My Cadillac Escalade just got returned to me from the sho...

Q: My Cadillac Escalade just got returned to me from the shop, because it wouldn’t start. They said they replaced the computer, but n

asked by on October 28, 2017

My Cadillac Escalade just got returned to me from the shop, because it wouldn’t start. They said they replaced the computer, but nOw the check engine light is on. The other day the dashboard lights were off, no reading on anything even though the truck was on and moving, but about a minute into driving, everything turned on, as did the check engine. The place where mileage can be seen flashes random alerts like that the lift gate fuse needs replacing or service tire monitor. The truck seems like it runs perfectly fine, I’m just wondering if the mechanics might have set up whatever this new computer was wrong, or if it’s just fuses, or is the engine really the one that needs a check up?

My car has 156000 miles.
My car has an automatic transmission.

This sounds like you have electrical connection issues with the dash or body control module. These vehicles are known to have electrical connection corrosion buildup that caused these erratic electrical problems including no starts and running issues. This problem will need to be isolated and electrical connections cleaned and apply a dielectric to connectors to fix connectors at all the modules to include the instrument cluster.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

I'm looking for a quote to replace the timing chain on a S4 4.2L

Hi there, thanks for writing in. He was correct in saying that the chains are on the back of the motor. The engine and transmission must be removed completely, then separated form one another on a workbench, where the chains...

Dash lights flashing on while driving

Hello, thank you for writing in. Electrical issues can be incredibly difficult to diagnose. Typically when every dash light turns on, there is an issue with the main power supply. This means an issue with the battery, alternator, wiring, or...

HID headlight flickers

If your vehicle has HID headlights, they will also have a part that is connected to the bulb called a ballast. The ballast controls the temperature at which the HID bulb burns. If the ballast is malfunctioning, this can cause...

Related articles

How a Battery Works With a Car's Electrical System
Have Have you ever wondered how your car’s electrical system works? It all starts with your car battery. Your car's electrical system operates on a closed circuit, with the main power system being the automotive battery. It uses less than...
Cadillac Certified Pre-Owned (CPO) Car Program
Drivers Drivers who are shopping around for the perfect used Cadillac may want to check out cars under their certified pre-owned program. Many manufacturers have a certified pre-owned (CPO) program, and each one is set up differently. Read on to...
The Top 8 Things That Will Drain Your Car Battery
Your car battery could keep dying from a variety of reasons such as age, a bad alternator, human error, and more.