My silverado has roughly 110,000 miles on it. When driving it'll let me get up to 33mph then act like its in neutral. Once I slow down to about 25mph it'll let me speed back up to 33mph then go back into neutral. The shifter does not move, it doesn't shift hard, doesn't feel like the Trans is slipping. I have tried taking the negative terminal off the battery and letting it sit for a while to let it reset and it still does it. Does anyone have any idea what's going on? Any and all help will be greatly appreciated. Thanks in advance.

 

well that can only be transmission issue. Have you checked on the fluid? Was the fluid or filter every changed?

 

No, I haven't checked the field or changed it since I've gotten it.

 

gotta do it every 60k, or less if you tow.

 

I was always told if you don't keep up with it don't mess with it. I'm afraid if I do it now I'll really mess it up.

 

well now it won't matter because it's probably finished

 

I understand your concern about your Silverado's strange behavior at 33mph. While I can't diagnose the exact issue remotely, here are some possible causes and troubleshooting steps based on the information you provided:

Possible causes:

• Torque converter clutch: A malfunctioning torque converter clutch can cause hesitation or loss of power at specific speeds.
• Shift solenoid: A faulty shift solenoid could be preventing the transmission from shifting properly at a particular gear (around 33mph in your case).
• Transmission sensor: A malfunctioning sensor could be sending incorrect information to the transmission computer, causing erratic behavior.
• Wiring harness: Damaged or loose wiring in the transmission control system could disrupt communication and lead to shifting issues.

Troubleshooting steps:

1. Check for trouble codes: Connect your Silverado to an OBD-II scanner and see if any trouble codes are stored in the transmission computer. These codes can point you towards the specific component causing the problem.
2. Inspect the transmission fluid: Check the transmission fluid level and condition. Low or dirty fluid can lead to shifting problems.
3. Consult a mechanic: If you're not comfortable troubleshooting the issue yourself, it's best to consult a qualified mechanic with experience in automatic transmissions. They can perform a more comprehensive diagnosis and recommend the necessary repairs.

Additional tips:

• Avoid driving the vehicle excessively in its current condition, as it could further damage the transmission.
• When explaining the problem to the mechanic, mention the specific details you provided here, such as the consistent speed at which the issue occurs and the lack of shifting abnormalities.
• Get quotes from multiple mechanics before authorizing any repairs.

Remember, this is just general advice based on the limited information available. A proper diagnosis by a qualified mechanic is crucial to pinpoint the exact cause of the problem and recommend the appropriate solution.