Need some schooling on doors and fenders

[1972 Jimmy]

I have a 1972 jimmy and looking to replace/repair the doors and front fenders. What is the difference between 1969-71 doors and 72 doors? Is it just the screw dimple under the vent window? And for the fenders, what's the difference between chevy and gmc? Can they be inter changed with different grill mounting holes? Also, what are the difference in 67-70 & 71-72?
Thanks?
Eric

[doo142]

Things I know, wing vent screw(as mentioned), window channel in rear of door is different , regulator shafts are longer to fit that door panel, door caps are different ( on top of wing),72 panel snaps in on bottom, there is threaded insert along bottom for 70, minor details I've noticed

[DeadheadNM]

I've read that 68-72 GMC fenders are interchangeable and the same as 68 Chevy fenders.

[skorpioskorpio]

'67 fenders are the same for both GMC and Chevy and have no side marker light holes.

'68 Chevy and '68-72 GMC fenders are all the same and are identical to the '67 fenders except that they do have side marker light holes.

'69-72 Chevy fenders are about 2" shorter than the fenders described above to match the length of the later more blunt front hood.

'69-72 GMCs use a large trim piece riveted to the top of the grill that sits in front of the hood to fill the gap caused by using the shorter later hood and the longer earlier fenders.

'67 GMC grills have the letters G-M-C embossed into the center of the grill. The vertical and horizonal bars cross in the same plane in the center to form a mild intersecting point.

'68-70 GMC grills are the same as '67 grills without the embossing.

'71-72 GMC grills have a stylised embossing in the vertical bar and the horizonal bar is in a backset plane from the vertical.

'67-68 GMC grills have a small trim piece riveted to the top of the grill that sits under the longer "slant nose" '67-68 hood.

'69-72 GMC grills have a large trim piece riveted to the top of the grill that sits in front of the shorter "blunt nose" '69-72 hood.

'67-68 GMCs and Chevys have a bumper filler panel that goes between the core support and under top edge of the bumper. The panel was simply eliminated in later '69-72 trucks.

There are slight differences between core supports between years and of coarse GMC 4 lamp core supports are different from Chevy 2 lamp core supports, though all the GMC core supports are essentially interchangable with a hole or two missing or extra between years. The missing or extra holes corospond to the hood/grill combinations and whether the bumper filler panel is present or absent. Hood latches are also specific to hood type.

[1972 Jimmy]

you guys are awesome! Thank you so much for the information! You guys have definitely answered all my questions. Now I just need to find the right fenders and doors for sale.....
Thanks again,
Eric