GM 6494938 Cruise Control Servo Power Unit

( Brand: Gm ), ( Type: Cruise Control Servo Power Unit ), ( Manufacturer Part Number: 6494938 ), ( Universal Fitment: No ), ( Vintage Part: Yes ), ( California Prop 65 Warning: This Product Can Expose You To Chemicals, Which Are Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm. )

Review GM Buick Cruise Control Servo Power Unit Gm# fits 1973–1982

The GM 6494938 1973-1982 Buick Cruise Control Servo Power Unit is an essential component of the cruise control system in select Buick models from the early 1970s and 1980s. This servo power unit is designed to provide the necessary hydraulic power to engage and disengage the cruise control system.

This servo power unit is a compact, yet robust hydraulic unit. It measures approximately 6 inches long, 3 inches wide, and 3 inches high. The unit is made of durable materials, including cast aluminum and various hydraulic components. Its finish is a satin black, which not only provides an attractive look but also helps protect the unit from corrosion.

The servo power unit houses a diaphragm pump, which is responsible for generating the hydraulic pressure needed to operate the cruise control system. This pump is driven by a mechanical linkage connected to the accelerator pedal. When the driver presses the cruise control switch and sets the desired speed, the servo unit engages, and the pump begins to pump hydraulic fluid to the cruise control actuator.

The servo power unit also includes a vacuum reservoir. This reservoir holds the hydraulic fluid and maintains a constant level to ensure proper operation of the cruise control system. It also includes a vacuum hose that connects the reservoir to the engine intake manifold, which helps maintain the vacuum required for the cruise control system to function.

The unit comes complete with all necessary mounting hardware, including four mounting bolts and a bracket. The servo power unit is designed to be easily installed in the vehicle, making it a popular choice among classic car restorers and enthusiasts.

The GM 6494938 1973-1982 Buick Cruise Control Servo Power Unit is a high-quality, reliable component that delivers consistent performance. It is engineered to meet the demanding requirements of Buick's cruise control system, providing smooth, effortless operation, and ensuring the driver's desired speed is maintained with ease. With its durable construction and easy installation process, this servo power unit is an excellent investment for any classic Buick owner looking to restore or enhance their vehicle's cruise control system.

Buying a GM 6494938 1973-1982 Buick cruise control servo power unit comes with both advantages and disadvantages. Here's a detailed analysis of each:

1. Original Equipment: This part is an original equipment (OE) replacement, ensuring compatibility and reliability with your Buick's cruise control system.

2. Improved Performance: A new servo power unit can lead to improved cruise control performance, including smoother acceleration and more accurate speed maintenance.

3. Longer Lifespan: A new servo power unit is less likely to fail compared to a used or rebuilt part, providing you with peace of mind and a longer lifespan for your cruise control system.

4. Availability: New parts are readily available from authorized dealers and reputable online retailers, making it easy to find and purchase the part you need.

1. Cost: New cruise control servo power units can be more expensive compared to used or rebuilt parts. However, the cost may be justified by the improved reliability and performance.

2. Installation: Installing a new servo power unit requires some mechanical knowledge and tools, which may add to the overall cost and time investment.

3. Shipping: If you're purchasing the part online, you may need to pay for shipping costs, depending on the retailer and your location.

The decision to buy a new GM 6494938 1973-1982 Buick cruise control servo power unit ultimately comes down to your budget, the importance of cruise control to you, and your comfort level with installation. While the upfront cost may be higher compared to used or rebuilt parts, a new servo power unit offers improved reliability, performance, and compatibility with your Buick's cruise control system.

If you value the reliability and performance of a new part and have the budget for it, we recommend purchasing a new GM 6494938 1973-1982 Buick cruise control servo power unit from a trusted retailer. If the cost is a concern, you may consider exploring options for used or rebuilt parts, but be aware that they may not offer the same level of reliability and performance as a new part. Always ensure that you're purchasing from a reputable source to ensure the quality of the part.

Details:

1973-1982 Buick Cruise Control Servo Power Unit GM# 6494938, Other shipping options are available upon request including express.

part #: 6494938 price

• $200.00

specifications cruisecompo:

• for makes: Buick
• for years: 1973-1982
• brand: Gm
• type: Cruise Control Servo Power Unit
• manufacturer part number: 6494938
• universal fitment: No
• vintage part: Yes
• california prop 65 warning: This Product Can Expose You To Chemicals, Which Are Known To The State Of California To Cause Cancer And Birth Defects Or Other Reproductive Harm.

returns cruisecompo:

• paid by: Seller
• policy: Returns Accepted
• time: 30 Days

payments cruisecompo:

• wallet: Paypal
• other
• credit card: Visa

shipping cruisecompo:

• carrier: USPS
• transit: 4-9 Days
• cost: $10.16
• type: Calculated
• class: Expedited
• service: USPS Priority Mail

seller cruisecompo:

• rating: 100.0%
• # reviews: 42
• city: Selah, Washington

general cruisecompo:

• condition: Used
• Car Truck Parts Accessories > Advanced Driver Assistance Systems > Cruise Control Components

offer cruisecompo:

• availability: In Stock
• quantity: 1
• sold: 0
• started: August 26, 2025
• options: Ship-to-home
• best offers: True

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