Chevrolet SSR Engine Camshaft Position Sensor Guide (2003-2006)
Everything an SSR owner needs to know about a failing camshaft position sensor and how to choose the right replacement.
- Verify your SSR's year and engine (5.3L or 6.0L) before ordering; the sensors are different and in different locations.
- A failing sensor can cause a no-start condition or stalling while driving, so it should be replaced promptly.
- Choose a quality aftermarket brand like Delphi, ACDelco, or Standard Motor Products for reliability; avoid unbranded, low-cost options.
- Replacement is a simple DIY job for most owners, requiring only a 10mm socket and about 30 minutes.
Is Your SSR's Camshaft Position Sensor Failing?
A bad camshaft position sensor can cause problems that seem major but are often solved with this one small part. The most common sign is a Check Engine Light. If the light is on, getting the codes scanned at an auto parts store is the first step. Codes like P0340, P0341, P0342, or P0343 point directly to a problem in the camshaft position sensor circuit.
Other symptoms you might notice include:
- Difficulty Starting: The engine may crank for a long time before it starts, or it might not start at all.
- Rough Idle and Stalling: Your SSR might idle poorly, shake, or even stall at stoplights.
- Poor Engine Performance: You may experience a noticeable loss of power, hesitation when you accelerate, and worse fuel economy.
- Engine Misfires: The engine may run rough, backfire, or you might feel it jerking during acceleration.
Critical Part Distinction: 2003-2004 vs. 2005-2006
The Chevrolet SSR used two different V8 engines, and they use different camshaft position sensors. This is the most common mistake when ordering this part.
- 2003-2004 SSR (5.3L LM4 V8): Uses the Gen 3 LS-style sensor, located at the top-rear of the engine block, behind the intake manifold. The OEM part number is 12561211 (or its replacement 19420911).
- 2005-2006 SSR (6.0L LS2 V8): Uses the Gen 4 LS-style sensor, located on the front timing cover of the engine. The OEM part number is 12591720.
Always verify your engine year and sensor location before purchasing.
Choosing the Right Aftermarket Sensor
When replacing the camshaft sensor, you have several options. While an OEM part from a dealer is one choice, quality aftermarket brands offer reliable performance at a better price. Many owners and mechanics strongly advise against using the cheapest, unbranded sensors, as they can fail quickly.
Here’s a breakdown of reputable aftermarket brands:
- Top Tier (OEM Supplier Quality): Brands like Delphi and ACDelco are often the original equipment manufacturers for General Motors. Choosing one of these is the closest you can get to the factory part. Hitachi and NGK (NTK) also have a strong reputation for producing reliable sensors.
- Trusted Aftermarket: Standard Motor Products (Standard Ignition) and Walker Products are well-respected names in the aftermarket that produce quality sensors considered a good balance of price and reliability. Dorman is another widely available option that often provides a direct fit.
- Value-Oriented: Brands like Beck Arnley, Holstein, and Spectra offer more budget-friendly options. While they meet OEM specifications, they are generally considered a step below the top-tier brands in terms of long-term durability.
Installation Tip
Replacing the camshaft position sensor is a straightforward job for a DIYer with basic tools. The sensor is held in place by a single 10mm bolt. For the 2003-2004 models, the sensor is at the back of the engine and can be hard to see, but it is reachable without removing the intake manifold. For 2005-2006 models, it's on the front timing cover. Always lubricate the new sensor's O-ring with clean engine oil before installation to ensure a good seal. After replacement, the check engine light should turn off after a few drive cycles, though some vehicles may require a 'relearn' procedure with a scan tool.
| Item | Estimated Cost |
|---|---|
| New Aftermarket Sensor | $27 - $75 |
| New OEM Sensor | $60 - $90 |
| Shop Labor | $50 - $125 |
| Total (DIY) | $27 - $75 |
| Total (Shop Installed) | $87 - $200 |
Frequently Asked Questions
Is the camshaft sensor the same as the crankshaft sensor?
No. They are two different sensors, though they work together. The camshaft sensor tracks the position of the camshaft (top of the engine), while the crankshaft sensor tracks the position of the crankshaft (bottom of the engine). A failure in either can cause similar symptoms like a no-start or stalling.
Can I drive my SSR with a bad camshaft sensor?
It is not recommended. A failing sensor can cause the engine to stall unexpectedly, which is a serious safety risk, especially in traffic. It can also leave you stranded if the engine refuses to start.
Were there any recalls for the SSR camshaft position sensor?
No, there have been no specific recalls issued by the NHTSA for the camshaft position sensor on the 2003-2006 Chevrolet SSR. However, GM has issued technical service bulletins (TSBs) for similar engines related to camshaft position actuator magnets sticking, which can cause a surge or shudder feeling sometimes mistaken for a sensor issue.
Do I need to replace the wiring connector too?
Not usually, but you should inspect it. The plastic connector can become brittle from heat and age. If the locking tab is broken or the wiring looks cracked or oily, it's a good idea to replace the connector pigtail to ensure a solid connection.
Technical Specifications
OEM Part Numbers: 12561211 19420911 12591720
Sensor location and part number are dependent on the engine. 2003-2004 (5.3L V8) uses part #12561211 or #19420911 located at the rear of the engine block. 2005-2006 (6.0L V8) uses part #12591720 located on the front timing cover.
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.
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