01 with a Low fuel light on with it full - The 1947 - Present Chevrolet & GMC Truck Message Board Network

silvereagle07 · 11-29-2008, 09:45 PM

I have an 01 that the lflight comes on at any given time. It is frustrating. Is this a common problem? Any help would be great.

**53burb** · 11-30-2008, 05:30 AM

It's a common problem starting with the '99 trucks. I think GM corrected this problem a few years back. Anyways to correct the problem, you need to replace the sender in the gas tank. If you haven't replaced your fuel pump yet, (I assume you haven't because the problem would have more likely been fixed when the pump was replaced with the sender), buy a complete setup to include the sender & that should fix it.

1restorick · 11-30-2008, 07:06 AM

Before you drop the tank, try running some complete fuel system cleaner with Techron. Often the gauge problems occur with sulfur type deposits building up on the gauge rheostat. This stopped the problem on my 2002 Tahoe.

Rick

**53burb** · 11-30-2008, 07:59 AM

I think the other problem was the wiring for the fuel pump/sender. The original harness that goes into the tank needs to be cut & replaced. I think that's what the problem was IIRC.

**53burb** · 12-04-2008, 02:13 AM

I stand corrected. When I needed to replace the pump on my '99, a new harness (4-pin) was replaced along with the pump. The plug was cut & the new harness was put in its place. I'm not sure why Chevy recommends this, but any place that sells the pump, usually has the new plug/harness, as well.

11-29-2008, 09:45 PM	#1
silvereagle07 Registered User Join Date: Sep 2008 Location: Bailey, NC Posts: 2,462	01 with a Low fuel light on with it full I have an 01 that the lflight comes on at any given time. It is frustrating. Is this a common problem? Any help would be great. __________________ Jeramy '84 GMC project truck '85 Chevy 4X4 SOLD '07 Chevy Trailblazer SS 5th Annual SHPHC Car/Truck Show Pics http://67-72chevytrucks.com/vboard/s...d.php?t=543605 UPDATED PICS! CHECK 'EM OUT

11-30-2008, 05:30 AM	#2
53burb Senior Member Join Date: May 2004 Location: Queen Creek, AZ Posts: 1,010	Re: 01 with a Low fuel light on with it full It's a common problem starting with the '99 trucks. I think GM corrected this problem a few years back. Anyways to correct the problem, you need to replace the sender in the gas tank. If you haven't replaced your fuel pump yet, (I assume you haven't because the problem would have more likely been fixed when the pump was replaced with the sender), buy a complete setup to include the sender & that should fix it.

11-30-2008, 07:06 AM	#3
1restorick Registered User Join Date: Feb 2007 Location: South West Pennsylvania Posts: 164	Re: 01 with a Low fuel light on with it full Before you drop the tank, try running some complete fuel system cleaner with Techron. Often the gauge problems occur with sulfur type deposits building up on the gauge rheostat. This stopped the problem on my 2002 Tahoe. Rick __________________ RED RUMBLE 1963 C10 Chevy Truck Owned since 1984

11-30-2008, 07:59 AM	#4
53burb Senior Member Join Date: May 2004 Location: Queen Creek, AZ Posts: 1,010	Re: 01 with a Low fuel light on with it full I think the other problem was the wiring for the fuel pump/sender. The original harness that goes into the tank needs to be cut & replaced. I think that's what the problem was IIRC.

12-04-2008, 02:13 AM	#5
53burb Senior Member Join Date: May 2004 Location: Queen Creek, AZ Posts: 1,010	Re: 01 with a Low fuel light on with it full I stand corrected. When I needed to replace the pump on my '99, a new harness (4-pin) was replaced along with the pump. The plug was cut & the new harness was put in its place. I'm not sure why Chevy recommends this, but any place that sells the pump, usually has the new plug/harness, as well.

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