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.
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HOMESERVICE MANUALSCHRYSLER2003300M V6-3.5L VIN MREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSCAMPAIGN - POWERTRAIN CONTROL MODULE REPLACEMENTSERVICE PROCEDUREC. REPLACE PCM - PT VEHICLES
2003 Chrysler 300M V6-3.5L VIN M
C. Replace PCM - PT Vehicles
2003 Chrysler 300M V6-3.5L VIN MSECTION C. Replace PCM - PT Vehicles
1. Disconnect the negative battery cable.
NOTE:
To enhance customer satisfaction, remember to reset the clock when you have completed the service procedure.
2. Disconnect the four (4) PCM electrical connectors and set the wiring harness aside (Figure 3).
3. Disconnect the two (2) wiring harness clips from the PCM bracket
4. Remove the four (4) PCM mounting bracket screws and then remove the PCM and mounting bracket assembly (Figure 3).
5. Remove the three (3) PCM bolts, then remove the PCM and discard it.
6. Install the new PCM onto the mounting bracket. Tighten the mounting bolts to 105 in-lbs (11.8 Nm).
7. Install the PCM and bracket assembly (Figure 3). Tighten the mounting bolts to 95 in-lbs (10.7 N.m).
8. Connect the four (4) PCM electrical connectors (Figure 3).
9. Attach the wiring harness clips to the PCM bracket.
10. Connect the negative battery cable.
11. Continue with Section E - PCM/Vehicle Data Set-up.
NOTE:
To enhance customer satisfaction, remember to reset the clock when you have completed the service procedure.
2. Disconnect the four (4) PCM electrical connectors and set the wiring harness aside (Figure 3).
3. Disconnect the two (2) wiring harness clips from the PCM bracket
4. Remove the four (4) PCM mounting bracket screws and then remove the PCM and mounting bracket assembly (Figure 3).
5. Remove the three (3) PCM bolts, then remove the PCM and discard it.
6. Install the new PCM onto the mounting bracket. Tighten the mounting bolts to 105 in-lbs (11.8 Nm).
7. Install the PCM and bracket assembly (Figure 3). Tighten the mounting bolts to 95 in-lbs (10.7 N.m).
8. Connect the four (4) PCM electrical connectors (Figure 3).
9. Attach the wiring harness clips to the PCM bracket.
10. Connect the negative battery cable.
11. Continue with Section E - PCM/Vehicle Data Set-up.
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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.