Early part number info 1969-70 Chevy grille - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**1970cstblazer** · 03-05-2021, 08:54 AM

After doing some research, I have found these original Chevy 1969-70 GM part numbers, and when they were superseded with the final part numbers that lasted the entire run.

1969-70 Steel black painted headlight bezels:

3937473 LH changed to 3990705 in 8/1971

3937474 RH changed to 3990706 in 12/1971

1969-70 Outer grille shell:

3980036 changed to 3985054 in 6/1971

1969 Inner grille:

3980037 changed to 3985056 in 8/1971

The likelihood of coming across these NOS parts 50 years later is slim, but I just purchased the original steel headlight bezels, so they are out there. I would imagine that the 3980036 grille has the black painted strips that run the entire width of the center grille bar versus the 3985054 GM replacement and all of the reproductions. Its very easy to see which trucks still have their original grille shells.

**Vicente Aceves** · 03-05-2021, 09:29 AM

Great info. Thanks for sharing.

I didn’t know that about the black paint indicating an original. I’ll be on the look out now!

03-05-2021, 08:54 AM	#1
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 1,277	Early part number info 1969-70 Chevy grille After doing some research, I have found these original Chevy 1969-70 GM part numbers, and when they were superseded with the final part numbers that lasted the entire run. 1969-70 Steel black painted headlight bezels: 3937473 LH changed to 3990705 in 8/1971 3937474 RH changed to 3990706 in 12/1971 1969-70 Outer grille shell: 3980036 changed to 3985054 in 6/1971 1969 Inner grille: 3980037 changed to 3985056 in 8/1971 The likelihood of coming across these NOS parts 50 years later is slim, but I just purchased the original steel headlight bezels, so they are out there. I would imagine that the 3980036 grille has the black painted strips that run the entire width of the center grille bar versus the 3985054 GM replacement and all of the reproductions. Its very easy to see which trucks still have their original grille shells. __________________ 1970 K/5 Blazer CST 4WD, Bronze, 93k ACT. miles, 350, 4 speed, positraction, 16.5" x 8.25" wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration in progress... 1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 41k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 60k miles, 3.6, 8L45, 3.23 LS, 18" wheels

03-05-2021, 09:29 AM	#2
Vicente Aceves Senior Member Join Date: Oct 2018 Location: Long Beach CA Posts: 459	Re: Early part number info 1969-70 Chevy grille Great info. Thanks for sharing. I didn’t know that about the black paint indicating an original. I’ll be on the look out now!



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