of the fittings on top the fuel pump. had to replace. grabbed one off of ebay for cheap and it works perfect. gas gauge works and i can tell how much gas i have now. it's really just the sending unit but our sending unit and fuel pump are all one piece.
	[Reply w/Quote]

11-03-2009, 02:17 PM	#8
pearldrop Registered User Join Date: Jun 2007 Posts: 226 Location: Mount Vernon, WA User is: OffLine	Re: gas gauge I had the same problem with the plug on the fuel pump. I took the plug completely apart and bent the little springs up a little so it had a tighter fit on the fuel pump prongs and it worked perfect after that.
	[Reply w/Quote]

11-03-2009, 02:51 PM	#9
sam336 Registered User Age: 20 Join Date: Aug 2009 Posts: 203 Location: User is: OffLine	Re: gas gauge had that problem. was the sending unit and if you replace it you have to replace the whole fuel pump.
	[Reply w/Quote]

11-03-2009, 05:24 PM	#10
01cherryreds10 Tim loves his doritos Age: 19 Join Date: Jan 2007 Posts: 6,222 Location: Illinois User is: Online	Re: gas gauge Quote: Originally Posted by pearldrop I had the same problem with the plug on the fuel pump. I took the plug completely apart and bent the little springs up a little so it had a tighter fit on the fuel pump prongs and it worked perfect after that. This would be the fuel level sensor that he is explaining right here^ GM cars have had problems with these for a while now, more commonly on HHR and Trailblazers. GM has some crap you can put in your tank to clean the tank, but it only works for a week and is a temporary fix.
	[Reply w/Quote]

11-07-2009, 06:08 AM	#11
LB rider Registered User Age: 20 Join Date: Apr 2009 Posts: 35 Location: WS Long Beach User is: OffLine	Re: gas gauge thanks everybody and i know its the wrong section to post this but i needed quick help and it only happen when i bagged my truck and ive herd its a common problem...
	[Reply w/Quote]