99 Sonoma fuel guage works then doesn't

Tiny
AUTOIMAGE1
  • MEMBER
  • 1999 GMC SONOMA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 128,198 MILES
I have a '99 gmc sonoma fuel system/guage problem. When I turn on the key the fuel guage go's to full then after a a couple of minutes it go's to empty then after a while it go's to full again. Is it a ground problem, a guage, or the fuel level sending unit problem
Do you
have the same problem?
Yes
No
Friday, April 22nd, 2011 AT 1:52 PM

3 Replies

Tiny
RASMATAZ
  • MEMBER
Check and test the fuel sending unit
Was this
answer
helpful?
Yes
No
Friday, April 22nd, 2011 AT 5:25 PM
Tiny
AUTOIMAGE1
  • MEMBER
The fuel pump does works & truck runs, its the fuel gauge reading doesn't show correct fuel reading. Right now the truck has approx. 1/2 a tank, but when I start the truck the fuel gauge shows full then after about minute it shows empty.I've cleaned up the ground wire at the left rear of the truck but it didn't fix it
Was this
answer
helpful?
Yes
No
Friday, April 22nd, 2011 AT 5:54 PM
Tiny
AUTOIMAGE1
  • MEMBER
I ordered a New Fuel Level Sensor (the float part of the fuel pump unit)
Was this
answer
helpful?
Yes
No
Friday, April 22nd, 2011 AT 6:01 PM

Please login or register to post a reply.

Recommended Guides