P0380? [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: P0380?


MaxRoadArmor
01-29-2007, 09:22 PM
the P0380 code (glow plug feedback circuit A), would that be a sign that i have 1 or morw bad glow plugs one one side? feedback circuit sounds like it is getting feedback from the glow plugs!? im not sure though, just wanted some input.

Dieselson
02-01-2007, 11:48 PM
Its a sign of bad glow plugs. After months of seeing this code, it is finally starting to affect me, with a rough idle.

MaxRoadArmor
02-02-2007, 12:17 AM
yeah mine will go off for a lil while but come right back on, its been on for like 2 months. how easy/hard are glow plugs to replace? there located near the manifold right?

mvnvltn
02-02-2007, 12:25 AM
they are where spark plugs would be on a gasser.

MaxRoadArmor
02-02-2007, 01:43 PM
anybody know which side feedback circuit A connects to?

schulte
02-02-2007, 02:06 PM
This code ended up being a bad glowplug CONTROLLER for me....

MaxRoadArmor
02-02-2007, 06:04 PM
so i guess i need to bite the bullet and pay to get it hooked up to the tech 2 scanner huh? i still think it may be a glow plug or two going bad cuz sometimes the wait to start light stays on as if it were cold even after its been warmed up, also noticed sparatic rough idle, it comes and goes.

kappelmd
02-02-2007, 06:15 PM
This code ended up being a bad glowplug CONTROLLER for me....

X2 on the Controller, that what caused my P0380 as well; however, search on heare for glow plugs. Several have replaced their glow plugs and/or glow plug relay as well.

Remember to remind your dealer, before you pay, that the glow plug components are covered by the emission warranty as well. You should not have to pay the $100 deductible.