AutoCodes – Chevrolet – P0736 2017 Chevrolet Silverado

P0736 2017 Chevrolet Silverado Code - Transmission Reverse Ratio Incorrect

Quick Answer

The transmission turbine speed sensor and vehicle speed sensor are hall-effect sensors. Common causes include Low transmission fluid level, Shift solenoid mechanical fault, Faulty Turbine Sensor. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0736 2017 Chevrolet Silverado indicates Transmission Reverse Ratio Incorrect.
Common causes: Common causes include Low transmission fluid level, Shift solenoid mechanical fault, Faulty Turbine Sensor.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 306

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 29, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0736 2017 Chevrolet Silverado Description

The transmission turbine speed sensor and vehicle speed sensor are hall-effect sensors. The turbine speed sensor is mounted to the transmission housing and faces the reluctor attached to the 1-2-3-4-5-6 clutch piston housing. The vehicle speed sensor is mounted to the low and reverse clutch housing on 2WD, or transfer case rear case half on 4WD. The vehicle speed sensor faces a reluctor wheel attached to the transmission output shaft on 2WD, or a reluctor wheel attached to the transfer case rear output shaft on 4WD.
The TCM provides a 9 V reference circuit and a signal circuit to each of the sensors. As the 1-2-3-4-5-6 clutch piston housing and transmission output shaft or transfer case output rotates, the sensors produce a signal frequency based on the teeth on the reluctor wheel. The TCM calculates the transmission gear ratio based on the speed sensor signals and compares the calculated gear ratio to the commanded gear ratio.
The Diagnostic Trouble Code (DTC) will be set when the TCM detects the calculated reverse gear ratio differs from the known reverse gear ratio for 2 s.

OBDII Code P0736 2017 Chevrolet Silverado - Transmission Reverse Ratio Incorrect - AutoCodes.com — P0736 2017 Chevrolet Silverado Code - Transmission Reverse Ratio Incorrect

What does this mean?

What are the Possible Causes of the DTC P0736 2017 Chevrolet Silverado?

Low transmission fluid level
Shift solenoid mechanical fault
Faulty Turbine Sensor
Faulty Output Speed Sensor

How to Fix the DTC P0736 2017 Chevrolet Silverado?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

Incorrect ratio Diagnostic Trouble Code (DTC) may indicate a component condition with piston seals, clutch plates, or solenoids or it may be caused by a faulty turbine or output speed sensor signal.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0736 2017 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0736 2017 Chevrolet Silverado code?

Need more information on how to fix the P0736 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0736 2017 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0736 2017 Chevrolet Silverado Code

1. What does the OBDII code P0736 mean for a 2017 Chevrolet Silverado?

P0736 indicates that the transmission's reverse gear ratio is incorrect, often due to a mechanical issue, sensor problem, or internal transmission fault.

2. What are the common symptoms of code P0736 in a 2017 Silverado?

Symptoms include difficulty engaging reverse gear, slipping in reverse, abnormal shifting behavior, and the check engine light being illuminated.

3. What causes the P0736 code to appear in a Chevrolet Silverado?

Common causes include low transmission fluid, damaged or worn reverse clutch components, a faulty transmission control module (TCM), or a malfunctioning speed sensor.

4. Can I still drive my Silverado with a P0736 code?

Driving may be possible, but using reverse gear could be problematic or cause further damage. It's recommended to address the issue promptly.

5. How can low transmission fluid cause the P0736 code?

Low fluid levels can result in insufficient hydraulic pressure, preventing the reverse gear from engaging properly and triggering the incorrect ratio code.

6. How is the P0736 code diagnosed on a 2017 Silverado?

Diagnosis involves scanning the vehicle with an OBDII tool, inspecting transmission fluid levels, checking for mechanical wear in reverse components, and testing the speed sensors.

7. What repairs are commonly needed to fix code P0736?

Repairs may include refilling or flushing the transmission fluid, replacing a faulty speed sensor, repairing or rebuilding the transmission, or reprogramming the TCM.

8. Can a faulty speed sensor cause code P0736?

Yes, a malfunctioning speed sensor can provide incorrect input to the TCM, leading to an inaccurate reverse gear ratio reading.

9. How much does it cost to fix the P0736 code on a Silverado?

Repair costs can vary widely, ranging from $150 for a sensor replacement to $2,000 or more for a transmission rebuild, depending on the underlying issue.

10. What should I do if my Silverado shows a P0736 code?

Start by checking the transmission fluid level and condition, then have the vehicle inspected by a qualified mechanic to identify and address the root cause.