EGR Problem

EGR valve sticking open at idle is usually accompanied by a rough idle and/or stalling. If Code 45 is intermittent, see INTERMITTENTS in TESTS W/O CODES article in this section.

Fig 1: Code 45 Schematic (4.3L Turbo) Rich Exhaust Indication

Fig 2: Code 45 Flow Chart (4.3L Turbo) Rich Exhaust Indication