A failing chevy silverado crankshaft position sensor can instantly turn your dependable truck into an unpredictable paperweight, causing sudden engine stalling and extended crank times. Nothing feels worse than being stranded on a dark highway while facing an exorbitant dealership repair bill for a standard mechanical fix. Here at Vroomdan, our lead mechanics have diagnosed thousands of General Motors V8 engine issues to help practical truck owners fix their vehicles at home. Below, you will find the exact location of the sensor, step-by-step replacement steps, and the critical computer relearn procedure, along with an incredible look into factory hidden features built right into your truck cab.
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In This Guide
- Exact physical location of the crankshaft sensor on 4.8L, 5.3L, 6.0L, and 6.2L engines.
- Step-by-step DIY removal and installation guide using simple hand tools.
- How to diagnose diagnostic trouble codes P0335 and P0336.
- Mastering the mandatory Crankshaft Position (CKP) variation relearn procedure.
- Preventative maintenance hacks to stop future thermal sensor failure.
Chevy Silverado Crankshaft Position Sensor Location Fix
Locating the engine sensor is the first big hurdle for practical truck owners.
On GM V8 engines, the sensor sits behind the starter motor on the lower passenger side of the engine block.
Extreme engine heat makes this sensor vulnerable over time.
Replacing a faulty chevy silverado crank sensor yourself saves hundreds in labor charges.
Before beginning work, collect your tools and prepare your work area.
Required Tools and Repair Specifications
| Tool / Part Required | Recommended Spec | Purpose |
|---|---|---|
| Socket Wrench Set | 10mm, 13mm, 15mm sockets | Starter bolts and sensor bracket removal |
| Ratchet Extensions | 6-inch and 10-inch wobble extensions | Accessing tight spaces behind exhaust manifold |
| OEM Sensor Part | ACDelco Original Equipment | Ensures correct signal frequency to PCM |
| Dielectric Grease | Automotive grade electrical grease | Sealing weather-pack electrical connectors |
| OBD2 Scan Tool | Scanner with bi-directional CKP relearn | Synchronizing new sensor to engine computer |
The total completion time for this DIY fix ranges from 45 to 75 minutes.
Always allow your truck engine to cool completely before starting.
Hot exhaust pipes will cause severe burns during sensor removal.
Step 1: Vehicle Safety and Battery Disconnection
Park your Silverado on a flat concrete surface and engage the parking brake firmly.
Disconnect the negative battery cable using a 10mm wrench to prevent electrical shorts.
Raise the front passenger side of the truck safely using rated jack stands.
Never work under a vehicle supported solely by a hydraulic floor jack.
Step 2: Starter Motor Removal for Sensor Clearance
Locate the passenger side starter motor mounted near the oil pan.
Unbolt the protective heat shield using your 10mm socket.
Disconnect the main starter wiring harness and solenoid connections carefully.
Remove the two primary mounting bolts securing the starter to the engine block.
Carefully lower the starter motor out of the engine bay to reveal the chevy silverado starter location area.
Step 3: Removing the Old Crank Sensor
Identify the small cylindrical sensor inserted into the side of the engine block.
Depress the red locking tab on the wire harness connector before pulling it free.
Remove the single 10mm mounting bolt securing the sensor retainment tab.
Twist the old sensor gently while pulling outward to break the hardened rubber O-ring seal.
Clean the surrounding mounting surface thoroughly to prevent dirt from entering the crankcase.
Step 4: Installing the New OEM Sensor
Apply a thin film of clean engine oil onto the new sensor’s rubber O-ring.
Push the new component firmly into the block until it seats flush against the metal face.
Tighten the 10mm retaining bolt to 89 inch-pounds (approx. 7.5 ft-lbs) of torque.
Do not overtighten this bolt because the plastic sensor mounting ear can snap.
Apply dielectric grease to the electrical connector pins and snap the wire harness tight.
Step 5: Reassembling the Starter Motor and Battery
Position the starter back into place against the engine block mounting pad.
Torque the main starter bolts to 37 ft-lbs according to factory specs.
Reattach the starter heat shield securely to block exhaust manifold heat radiate.
Reconnect your negative battery terminal and lower the truck to the ground.
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Decoding P0335 and P0336 Engine Diagnostic Trouble Codes
The Powertrain Control Module monitors engine rotation via electromagnetic pulses.
When signal pulses drop out, the check engine light illuminates immediately.
Understanding these Diagnostic Trouble Codes (DTC) helps pinpoint mechanical vs electrical failures.
Code P0335 indicates a complete circuit malfunction in the position sensor system.
Code P0336 points to a performance issue where signal pulses read out of range.
Internal copper wire degradation often causes intermittent signal loss during hot operations.
When engine temperatures rise, thermal expansion breaks delicate connections inside an old sensor.
This thermal failure leads to terrifying sudden engine stalling while driving at cruising speeds.
Once the engine block cools down, the sensor reconnects and starts normally again.
Testing your chevy silverado camshaft position sensor alongside the crank sensor ensures complete timing synchronization.
Both sensors work together to send precise digital data to the truck’s engine management system.
If wire harness loom plastic has melted against the exhaust, replace the damaged wiring harness clips.
According to General Motors technical bulletins, proper circuit resistance should read within factory tolerances.
Using a multimeter helps confirm if wiring to the chevy silverado pcm has broken power delivery.
The Critical Crankshaft Position Sensor Relearn Procedure
Installing a new sensor physically is only half of the repair job.
The engine computer must learn small manufacturing variations of the new physical part.
Skipping the CKP variation relearn leads to false engine misfire codes later.
You may notice frustrating extended cranking if the computer profiles do not align.
To execute the procedure, connect a bi-directional OBD2 scan tool to your truck port.
Bring the engine coolant temperature up to normal operating specs (at least 170°F).
Select the “CKP Relearn” function within the scan tool diagnostic menu.
Hold the brake pedal down firmly while keeping your foot off the accelerator initially.
When prompted by the tool, press the throttle pedal to the floor smoothly.
The computer will take control of fuel delivery and rev the engine briefly to cut-off RPM.
Release the throttle immediately once the fuel cut-off occurs around 4,000 RPM.
Turn the ignition key off for 30 seconds to lock the calibration into permanent memory.
Completing this procedure brings an enormous sense of relief knowing your truck runs perfectly.
A successful relearn ensures your ignition timing matches crankshaft rotation across all driving conditions.
Many owners ask if installing a crankshaft position sensor chevy silverado part requires expensive shop tools.
While basic code readers cannot trigger relearns, intermediate DIY scan tools handle the task easily.
Practical Application Guide and Preventative Maintenance
Preventing premature sensor failure comes down to managing heat exposure and clean power.
Always inspect the factory metal heat shield during routine oil changes.
If your heat shield rusted away, replace it immediately to shield delicate electronics.
Avoid driving through high water crossings that suddenly shock scorching hot sensor housings.
Thermal shock cracks ceramic internal components and destroys silicone weather seals.
Whenever you service your starter motor, inspect the sensor wire routing carefully.
Ensure the wiring harness zip ties keep cables away from rotating front driveshafts.
Maintaining clean battery terminals prevents voltage spikes from damaging sensitive engine sensors.
Buying OEM components ensures long-term reliability over cheap aftermarket alternatives.
Proper maintenance protects your overall vehicle payload and keeps towing performance dependable.
Overcoming Common DIY Mistakes
Many DIY mechanics make avoidable errors when replacing their engine sensors.
The most common mistake is prying on plastic sensor bodies with screwdrivers.
Prying breaks the plastic housing, dropping metal fragments down into the oil pan opening.
Another frequent mistake is forgetting to reinstall the factory starter heat shield.
Without the shield, exhaust manifold heat bakes a new crankshaft sensor chevy silverado within months.
Never pull on electrical wires when disconnecting harness plugs from sensors.
Pulling wires causes hidden internal pin disconnections that trigger ghost diagnostic codes.
Always release safety locking clips fully before tugging on connector bodies.
Finally, never skip the battery disconnect step during starter removal.
Accidentally grounding live starter leads creates sparks that blow main electrical fuses.
Frequently Asked Questions
Where is the crankshaft position sensor located on a 5.3L Chevy Silverado?
The sensor is located on the lower passenger side of the engine block.
It sits directly behind the starter motor, hidden beneath a small metallic heat shield.
You must unbolt and lower the starter motor to access the sensor mounting bolt.
Can I drive my Chevy Silverado with a bad crankshaft sensor?
Driving with a failing sensor is extremely dangerous and not recommended.
The engine can stall abruptly in traffic without any prior warning.
Sudden stalling causes immediate loss of power steering assist and power brake boosters.
Is a computer relearn mandatory after replacing the sensor?
Yes, performing a CKP variation relearn is highly recommended by General Motors.
Without a relearn, the computer may trigger false cylinder misfire codes under load.
What are the symptom signs of a failing crank sensor?
Common symptoms include extended cranking times, engine stalling when warm, and random misfires.
“I’ve driven a Silverado for 5 years and didn’t know this existed.”
— The most common reaction when this article is shared
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bryansgarage.com · July 28, 2026
Conclusion
Fixing your crankshaft position sensor restores engine performance and prevents dangerous unexpected stalling on the road.
By following proper starter removal and computer relearn steps, you save money while building real mechanical independence.
Ready to get the most out of your truck?
Check out more guides on Vroomdan or email us at contact@vroomdan.com — our team is here to help you discover more truck secrets and maintenance guides.
Disclaimer: Always consult your official Chevy Owner’s Manual before performing any DIY modifications. Information provided is for educational purposes and depends on specific vehicle model years, trim levels, and individual modifications.