FUEL PUMP - '98 GMC SAFARI

  • Tiny
  • pjgreen1@comcast.net
  • 1998 GMC Safari
  • 6 CYL
  • AWD
  • automatic
  • 118,000 miles

GMC Safari '98. Fuel pump starts making high pitched sound. OBD = PO452. Then goes away. Also, fuel gauge needle vibrates at a high rate that just makes needle look fat. Gauge goes extreme right and off scale when key first turned on. Fuel pump is only 8 months old and still warrantied, but is very hard to remove as you know. Any thoughts?

Tuesday, August 9th, 2011 AT 8:13 PM

1 Answer

  • Tiny
  • hmac300
  • Expert
  • 42,069 posts

Code 452 is low voltage to fuel pressure sensor which is in the tank. I d check for a grounded wire along the harness. Maybe it's become pinched since the install of the new pump.

Was this
answer
helpful?
Yes
No
Tuesday, August 9th, 2011 AT 8:50 PM

Please login or register to post a reply.

Similar Questions