Gas gauge works backwards

DAN ANSELLO

MEMBER
2007 CHEVROLET IMPALA
6 CYL
2WD
AUTOMATIC
135,000 MILES

Have a 2007 impala and changed fuel pump now gas gauge works in reverse how to repair

Saturday, January 8th, 2011 AT 6:36 PM

13 Replies

WRENCHTECH

MECHANIC
20,761 POSTS

Has someone worked on the pump or related things recently? How did this start?

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Saturday, January 8th, 2011 AT 7:18 PM

MICHAEL1956

MEMBER
1 POST
2007 CHEVROLET IMPALA
3.5L
V6
FWD
AUTOMATIC
158,000 MILES

After installing a new fuel pump assembly gas gauge reads backwards.
Gas gauge was working before installing fuel pump.

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Friday, December 28th, 2018 AT 10:38 AM (Merged)

HMAC300

MECHANIC
48,601 POSTS

Check to see if wires going to sender are hooked up correctly. The ones inside the tank unfortunately arrow points to tan wire which goes to gauge purple goes to PCM.

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Friday, December 28th, 2018 AT 10:38 AM (Merged)

KICKNCOUNTRY

MEMBER
2 POSTS
2007 CHEVROLET IMPALA
6 CYL
FWD
AUTOMATIC
61,000 MILES

I have a 2007 Impala that does not give me a correct reading on the fuel guage. I can fill it up and 5 minutes later the low fuel lsign on the dash comes on. Any suggestions on what it might be? Is it the float or a sending unit that might be bad? HELP!

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Friday, December 28th, 2018 AT 10:38 AM (Merged)

RHALL77

MECHANIC
3,361 POSTS

Most likely caused by the fuel level sensor. Is it still under warranty being its a 2007

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Friday, December 28th, 2018 AT 10:38 AM (Merged)

GENE3

MEMBER
1 POST
2000 CHEVROLET IMPALA
6 CYL
FWD
AUTOMATIC
271,000 MILES

My gas gauge goes all over the place no matter how much gas is in the tank

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Friday, December 28th, 2018 AT 10:38 AM (Merged)

RHALL77

MECHANIC
3,361 POSTS

The fuel level sender is bad in the tank and needs to be replaced.

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Friday, December 28th, 2018 AT 10:38 AM (Merged)

HDPOSE

MEMBER
1 POST
2004 CHEVROLET IMPALA

Engine Performance problem
2004 Chevy Impala 6 cyl Front Wheel Drive Automatic

I recently had my 2004 Impala SS in for various GM service items. The car as 70,000 Km on it.

As my wife drives it she notice or thought she was getting better gas mileage as the fuel gauge wasn't moving. After about 400 KM it suddently moved near the empty position. This has continued during the last 3 fill-ups.