1978 Cadillac Seville - Answered Questions & Fixed issues

the automatic choke is working and thats why it does that because the car hasn't been cranked and its cold natured. this is normal for older cars and trucks with regular carbs.

Contact Authorized Service Station. You may also call their Helpline.

try points seting

on brake pedal bracket under dash disconnect wiring remove switch -replace

their is none

your damper control has a problem

Videos and text based articles. They are nearly always to the left and right of the centre console under the dash. https://www.google.com/search?q=1994+cadillac+seville+sts+replace+blend+door+actuator ..

Could be the interlock brake switch . don't guess an just replace parts . You don't know how to test , take it to someone who can .

The Haynes repair manuals are very good about showing the wiring diagrams for all wired connections. You can go to or contact the dealership and ask if they have one for free. Most wiring diagrams are going to cost if you have lost your owners manual.

that is what I would look at especially if have to make up coolant level

This series of videos should help you... you can jump by clicking on the small screen shots to the right. Transmission Fluid Level Check Cadillac Seville 1998 2004 2003 Cadillac... Transmission dipstick is under the air intake and is a black plastic plug that unscrews the arrow in the photo shows the general area ..lift off the air intake for access.

The best solution you'll get from books at www.reliable-store.com These are books containing info on repair, service, troubleshooting, par ts info, assembling dissemble, removal, error/fault codes, wiring diagrams and everything on any vehicles cars, atv, trucks. forklifts, boats, excavators etc

You should check out www.reliable-store.com they have info on repair, service, wiring diagram, electrical diagram, fuse diagram, troubleshooting, PCV, owner's/service/repair/parts manual, fault codes, error codes, etc everything on all vehicles. must check it out

Most likely coolant sensor.

Replace the faulty switch.

What year is the vehicle ?

Does sound like fuel related change filter see if helps also check all tune up items

Buy Haynes manual, Google search it or ask at Autozone for printout.

it means there is a fault with the immobilizer, its not sending a signal to say its armed or disarmed, if you have had work done on the ecu it will probably be done to that work being done.

Cooling fan switch ?????? Has a engine coolant temp. sensor , That inputs info to the PCM/ECM - engine computer ! The PCM / ECM interpits the voltage signal from software programmed into it as to what temp . of the coolant is . When the engine coolant temp. reaches The PCM commands the low-speed fans ON under the following conditions: • The engine coolant temperature exceeds approximately 106°C (223°F). • The transmission fluid temperature exceeds 150°C (302°F). • The A/C pressure reaches 199 psi (1372 kPa). The cooling fans will switch from low to OFF when the coolant temperature drops below 102°C (216°F). The PCM commands the high-speed fans ON under the following conditions: • The engine coolant temperature reaches 112°C (234°F). • The transmission fluid temperature is more than 151°C (304°F). • The A/C pressure reaches 260 psi (1792 kPa). • Certain DTCs are set. The cooling fans will switch from high to low, except when DTCs are set, when the coolant temperature drops below 106°C (223°F). The PCM turns on the cooling fans by energizing three different relay's . Watch this video Relay Driven Dual Cooling Fan Diagnostics