Quote:
Originally Posted by Bonestock3ott
Just recently had this issue on a 2003 GMC, After watching some videos on you tube, Eric at South main auto is a good resource I purchased a reasonably priced bi directional scanner. With this unit I was able to confirm the vent solenoid was bad ( replaced that part 4 years prior). The money light came back on some more testing and the fuel pressure sensor was not functioning ( fuel pump replaced about 2.5 years ago with a non oem pump assembly and had a cheap sensor ). Replaced sensor and drove the truck long enough for to pass a new York state inspection. Just remember Just because a part is new does not mean it is good.
|
NEW is an acronym. Never Ever Works.
Not quite as bad as that but sometimes it seems like it's close on some parts.
I have thought about running the intake side of the vent valve up to the clean side of the air filter box.
I've run the vents from the charcoal can, axles, transfer case, and transmission up to the clean side of the air filter on my trail rig using Ni-Copp and rubber lines.
__________________
1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8
RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.