Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1995 Buick LeSabre V6-3.8L VIN KFACTORY OEM SERVICE PROCEDURE
PCM Connector E-F (Blue)
POWERTRAIN CONTROL MODULE (PCM) VOLTAGE CHART
This PCM voltage chart is for use with a digital voltmeter to further aid in diagnosis. The voltages you get may vary due to low battery charge or other reasons, but they should be very close. The B+ symbol indicates a nominal system voltage of 12-14 volts.
CONDITIONS FOR TESTING
^ Engine at operating temperature (upper radiator hose hot).
^ Engine idling in "Closed Loop" (for "Engine Run" column) in park or neutral.
^ Test terminal not grounded.
^ Scan tool not installed.
^ Accessories "OFF."
NOTE: Before checking voltages, be sure PCM and engine grounds are clean and tight.
CHART LEGEND
* Less than 0.5 volts.
** If equipped.
*** Foot off brake.
(1) B+ for 1st 2 seconds.
(2) Varies.
(3)Varies with temperature.
BLUE 32 PIN CONNECTOR
This PCM voltage chart is for use with a digital voltmeter to further aid in diagnosis. The voltages you get may vary due to low battery charge or other reasons, but they should be very close. The B+ symbol indicates a nominal system voltage of 12-14 volts.
CONDITIONS FOR TESTING
^ Engine at operating temperature (upper radiator hose hot).
^ Engine idling in "Closed Loop" (for "Engine Run" column) in park or neutral.
^ Test terminal not grounded.
^ Scan tool not installed.
^ Accessories "OFF."
NOTE: Before checking voltages, be sure PCM and engine grounds are clean and tight.
CHART LEGEND
* Less than 0.5 volts.
** If equipped.
*** Foot off brake.
(1) B+ for 1st 2 seconds.
(2) Varies.
(3)Varies with temperature.
BLUE 32 PIN CONNECTOR
32 Pin E-F Connector (BLUE):
Powertrain Control Module (PCM) Connector (Blue E-F):
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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