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B0078 - Right Front/Passenger SIS Malfunction Code in an 01 Cadillac STS. The light will randomly come on and the go back away, sometimes it does it constantly other times it can go weeks with out doing it. Why is this

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  • 2 Answers

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Posted on Jan 02, 2017

  • 4 Answers

SOURCE: 1999 Cadillac STS

first u have to ask yourself what type of maintenance have u done via fuel filter ect,,get presure on rail check if it does not read right check regulator if you here an irreguler humm from your fuel pump will usually give you warnnin it is going out with change of this filter. I recomend!!!change the regulator with this repair.

Posted on Nov 04, 2008

  • 232 Answers

SOURCE: 1995 Cadillac STS 3rd brake light OUT?

No it wouldn't be a fuse because it's partially still working,LEDs are wired in series so it could be one LED is burnt out or the current limiting resistor has opened for that section.Repairing it would be fairly simple but will require a multimeter preferably with a diode tester and a soldering iron.If you're not familiar with using a multimeter and testing electronic circuits I would say let a professional repair it or replace the whole unit.Comment back and I will give you the test procedures if you fell confident in making the repair.

Posted on May 28, 2009

  • 365 Answers

SOURCE: 1998 cadillac seville sts air ride prob

Disconnect the - battery terminal for a minute and reconnect.
Good Luck

Posted on Jun 14, 2009

  • 1 Answer

SOURCE: abs light/traction control light

You can check out what the trouble code is by pushing and holding the information button and the up arrow (right side of instrument cluster above the radio) until all the instrument clusters light. Press the information button (last) to enter test mode. I've had an error C1234, meaning Left rear wheel sensor fault. I found the problem to be a corroded connector under the chasis just under the rear left door about 2 feet in. I had to by-pass (replace 1 wire due to corrosion at the connector.

Posted on Sep 15, 2009

  • 474 Answers

SOURCE: 01 cadillac seville sts

It defanetly sounds like a sending unit and the fuel tank needs to be removed in order to replace it and it will most likely come with a new fuel pump too.They come as a unit and there not cheap. Sorry.

Posted on Feb 06, 2010

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