Joined
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4 Posts
Just wanted to say hello to everyone. I'm Steve and have been the owner of a 99 GMC Suburban 2500 454 2wd for that last 5 years. I joined the site to help in my quest to tackle fault codes. I've searched some posts on the p0452 & p0453 Evap codes and gained some info.
a. Seal fuel pump gasket ring with lube
b. Change pigtail harness on pump
c. ensure no moisture is inside connector
I have the 4 volume 99 FSM set. I changed the fuel pump out about a year ago along with the pigtail harness supplied. Code never showed up until about 6 months ago. Emissions is due. In the last week I've installed a new gas cap and cleaded codes, no change. Cant shake p0452, comes back on startup.
I could try:
dropping tank and checking for vacuum leaks on the evap hose.
check 5v on pressure switch
install another $200 pump assembly (that sucks)
Any other suggestions?
Thanks for looking, Steve
1986 GLHS #295
1991 Daytona ES 2.5 N/A (#1 sons ride)
1989 Daytona ES 2.5 TI (#2 sons ride)
1983 Dodge Rampage Prospector (out of paint 12-5-2010) converting to TII & Charger ground effects
1999 GMC Suburban 454 2wd
2005 Chrysler 300 Touring AWD
Triangle, VA
a. Seal fuel pump gasket ring with lube
b. Change pigtail harness on pump
c. ensure no moisture is inside connector
I have the 4 volume 99 FSM set. I changed the fuel pump out about a year ago along with the pigtail harness supplied. Code never showed up until about 6 months ago. Emissions is due. In the last week I've installed a new gas cap and cleaded codes, no change. Cant shake p0452, comes back on startup.
I could try:
dropping tank and checking for vacuum leaks on the evap hose.
check 5v on pressure switch
install another $200 pump assembly (that sucks)
Any other suggestions?
Thanks for looking, Steve
1986 GLHS #295
1991 Daytona ES 2.5 N/A (#1 sons ride)
1989 Daytona ES 2.5 TI (#2 sons ride)
1983 Dodge Rampage Prospector (out of paint 12-5-2010) converting to TII & Charger ground effects
1999 GMC Suburban 454 2wd
2005 Chrysler 300 Touring AWD
Triangle, VA
