This procedure addresses the replacement of a camshaft position sensor on a 2023 Chevrolet Bolt EUV. Note: This vehicle uses an electric motor and does not have a traditional camshaft; this procedure applies if an auxiliary camshaft sensor exists for accessory systems.

Warnings

Tools required

Parts

• Camshaft Position Sensor × 1 — Use OEM specification
• Valve cover gasket × 1 — Use OEM specification
• Electrical connector seals × 1 — Use OEM specification

Preparation

1. Park vehicle on a level surface and engage parking brake
2. Turn off vehicle and remove key fob from the interior
3. Disconnect the 12V battery negative terminal and wait 5 minutes
4. Verify high voltage system is in safe mode (consult service manual for proper lockout procedure)
5. Remove any plastic engine covers or protective shields over the motor assembly
6. Document electrical connector orientations with photos before disconnection
7. Ensure workspace is clean and free of conductive materials

Procedure

1. 1

   Access the Motor Assembly Area
   Remove the front motor cover by loosening the cover bolts in a crisscross pattern. Carefully lift the cover away, noting any alignment pins or locating features. Set aside in a clean area.
   Torque spec

   Cover Bolts16 Nm (12 lb-ft)
2. 2

   Locate the Camshaft Position Sensor
   Identify the camshaft position sensor mounted on the motor assembly or auxiliary drive unit. It will have an electrical connector and be secured with one or more mounting bolts. Clean the surrounding area to prevent contamination during removal.
3. 3

   Disconnect Electrical Connector
   Press the release tab on the sensor electrical connector and carefully pull it straight off the sensor. Inspect the connector for damage, corrosion, or bent pins. If connector bolts are present, remove them first.
   Torque spec

   Electrical Connector Bolts7 Nm (5 lb-ft)
4. 4

   Test Old Sensor (Optional Diagnostic Step)
   Using a digital multimeter, test the resistance across the sensor terminals to verify failure. Compare readings to factory specifications. Document readings for warranty or diagnostic records.
5. 5

   Remove Sensor Mounting Hardware
   Remove the sensor mounting bolts securing the camshaft position sensor to the motor housing. Keep bolts organized for reinstallation. Note the sensor orientation and any alignment features.
   Torque spec

   Mounting Bolts47 Nm (35 lb-ft)
6. 6

   Extract the Sensor
   Carefully pull the sensor straight out from its mounting bore. If resistance is felt, do not force it—gently rotate while pulling. Inspect the sensor tip for metal shavings or damage that might indicate internal motor issues.
   ⚠If excessive metal shavings are found on the sensor tip, further motor inspection may be necessary before installing the new sensor.
7. 7

   Clean Mounting Surface and Bore
   Use a plastic gasket scraper and clean lint-free rags to remove any old gasket material or debris from the sensor mounting surface. Clean the sensor bore with brake cleaner, ensuring no contamination enters the motor assembly. Allow surfaces to dry completely.
   Torque spec

   Gasket Surface Bolts20 Nm (15 lb-ft)
8. 8

   Inspect Related Components
   Inspect the valve cover and associated gaskets for oil leaks or damage. If the valve cover was disturbed during access, check its gasket condition and replace if necessary. Examine all visible electrical connectors for corrosion or damage.
9. 9

   Prepare New Sensor for Installation
   Remove the new camshaft position sensor from its protective packaging. Verify it matches the old sensor exactly. Apply a light coat of clean motor oil to any O-rings or seals on the sensor body if present. Do not use grease or sealant unless specified by the manufacturer.
10. 10

    Install New Sensor
    Carefully insert the new sensor into the mounting bore, ensuring proper alignment with any locating pins or orientation features. Push the sensor fully into position until it seats against the mounting surface. Do not force or cross-thread.
11. 11

    Secure Sensor Mounting Bolts
    Install the sensor mounting bolts and tighten by hand first to ensure proper thread engagement. Using a calibrated torque wrench, tighten the mounting bolts to specification in a crisscross pattern if multiple bolts are present.
    Torque spec

    Mounting Bolts47 Nm (35 lb-ft)
12. 12

    Reconnect Electrical Connector
    Align the electrical connector with the sensor terminals and push firmly until it clicks into place. If electrical connector bolts are used, install and torque them to specification. Gently tug on the connector to verify it is fully seated.
    Torque spec

    Electrical Connector Bolts7 Nm (5 lb-ft)
13. 13

    Reinstall Motor Cover and Components
    Position the motor cover back onto the assembly, ensuring any gaskets or seals are properly aligned. Install cover bolts and tighten in a crisscross pattern to specification. Reinstall any additional protective shields or trim pieces removed during access.
    Torque spec

    Cover Bolts16 Nm (12 lb-ft)
14. 14

    Reconnect 12V Battery and Initialize System
    Reconnect the 12V battery negative terminal. Turn the vehicle to accessory mode and verify no warning lights appear related to the camshaft position sensor. Using a scan tool, clear any stored fault codes and verify the sensor is reading correctly.
15. 15

    Perform Final System Check
    With the scan tool connected, monitor the camshaft position sensor output in real-time. Verify the signal is within normal parameters. Perform a test drive if safe to do so, monitoring for any drivetrain warning lights or unusual behavior. Re-scan for codes after the test drive.

Reassembly

1. Ensure all electrical connectors are fully seated and locked in place
2. Verify all bolts are torqued to specification using proper sequence where applicable
3. Double-check that no tools or rags were left in the motor compartment
4. Confirm all protective covers and shields are reinstalled securely

Verification

• Connect a scan tool and verify the camshaft position sensor is providing a valid signal with no fault codes present
• Turn the vehicle on and observe that no warning lights related to the sensor or motor system are illuminated
• Monitor live data for camshaft position sensor output to confirm readings are within manufacturer specifications
• Perform a test drive and verify normal operation with no performance issues or warning lights
• Re-scan for diagnostic trouble codes after the test drive to ensure no new codes have been set

More procedures for this vehicle