Chevrolet Uplander Manifold Absolute Pressure (MAP) Sensor Guide for 2005-2009 Models
Address poor engine performance in your Uplander by understanding the signs of a failing MAP sensor and how to choose the best aftermarket replacement.
- A bad MAP sensor in your Uplander will typically cause a Check Engine Light with codes like P0106, P0107, or P0108.
- Symptoms include rough idle, poor gas mileage, hesitation, and sometimes black smoke from the exhaust.
- Replacement is very easy for a DIYer, taking less than 30 minutes with basic tools. The sensor is on top of the engine.
- Driving with a failed MAP sensor can lead to long-term engine or catalytic converter damage, so it should be replaced promptly.
Is Your Uplander Running Rough? It Could Be the MAP Sensor
A failing Manifold Absolute Pressure (MAP) sensor can cause a surprising number of problems in your Chevrolet Uplander. Because this sensor's data is critical for the air-fuel mixture, a bad signal can throw off engine performance. Symptoms often start small but can lead to poor fuel economy, rough running, and even stalling. 🎬 Learn how to diagnose the most common faulty MAP sensor symptoms. Fortunately, this is a part that is relatively inexpensive and easy for a DIYer to replace.
Choosing the Right Aftermarket MAP Sensor for Your Uplander
When replacing the MAP sensor, you have several quality tiers to choose from. For a critical electronic sensor, sticking with reputable brands is recommended to ensure reliability and proper engine function.
- Premium Aftermarket (OEM-Quality): Brands like Bosch and Delphi are often original equipment manufacturers for GM. Choosing one of these brands gives you confidence in fit, function, and longevity that is equivalent to the part your Uplander was built with. NGK (under their NTK sensor line) is also a top-tier choice known for excellent quality.
- Quality Aftermarket: Brands such as Standard Ignition (SMP) and Walker Products are well-regarded in the aftermarket. They provide a reliable and durable alternative to premium brands at a slightly lower cost, making them a great value.
- Economy Brands: Brands like Facet, Global Parts, MTC, and True Tech offer budget-friendly options. While they are the most affordable, they may not offer the same long-term durability or precise calibration as higher-tiered brands. These are suitable for immediate repairs on a tight budget, but be aware that their lifespan might be shorter.
Estimated Replacement Costs
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket | $39.20 - $89.28 |
| New OEM (ACDelco) | $45.00 - $90.00 |
| Shop Labor | $70 - $140 |
Frequently Asked Questions (FAQ)
Where is the MAP sensor on a 2005-2009 Chevrolet Uplander?
The MAP sensor is located on top of the intake manifold, toward the back of the engine. 🎬 Watch this step-by-step replacement guide for the 3.5L engine. It is a small, black plastic sensor held in by one or two bolts and has an electrical connector attached.
🎬 See how to locate and swap the sensor on 3.9L models.Can I clean a MAP sensor instead of replacing it?
While some sensors can be cleaned, it is generally not recommended for the Uplander's MAP sensor, especially if it has failed electronically. Contaminants can sometimes be cleaned off with a dedicated sensor cleaner, but if the internal electronics are faulty, cleaning will not solve the problem and replacement is necessary. GM service information specifically warns against using chemical cleaners or compressed air on some MAP sensors due to their sensitivity.
What happens if I don't replace a bad MAP sensor?
Ignoring a failed MAP sensor can lead to persistent poor engine performance, significantly reduced fuel economy, and increased emissions. In the long term, running with an incorrect air-fuel ratio (either too rich or too lean) can cause damage to other expensive components, such as the spark plugs and catalytic converter.
Do I need to reset the computer after replacing the MAP sensor?
Yes, it is best practice to clear the diagnostic trouble codes (DTCs) from the engine computer using an OBD2 scanner after the replacement. While the Check Engine Light may turn off on its own after several successful drive cycles, clearing the code immediately confirms the repair was successful.
Are there any recalls for the Uplander MAP sensor?
A search of the NHTSA database shows no specific safety recalls for the MAP sensor on the 2005-2009 Chevrolet Uplander. However, a Technical Service Bulletin (TSB) for other GM vehicles mentions that ice can form on the MAP sensor in freezing temperatures, potentially causing a P0106 code and reduced power. While not specific to the Uplander, it is a known issue on similar GM engines.
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Technical Specifications
OEM Part Numbers: 12592525 55573248 19418807 12591290 12614970
3-wire sensor operating on a 5-volt reference signal. The sensor's output voltage changes in response to manifold pressure, which the ECU uses to calculate engine load.
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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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