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Pcm Code E039, VCC Engagement Problem (1 Of 2): Action

PCM turns on SERVICE ENGINE SOON light and remains on for ignition cycle. VCC is disabled for ignition cycle.

NOTE: Test number refers to number on diagnostic chart.
  1. Flow chart will test resistance of VCC solenoid and wiring inside transmission. Road test checks for proper transmission operation.
CODE E039 PCM VOLTAGE CHECK

PCM Terminal Condition 1 Condition 2
C4 BRAKE APPLIED 0 to 0.3 Volts BRAKE RELEASED Battery
F6 VCC ON 0 to 0.3 Volts VCC OFF Battery
F5 VCC MOD ON 0 to 0.3 Volts BRAKE RELEASED Battery
RPM SLIP FAULT

M P H 3.33 FINAL DRIVE RATIO RPM NO SLIP 3.33 FINAL DRIVE RATIO RPM FAULT 2.97 FINAL DRIVE RATIO RPM NO SLIP 2.97 FINAL DRIVE RATIO RPM FAULT
40 1200 1550 1090 1450
48 1450 1850 1300 1700
56 1700 2125 1500 1950
64 1950 2375 1700 2175
72 2200 2650 2000 2500
80 2400 2850 2200 2675
Fig 1: PCM Code E039, Schematic, VCC Engagement Problem
G92H05039Courtesy of GENERAL MOTORS
Fig 2: PCM Code E039, Flow Chart VCC Engagement Problem (1 Of 2)
G92D05042Courtesy of GENERAL MOTORS
Fig 3: PCM Code E039
GB0011192