Question about 1995 Cadillac DeVille
Front seating area, passenger side, under dash, mounted above kick panel
Posted on May 25, 2010
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
When the term Electronic Control Module (ECM) is used in this guide it will refer to the engine control computer regardless that it may be a Vehicle Control Module (VCM), Powertrain Control Module (PCM) or Engine Control Module (ECM).
The Electronic Control Module (ECM) is required to maintain the exhaust emissions at acceptable levels. The module is a small, solid state computer which receives signals from many sources and sensors; it uses these data to make judgments about operating conditions and then control output signals to the fuel and emission systems to match the current requirements.
Engines coupled to electronically controlled transmissions employ a Powertrain Control Module (PCM) or Vehicle Control Module (VCM) to oversee both engine and transmission operation. The integrated functions of engine and transmission control allow accurate gear selection and improved fuel economy.
In the event of an ECM failure, the system will default to a pre-programmed set of values. These are compromise values which allow the engine to operate, although at a reduced efficiency. This is variously known as the default, limp-in or back-up mode. Driveability is almost always affected when the ECM enters this mode.
Fig. Fig. 2: ECM mounting scheme-1996 models
The ECM is located in the passenger side footwell in the kick panel up to 1996. In 1996, the ECM is located in the engine compartment next to the battery.
Jun 30, 2012 | 1993 GMC Safari
The Vehicle Speed
Sensor 1 (output shaft rotation sensor) is mounted to the extension case
(from the outside of the case). The sensor outputs a pulse signal which
is transmitted to the TCM where it is converted to vehicle speed.
The transfer clutch
drum is connected directly to the rear wheel driving propeller shaft.
Vehicle speed sensor 1 on the AWD model detects rear-wheel speed.
Speed Sensor 2 provides vehicle road speed information to the ECM. The
ECM uses this data to properly determine ignition and fuel delivery
curves. The sensor consists of a reed switch and magnetic rotor turned
by the speedometer cable.
One rotation of the
magnetic rotor opens and closes the reed switch four times, producing a
digital signal which is converted to vehicle speed by the ECM. The
sensor operates whenever the vehicle is moving with ignition ON. As the
transmission rotates, the speed sensor sends a pulsed on/off signal to
The speedometer uses VSS 2 for it's signal.
Hope this helps (remember to rate this answer).
May 24, 2011 | 1997 Subaru Outback
Mar 12, 2011 | GMC Jimmy Cars & Trucks
Feb 19, 2009 | 1999 Isuzu Rodeo
Oct 21, 2008 | 1991 Oldsmobile Ninety Eight
Oct 04, 2008 | 1996 Chevrolet Suburban
57 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: