2007-03-19 17:18:24 · 3 answers · asked by George B 2 in Cars & Transportation ➔ Car Makes ➔ GMC
This pretty typical with all GM trucks, starting from the mid 90's well into the 2000's. The pumps fail prematurely due to excessive heat buildup by the pump motor. The OE ones seem to fail quickly, especially in fleet applications. Around 80,000 miles problems begin to arise. This starts with hard starting when the vehicle sits. What the pump is doing is bleeding off pressure when it sits. Another cause is the fuel pressure regulator diagphram failing also.
2007-03-20 14:55:04 · answer #1 · answered by Anonymous · 0⤊ 0⤋
I have replaced A LOT of fuel pump on these vehicles. They do have some fuel pump issues for sure.
2007-03-20 14:49:10 · answer #2 · answered by Mr. Badwrench 6 · 0⤊ 0⤋
Yes George they are.The fuel lines inside the tank are breaking down and leaking fuel as to not have enough fuel pressure to start.The merry go round effect of internal re-cycling.
2007-03-19 19:18:19 · answer #3 · answered by (A) 7 · 0⤊ 0⤋