My truck has a 3rd door. It has the RPO code E24 which states
OOR,HINGED SIDE REAR CARGO/SEAT ACCESS. This was a common option to get on 96-99 classic 1/2 tons, but I DON'T believe it was standard.
If you want to find out what features you have,
@Caman96 gave me this great website to look up RPO codes. It's free and all you have to do is put your VIN number in
www.free-vin-decoder.com
Here's my truck for comparison:
free vin decode,vin report for 2GCEK19R7V1154501
www.free-vin-decoder.com
TFL Classics has a video on a 1997 Chevrolet K1500. This option doesn't have the 3rd door.
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If you're a history nerd like me, here's a sales video on 1997 Chevrolet C/K Pickups. This video was intended for car salesmen at GM dealers and wasn't meant to be viewed by the public. A bunch of old 90s and 00s videos have been leaked online and it's pretty cool if you're into that stuff. Otherwise, you'll find it boring and dry. They mention how you could get an extended cab pickup with or without the 3rd door depending on what you ordered back when you could order these trucks new.
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