WiperFinder

1975–1978 GMC C15 Wiper Blade Sizes

Model years 1975 to 1978 Sizes from one source so far

Your wiper sizes

Driver 16in 400 mm
Passenger 16in 400 mm
Bayonet connector

Every GMC C15 from 1975 to 1978 takes these sizes. Any year in this range uses the same wiper blades.

Blades for your GMC C15

Shop the 16" + 16" pair on Amazon
Driver 16" only Passenger 16" only

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Best wiper blades for the 1975–1978 GMC C15

Three blade types, each in your sizes.

Budget

Conventional blades

  • Metal frame, the classic design
  • Lowest cost, fine on flatter glass

In your sizes: 16" + 16"

Check price on Amazon
Our pick

Beam blades

  • One piece with no frame to ice up
  • Hugs curved modern windshields

In your sizes: 16" + 16"

Check price on Amazon
Aero

Hybrid blades

  • A frame under an aero shell
  • Even pressure with a sleek profile

In your sizes: 16" + 16"

Check price on Amazon

Blades in your sizes

Each button opens that blade in your length.

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Compare these blades

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Model years covered

YearDriverPassengerArm
1978 16" 16" Bayonet This page
1977 16" 16" Bayonet This page
1976 16" 16" Bayonet This page
1975 16" 16" Bayonet This page

Good to know

Check against your old blades

Measure the rubber strip from end to end. It should match 16".

About this data

Fit data comes from one source so far; we're cross-checking every size against more sources. Consecutive model years with identical blades share one page.

How to fit your new blades

Step-by-step fitting for this arm type is on its way. The adapter chart inside the blade's box shows which adapter to use.

1975–1978 GMC C15 wiper FAQ

Quick answers about this car.

What size wipers fit a 1975–1978 GMC C15?

The 1975–1978 GMC C15 takes 16" driver-side and 16" passenger-side wiper blades. The arm uses a Bayonet connector.

Do all 1975–1978 GMC C15 model years use the same wipers?

Yes. Every GMC C15 from 1975 to 1978 shares the same blade lengths and arm type. If a blade fits one of these years, it fits them all.

What connector does the GMC C15 wiper arm use?

Bayonet. Most replacement blades include an adapter for it, so check the adapter chart in the package.

Can I use a wiper blade one size longer or shorter?

Stick with the listed sizes. A longer blade can hit the windshield frame or the other blade, while a shorter one leaves an unwiped gap. If your old blades don’t match our sizes, measure them end to end.

How often should I replace my wiper blades?

Most drivers change them every 6 to 12 months. Swap them sooner if they start to streak, chatter, or miss spots.

Different car?

Look up the wiper sizes for any car in our data.

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