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janselmosr

janselmosr 8/18/2013

1998 Cadillac Seville STS 8 Cyl 4.6L

Body & Interior

When A/C is turned on it does not come on until car goes over a bump in the road, then it works fine

Same problem with the heater in the colder weather

2 Answers


Jimm

Jimm 8/18/2013

Check the fuses and wiring / connections, as well as the relays for a loose connection.

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wbrockstar

wbrockstar 8/19/2013

After checking items previously mentioned,dont forget to check the resistor for the blower motor and the motor itself.Its the part under your dash(passenger side) that has a couple screws attaching it to the black housing which holds the ac/heater components

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