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.
Sentry Key Immobilizer Module: Description
The sentry key immobilizer Module (SKIM) (Fig 1 ) contains a radio Frequency (RF) transceiver and a central processing unit, which includes the sentry key immobilizer system (SKIS) program logic. The SKIS programming enables the SKIM to program and retain in memory the codes of at least two, but no more than eight electronically coded sentry key transponders. The SKIS programming also enables the SKIM to communicate over the programmable communication interface (PCI) bus network with the powertrain control module (PCM), and/or the DRBIII(R) scan tool.
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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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