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.
After Blow Mode
The Instrument Panel Module (IPM) can be programmed to operate the blower motor for 4 minutes after the vehicle engine has been shut off. This blower operation dries evaporator core which reduces the amount of microbial growth and undesirable odors. The after blow mode must be enabled by a scan tool. In order for the IPM to operate the blower motor in after blow mode, ambient air temperature must be 70°F (21°C) or more. A/C compressor must have been operating for more than 3 minutes, the engine has been turned off for 45 minutes and system voltage must be 12 volts or more. See AFTER BLOW ENABLE PROCEDURE under PROGRAMMING.
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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.