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1978 GMC C2500 Pickup

Universal gear includes car amplifiers, subs, and other products that do not install in a specific location or require fitment to integrate with a vehicle.

Universal-Fit Audio for 1978 GMC C2500 Pickup

When thinking of universal gear, we consider products like a car amp that gives more power to your speakers or subs, cell phone chargers, equalizers and sound processors, rear-seat entertainment and video monitors, as well as dash cameras.

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Precision Power HD14.FTD

Tweeter Diaphragm Replacement for HD14.FHT Tweeters (1 Piece)

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Tweeter Diaphragm Replacement for HD14.FHT Tweeters (1 Piece)

• Replacement tweeter diaphragm for premium gauge tweeters
• Specifically designed for HD14.FTD tweeters
• Direct replacement, easy installation
• Includes one (1) replacement tweeter diaphragm

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List price $24.99
-20% $19.99

In stock

• Replacement tweeter diaphragm for premium gauge tweeters
• Specifically designed for HD14.FTD tweeters
• Direct replacement, easy installation
• Includes one (1) replacement tweeter diaphragm

Precision Power i350.2

350W RMS Class D iON Series 2 Channel Car Amplifier

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350W RMS Class D iON Series 2 Channel Car Amplifier

• 115 watts x 2 channel @ 4 ohm
• 175 watts x 2 channel @ 2 ohm
• Bridged: 350 watts x 1 channel @ 4 ohm
• Total RMS Power: 350 watts
• Class D 2 ohm Stable 2-Channel Amplifier

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List price $189.99
-35% $123.99

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Precision Power i1000.1

1000W RMS Class D iON Series Monoblock Car Amplifier

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1000W RMS Class D iON Series Monoblock Car Amplifier

• 350 watts x 1 channel @ 4 ohm
• 600 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable Monoblock Amplifier

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Universal Icon Universal – fits most vehicles.

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List price $274.99
-24% $209.99

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Available Offers (2) for Precision Power i1000.1
FREE Belva Amp Kit at Checkout!
Save 30% off an NVX XKIT82 Amp Kit at Checkout! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT82 Amp Kit! No code needed — discount applies automatically at checkout.

Precision Power AW-12D2

1200W Peak (600W RMS) 12" ATOM Series Dual 2-Ohm Car Subwoofer

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1200W Peak (600W RMS) 12" ATOM Series Dual 2-Ohm Car Subwoofer

• Peak Power: 1200 watts
• RMS Power: 600 watts
• Impedance: Dual 2 ohm
• Non-Transfer Spruce Pulp cone
• surround
• Mount depth: 6.25"
• Sensitivity: 84 dB

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List price $169.99
-24% $129.99

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Precision Power HD13.FTD

Replacement Tweeter Diaphragm for Precision Power HD13.FHT

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Replacement Tweeter Diaphragm for Precision Power HD13.FHT

• Replacement tweeter diaphragm for Precision Power HD13.FHT
• Compatible with select 1998-2013 FLT/Touring (NU) vehicles from Harley Davidson
Precision Power HD13.FHT sold separately

shipping truck icon Free shipping in USA. Provide zip for delivery date.
List price $24.99
-20% $19.99

In stock

• Replacement tweeter diaphragm for Precision Power HD13.FHT
• Compatible with select 1998-2013 FLT/Touring (NU) vehicles from Harley Davidson
Precision Power HD13.FHT sold separately

Limited time!

Precision Power A400.4D

400W RMS Class D ATOM Series 4 Channel Car Amplifier

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400W RMS Class D ATOM Series 4 Channel Car Amplifier

• 60 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Save 30% off an NVX XKIT84 Amp Kit at Checkout!
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$149.99

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Only 1 Left!


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Precision Power AW-10D2

1000W Peak (500W RMS) 10" ATOM Series Dual 2-Ohm Car Subwoofer

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1000W Peak (500W RMS) 10" ATOM Series Dual 2-Ohm Car Subwoofer

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Dual 2 ohm
• Non-Transfer Spruce Pulp cone
• surround
• Mount depth: 5.5"
• Sensitivity: 82.20 dB

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$104.99

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Precision Power AW-10D4

1000W Peak (500W RMS) 10" ATOM Series Dual 4-Ohm Car Subwoofer

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1000W Peak (500W RMS) 10" ATOM Series Dual 4-Ohm Car Subwoofer

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Dual 4 ohm
• Non-Transfer Spruce Pulp cone
• surround
• Mount depth: 6"
• Sensitivity: 82.5 dB

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$104.99

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    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
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    FAQ for Universal-Fit Audio & Electronics in 1978 C2500 Pickup

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 1978 GMC C2500 Pickup?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your C2500 Pickup.

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    • Owner's manual
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    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

    • You see only parts engineered for your exact vehicle
    • You avoid incompatible radios, speakers, or wiring
    • Installation is smoother, faster, and frustration-free
    • You get the correct accessories the first time

    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.