* Transmission Problems: This is the most likely culprit. Issues within the automatic transmission could include:
* Low Transmission Fluid: Check the transmission fluid level and condition. Low fluid or fluid that's burnt, dark, or smells bad indicates a serious problem.
* Internal Transmission Failure: Worn clutches, bands, or other internal components can prevent gear changes. This is often accompanied by other symptoms like slipping, rough shifting, or noises from the transmission. This is a major repair.
* Valve Body Problems: The valve body controls fluid flow within the transmission. A malfunctioning valve body can prevent the transmission from shifting correctly.
* Torque Converter Issues: The torque converter connects the engine to the transmission. Problems with it can prevent power transfer and gear changes.
* Shift Linkage Problems: The linkage connects the shifter to the transmission. Issues here could be:
* Broken or Disconnected Linkage: Inspect the linkage for any broken or loose components.
* Bent or Damaged Linkage: A bent or damaged linkage can prevent the transmission from receiving the correct shifting signals.
* Shift Solenoids (if applicable): These are electromagnets that control the shifting within the transmission. A faulty solenoid can prevent the transmission from shifting. This is more likely a problem *in addition* to a transmission fluid or valve body problem.
* Computer/PCM Issues: While less common, a problem with the Powertrain Control Module (PCM) could interfere with the transmission's operation. A faulty PCM won't necessarily *prevent* the shifter from moving, but could prevent the correct signals from reaching the transmission.
Troubleshooting Steps:
1. Check Transmission Fluid: This is the easiest and first step. Check the level and condition of the fluid. If it's low, add fluid (the correct type for your transmission is crucial – check your owner's manual). If it's dirty or smells burnt, you likely have a more serious problem.
2. Inspect Shift Linkage: Carefully examine the linkage connecting the shifter to the transmission. Look for any broken, bent, or disconnected parts.
3. Listen for Noises: Pay close attention to any unusual noises coming from the transmission, such as whining, grinding, or clunking. These can help pinpoint the source of the problem.
4. Professional Diagnosis: If the problem isn't immediately obvious after checking the fluid and linkage, it's best to take your Sebring to a qualified mechanic or transmission specialist for a proper diagnosis. They have the tools and expertise to identify the exact cause of the issue. This is especially important if the fluid is low or dirty.
Ignoring the problem could lead to further damage and a much more expensive repair. Get it checked out soon.
