P0717 on Chevrolet: How to Diagnose & Fix
Input/Turbine Speed Sensor Circuit No Signal
1 Chevrolet model · 1 documented issue · 1 critical · $1,800-$4,000 repair
P0717 on Chevrolet by model: symptoms, diagnosis and fix
Equinox models with the GM 6T70/6T75 six-speed automatic suffer shudder, harsh or delayed shifts, slipping, and loss of reverse. A common root cause is failure of the 3-5-reverse wave plate, which can crack and cause extreme shudder when reverse is engaged and eventual loss of drive. Overheated/degraded fluid that loses viscosity accelerates internal wear. Failures typically appear between roughly 60,000 and 150,000 miles. Owners report bucking when engaging gear, failure to shift out of 2nd, and inability to engage reverse.
Common Symptoms
- Shudder, especially engaging reverse
- Hard or delayed upshifts
- Slipping or failure to move from a stop
- Stuck in gear / won't shift out of 2nd
- No reverse engagement
How to Fix
Service the fluid on a strict interval (and after any overheating). For wave-plate failure, the transmission must be removed and rebuilt with the updated/stronger wave plate; a fluid-and-filter service alone will not fix a cracked wave plate. Verify a current 6T70 software/calibration update is installed to address shudder/shift quality.
Sources for this issue (1)
P0717 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0717 mean on a Chevrolet?
P0717 stands for "Input/Turbine Speed Sensor Circuit No Signal." This transmission code means the computer is receiving no signal from the input/turbine speed sensor, which measures how fast the transmission's input shaft (turbine side of the torque converter) is spinning. The computer compares this against engine and output speeds to control shifts and torque converter lockup. With no signal, it can't manage shifting properly, so you may get harsh or erratic shifts, no torque converter lockup, or limp mode. It is a no-signal electrical fault pointing to the sensor or its circuit. On Chevrolet it is documented across 1 model: Equinox.
What are the most common causes of P0717?
The most common causes of P0717 are: Failed input/turbine speed sensor, Open or shorted wiring to the sensor, Corroded or loose sensor connector, Damaged reluctor/tone ring on the input shaft, Metal debris on the sensor tip from internal wear, Poor ground or reference voltage to the sensor, Faulty transmission control module (less common). The specific cause varies by vehicle.
How much does it cost to fix P0717 on a Chevrolet?
Published repair estimates on Chevrolet range from $1,800 to $4,000 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.