Cadillac DeVille Dies After Starting Diagnosis

It can be very disconcerting if your Cadillac DeVille is starting and then dies.  It is most likely caused by some type of issue with the electrical or fuel system.  But, there can be other causes as well. Your DeVille’s engine needs 3 things constantly and in the proper proportion to keep running. Air Fuel … Read more

Cadillac DeVille: Shaking When Accelerating → Diagnosis

One of the more common issues that can occur is a vehicle that shakes when accelerating.  If your Cadillac DeVille is shaking when accelerating, it’s something that should not be ignored.  While the vibration can be annoying, it is often indicative of a serious problem.   Speed Matters Vehicle speed matters when you feel a … Read more

Cadillac DeVille:  Lifter Ticking Diagnosis

One of the most annoying things that you can coming from under the hood of your Cadillac DeVille is a ticking lifter.  The ticking noise makes it sound like the engine is going to give up the ghost at any time.  There are a few things that can cause a lifter to tick, such as … Read more

Cadillac DeVille: P0171 and P0174 Diagnosis

P0171 and P0174 both indicate that there is a lean condition present in your Cadillac DeVille.  By themselves, these are some of the most common OBD2 codes.   When they appear together, it indicates that the entire engine is running lean. Definition Both of these codes are generic, which means they have the same meaning … Read more

Cadillac DeVille:  Clutch Slipping → Diagnosis

Your Cadillac DeVille’s clutch provides a direct connection between the engine and transmission.  Without it, it can’t move at all. This connection requires a tremendous amount of pressure.  This guide is intended to help you determine why your clutch is slipping on the flywheel. Note:  This article is for manual cars only.  Here’s the automatic … Read more

Cadillac DeVille:  Brake Pedal Going to Floor Diagnosis

The single most important safety feature in your Cadillac DeVille is a good set of brakes.  If your brake pedal is going to the floor, it indicates that there is a serious problem in the braking system.  When the pedal goes to the floor, it’s usually caused by a bad master cylinder, leaking brakes, bad … Read more

Cadillac DeVille Shifting Hard: Causes + Diagnosis

One of the most common automatic transmission problems is shifting hard.  If your Cadillac DeVille has a hard shifting transmission, it can be uncomfortable to drive and a sign of serious problems. If your car’s transmission is shifting hard, it can cause a harsh ride and lead to potential damage over time. Numerous factors can … Read more