Q: EGR System

Replacing an engine does require some extensive work that can take some time. The cost will vary by shop as each shop has a different labor rate per hour. If you know what the labor rate of a shop is...

Hesitation upon acceleration usually means the air/fuel mixture is lean or that there is an ignition misfire under load. Any of these conditions should set a diagnostic trouble code (DTC) and turn on the Check Engine Light. Retrieving the DTC...

The TPS controls the fuel supply in all modes. Changing the mode will not bypass the TPS as this is the car's method of regulating the amount of fuel being injected into the motor based upon the position of your...

That sounds pretty scary. The problem you are experiencing isn't very common, but I'd try to see if there are technical service bulletins (https://www.yourmechanic.com/article/how-to-use-a-technical-service-bulletin-tsb-to-diagnose-and-repair-a-car-by-valerie-johnston) regarding the issue and the experts at Cadillac are trying to find a solution. The problem...

Hello. If multiple electronic systems are not working in your vehicle after hitting a bump, it is possible that some serious damage has occurred to the vehicle that will need to be checked. I would recommend having a mechanic assess...

Hi, thanks for writing in. If your AC system is leaking and it will not accept a charge it is either because the AC system is overcharged or it is leaking (https://www.yourmechanic.com/article/how-to-find-the-source-of-an-oil-leak-by-ed-ruelas). Both of these symptoms will cause the air...

This should not have anything to do with the oil changed that was performed, however occasionally, parts get left unbolted or become loose and can drag on ther ground causing a scraping or rattling noise. This can also happen sometimes...

When you have a lot of play in the steering then you should have the entire steering system checked for loose or worn steering tie rod ends.

You will need to lift truck to see of any of the wheels brakes are locking up? If you find the front brakes are locking up then crack loose one line at a time at the master cylinder to see...