Gas gage indicator stopped working on 2004 Grand Prix. Cause and remedy?

Asked by Jan 25, 2012 at 10:14 AM about the 2004 Pontiac Grand Prix

Question type: Maintenance & Repair

Gas level indicator on dash is not working - goes from full to empty when starting car and isn't accurate in general. Need estimate of how extensive the repair is and cost.

3 Answers

135

the Gauge sweep is the computer checking to see if the instrument cluster is receiving proper signals....the inop gauge is either an inoperative sending unit in the fuel tank (which requires dropping the fuel tank removing the pump and replacing the pump/sending unit assembly) or the wiring between the pump/sending unit and the computer is either damaged or corroded. check the wiring first

10 out of 10 people think this is helpful.

You may want to look in the trunk under the matting, towards the rear seat. There may be an access panel to the fuel pump, so you dont have to fight with usually problematic straps. Just be careful disconnecting the lines. If you look at the contacts on the fuel pump assembly closely, ( everything disconnected assuming.) operate the float and watch the little slider on the assembly. The contacts can get burned to a point they no longer provide a good contact. If so ,the unit should be replaced. I DID repair mine, but unfortunately it lasted about six months. Hope this helps.

5 out of 5 people think this is helpful.
110

I have a 2007 pontiac Grand Prix my fuel gauge goes to full when it's on empty and when I put gas in the car it goes to 1/4 from being full

9 out of 9 people think this is helpful.

Your Answer

Add photo

Related Questions

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 3,696 nationwide Grand Prix listings starting at $800.

ZIP:

Search Pontiac Grand Prix Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Pontiac Grand Prix Experts

#1 Js08016
Js08016
Reputation 3,870
#2 Tom Demyan
Tom Demyan
Reputation 2,570
#3 munron
munron
Reputation 2,060
View All

Related Models For Sale

Used Chevrolet Impala
889 Great Deals out of 35,178 listings starting at $1,700
Used Pontiac Bonneville
8 Great Deals out of 654 listings starting at $1,375
Used Pontiac G6
69 Great Deals out of 5,047 listings starting at $1,500
Used Chevrolet Monte Carlo
18 Great Deals out of 1,673 listings starting at $2,990
Used Pontiac Grand Am
1,628 listings starting at $1,000
Used Chevrolet Malibu
1,128 Great Deals out of 82,051 listings starting at $1,800
Used Pontiac GTO
5 Great Deals out of 481 listings starting at $5,500
Used Ford Mustang
550 Great Deals out of 42,532 listings starting at $1,699
Used Nissan Maxima
388 Great Deals out of 24,613 listings starting at $999
Used Buick Regal
146 Great Deals out of 11,674 listings starting at $1,450
Used Jeep Grand Cherokee
902 Great Deals out of 66,413 listings starting at $300
Used Nissan Altima
1,057 Great Deals out of 82,871 listings starting at $670

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
12 Great Deals out of 462 listings starting at $800
2007 Pontiac Grand Prix For Sale
3 Great Deals out of 515 listings starting at $2,635
2006 Pontiac Grand Prix For Sale
4 Great Deals out of 634 listings starting at $2,000
2005 Pontiac Grand Prix For Sale
445 listings starting at $5,900