* Inability to shift gears: The car may refuse to shift out of park, or it may not shift properly through the gears.
* Transmission problems: The transmission may act erratically or fail to function correctly.
* Incorrect speedometer readings: The speedometer may be inaccurate or not work at all since the transmission range switch is often used for speed sensing.
* Check Engine Light: The E41 code will usually illuminate the Check Engine Light.
What to do:
1. Check the wiring: Before replacing the switch, inspect the wiring harness and connector for any damage, corrosion, or loose connections to the transmission range switch. A simple loose connection could be the cause.
2. Replace the Transmission Range Switch: If the wiring looks good, the switch itself is likely faulty and needs replacing. This is often the most effective solution. This is usually a relatively straightforward repair, but you might need some mechanical aptitude or the assistance of a mechanic.
3. Professional Diagnosis: If you're not comfortable working on your car yourself, take it to a qualified mechanic or Cadillac specialist. They have the proper tools and expertise to accurately diagnose and repair the problem. They can also confirm the diagnosis and rule out other potential issues.
Important Note: Driving with a faulty transmission range switch can lead to further damage to your transmission. It's best to address this problem promptly.
