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 MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 5 (COMPUTER RELEARN PROCEDURES)CHRYSLER CORP.SKIM MODULE (SEBRING CONVERTIBLE, SEBRING SEDAN & STRATUS SEDAN)INITIALIZATION PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Initialization Procedure
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Initialization Procedure
WARNING: This page does not describe the selected car, but rather 98 other vehicles, including the 2001 Saturn SW2, 2001 Saturn SL2, 2001 Saturn SL1, 2001 Saturn SL, and 2001 Saturn SC2. However, it is still accessible from the selected car via links, so may be relevant.
- Obtain vehicle's unique PIN number assigned to it's original SKIM module from vehicle owner or Chrysler's customer center.
- Using scan tool, select THEFT ALARM, SKIM, then MISCELLANEOUS. Select SKIM MODULE REPLACED function.
- Enter SECURED ACCESS mode using unique 4-digit PIN number.
- Program vehicle's VIN number into SKIM's memory.
- Program country code into SKIM's memory (U.S.).
- Transfer vehicle's unique Secret Key data from PCM. This process will require SKIM module to be in SECURED ACCESS mode. PIN number must be entered into scan tool before SKIM will enter SECURED ACCESS mode. Once SECURED ACCESS mode is active, SKIM will remain in that mode for 60 seconds.
- Program all customer keys into SKIM's memory. This requires that SKIM be in SECURED ACCESS mode. SKIM will immediately exit SECURED ACCESS mode after each key is programmed.
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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.