2014-2020 GMC Canyon Transmission Range Sensor Problems and Replacement
If your Canyon has trouble starting or shifting gears, the transmission range sensor might be the reason.
- A bad transmission range sensor on a 2014-2020 Canyon typically triggers a P0705 code and can prevent the truck from starting.
- Do not confuse a TRS failure with the more common transmission shudder issue, which is often fixed with a fluid change or software update per a TSB.
- For 2020 models, check with a dealer about service update N192282860, a software fix for an internal range sensor fault, before replacing parts.
- The Dorman aftermarket sensor is a cost-effective, direct-fit replacement for the original part.
What is a Transmission Range Sensor?
Think of the transmission range sensor (TRS) as a translator between your gear shifter and the truck's computer. Every time you move the shifter, this sensor sends an electronic signal to the Transmission Control Module (TCM). The TCM uses that signal to do several things: it confirms the truck is in Park or Neutral before allowing the engine to crank, it turns on your backup lights when you select Reverse, and it tells the transmission when to shift as you drive. When this sensor fails, the computer gets confusing information, leading to problems.
Symptoms of a Bad Transmission Range Sensor
A failing range sensor on a 2014-2020 GMC Canyon will usually make itself known through several clear symptoms:
- Check Engine Light: This is often the first sign. A scan will typically show the code P0705, which points directly to a malfunction in the sensor's circuit. 🎬 See why you shouldn't replace parts before watching this diagnostic.
- No-Start Condition: You might turn the key and get nothing, even though the battery is fine. This happens because the sensor isn't telling the computer that the truck is in Park or Neutral, so the starter is disabled for safety.
- Erratic Shifting: The transmission may shift harshly, delay shifting, or get stuck in one gear (known as "limp mode"). This is because the computer is unsure of the correct gear and is trying to protect the transmission from damage.
- Incorrect Gear Display: The gear indicator on your dashboard (PRNDL) may not match the gear you've actually selected, or it might be blank.
- Reverse Lights Don't Work: If the sensor can't detect that you've shifted into Reverse, it won't activate the backup lights.
Don't Confuse with Other Transmission Issues
Many 2014-2020 Canyon owners report transmission shuddering or harsh shifts, especially with the 8-speed transmission. These issues are often unrelated to the range sensor and may be addressed by GM through Technical Service Bulletins (TSBs) that involve a special transmission fluid flush or a software update. Before replacing the TRS for a shifting problem, ask a dealer to check for TSBs related to your truck's specific symptoms.
Choosing a New Aftermarket Sensor: Dorman
For the 2014-2020 GMC Canyon, the primary aftermarket option for a new transmission range sensor is Dorman. Dorman specializes in creating parts that are designed to be direct replacements for the original factory equipment.
- Quality: Dorman parts are engineered to match the fit and function of the original. They are a well-known, reliable choice for common replacement parts and are backed by a long history in the automotive industry.
- Cost: The main advantage of choosing an aftermarket part like Dorman is the cost savings. It provides the same function as the original part for a lower price.
While OEM parts are always a safe choice, a quality aftermarket sensor from a brand like Dorman is a practical and budget-friendly solution for this specific repair.
Known Issues, TSBs, and Recalls
As of early 2026, there are no specific recalls from the NHTSA for a widespread failure of the transmission range sensor on the 2014-2020 GMC Canyon.
However, GM did issue a service update (N192282860) for certain 2020 models. This update addresses a software issue where a fault in the internal range sensor could cause the transmission to unexpectedly shift into a neutral state. The fix is a simple software reprogram performed by a dealer.
Cost to Replace a 2014-2020 GMC Canyon Transmission Range Sensor
The total cost will depend on who does the work—you or a professional mechanic. The sensor itself is relatively inexpensive.
| Part or Service | Estimated Cost |
|---|---|
| New OEM (ACDelco) Sensor | $90 - $150 |
| New Aftermarket (Dorman) Sensor | $60 - $65 |
| Shop Labor | $100 - $225 |
| Total Professional Repair (Aftermarket) | $160 - $290 |
Frequently Asked Questions
What does the P0705 code mean?
The P0705 code specifically means there is a "Transmission Range Sensor Circuit Malfunction." This tells you the truck's computer is receiving an impossible or missing signal from the sensor, such as the sensor indicating the truck is in both Park and Drive at the same time, or providing no signal at all.
🎬 Watch: A deep dive into P0705 causes and circuit fixes.Is a transmission range sensor the same as a neutral safety switch?
Yes, they are often the same part. The term "neutral safety switch" refers to the part's function of preventing the engine from starting in gear. "Transmission range sensor" is a more modern term that covers all its functions, including telling the computer the selected gear for shift control and other operations.
Can I replace the transmission range sensor myself?
Yes, this is a DIY-feasible job for someone with moderate mechanical skills and basic tools. The sensor is typically located on the outside of the transmission, accessible from underneath the truck. The process involves disconnecting the battery, unplugging the electrical connector, removing a few bolts, and swapping the part. Proper alignment of the new sensor is important.
🎬 Watch: How to test and replace your neutral safety switch.Will clearing the P0705 code fix the problem?
No. Clearing the code will only turn the check engine light off temporarily. Since the problem is with a physical part or its wiring, the computer will detect the fault again and the code will return, usually within a short period of driving. The sensor must be repaired or replaced to fix the issue permanently.
Helpful Videos
Technical Specifications
OEM Part Numbers: 24275801 24259423
Body Material: Plastic, Color/Finish: White, Connector Type: Varies by transmission (6L50 or 8L45), verify visually.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- GMC Canyon:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- What is a Transmission Range Sensor?
- Symptoms of a Bad Transmission Range Sensor
- Don't Confuse with Other Transmission Issues
- Choosing a New Aftermarket Sensor: Dorman
- Known Issues, TSBs, and Recalls
- Cost to Replace a 2014-2020 GMC Canyon Transmission Range Sensor
- Frequently Asked Questions
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