2005 Chevy Silverado shifting problem

Tiny
BLOOMEE
  • MEMBER
  • 2005 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 65,000 MILES
My pickup was running and performing fine.
I had my truck serviced in preparation for a long trip. The dealer suggested that the transmission fluid be changed and the transmission be flushed. I agreed.

Immediately after serviceing the transmission a problem developed. Between 40 and about 60 mph it feels as if it is trying to shift dow and then up, you can feel a "bump". If I carefully hold a constant speed, usually around 53 mph and 1500 rpm, the Transmission repeatedly shifts back and forth at probably 20 hertz causiing a tremendous vibration.

They changed the torque converter and the problem remains.
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Wednesday, October 15th, 2008 AT 4:38 AM

1 Reply

Tiny
JNOVACK
  • EXPERT
Inspect Transmission Kickdown Solenoid Faulty transmission kickdown solenoid or solenoid circuit.

Inspect Transmission Modulator - (A/T) Worn leaking or faulty transmission modulator valve or vacuum system.

Inspect Transmission Shift Linkage (Auto) Broken or improperly adjusted shift linkage.

Inspect Transmission Shift Linkage (Manual) Broken or improperly adjusted shift linkage.

Inspect Transmission Temperature Sensor Damaged, worn, or faulty transmission temperature sensor or transmission temperature sensor circuit.

Inspect Transmission Filter (A/T) Clogged or dirty transmission filter.

Inspect Transmission Cable Detent (A/T) Damaged, worn, or incorrectly adjusted transmission detent cable.

Inspect Transmission Cable Shift (A/T) Worn, or incorrectly adjusted transmission shift cable.

Inspect Transmission Cable Shift (M/T) Worn, or incorrectly adjusted transmission shift cable.

Inspect Transmission Control Module Damaged or faulty transmission control module or circuit.

Inspect Transmission Control Solenoid Damaged or faulty transmission control solenoid or circuit.
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Wednesday, October 15th, 2008 AT 7:22 AM

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