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1999 Chevy Suburban Fuel pump noise

Tiny
PEATTERR
  • MEMBER
  • 1999 CHEVROLET SUBURBAN
  • V8
  • 4WD
  • AUTOMATIC
  • 81,000 MILES
The fuel pump on my 1999 Suburban 1500 makes a high pitch noise when the truck is running, the Mechanic says it is normal that all suburban’s make that noise, is this true? Or is my fuel pump about to go out?
Thursday, August 28th, 2008 AT 11:27 AM

2 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Your are right high pitch whine usually indicate iminate pump failure. It could be the filter if it has more than 30K on it. The resistance to fule flow will cause pump to whine.
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Thursday, August 28th, 2008 AT 11:38 AM
Tiny
RED-TOP
  • MEMBER
  • 4 POSTS
I have a 1999 suburban that had an abnormally high pitch to the pump since I bought it with 33,500 on it. Pump finally failed at 117,000. A very good idea to replace filter every 30,000 miles and never run fuel tank less than 1/4 full. That pump uses fuel to cool itself.. Mark
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Wednesday, September 3rd, 2008 AT 11:16 AM

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