1. Visual Inspection:
* Locate the Cable: The shifter cable runs from the shifter lever inside the vehicle to the transmission. You'll likely need to get under the vehicle to see the cable's connection at the transmission. A repair manual specific to your 2005 Saturn Vue will greatly help in pinpointing its location. Consult a repair manual or online resources with diagrams.
* Check for Damage: Look for any obvious signs of damage to the cable housing (outer covering):
* Kinks or Bends: Severe bends or kinks can restrict movement.
* Tears or Cuts: Breaks in the outer housing allow the inner cable to fray or become damaged.
* Corrosion: Look for rust or significant dirt buildup.
* Loose Clamps or Mounts: Ensure the cable is securely fastened at all mounting points.
* Inspect the Connections: Carefully examine both ends of the cable where they connect to the shifter lever and the transmission. Look for any signs of looseness, damage, or corrosion at the connection points.
2. Functional Test:
* Shift Through the Gears: With the engine OFF, manually shift the gear selector through all the gears (Park, Reverse, Neutral, Drive, etc.). Pay close attention to:
* Smoothness: Does the shifter move smoothly through each gear, or is there any binding or resistance? A stiff or difficult shift suggests a problem with the cable or linkage.
* Positive Engagement: Does each gear engage firmly, or does it feel vague or uncertain? Poor engagement points towards a cable issue or other transmission problems.
* Check for Cable Movement: While shifting, try to observe the cable at the transmission end (you might need a helper). It should move smoothly and freely with each gear change. If it's binding or not moving correctly, it indicates a problem.
* Listen for unusual noises: Clunks, pops, or other unusual noises during shifting could be related to a damaged or improperly adjusted cable.
Important Notes:
* Safety First: Always engage the parking brake before working under the vehicle. Use jack stands for safety, never rely solely on a jack.
* Repair Manual: A factory service manual is invaluable for detailed diagrams and specific procedures. It will help you identify the cable, access points, and proper adjustments (if needed).
* Professional Help: If you're uncomfortable working under your vehicle or are unsure about the condition of the cable, take your Vue to a qualified mechanic for diagnosis and repair. A faulty shifter cable can lead to dangerous driving situations.
If you find damage to the cable or suspect a problem, replacement is usually necessary. This is often best done by a mechanic due to the complexity of the procedure and the need for precise re-adjustment.