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(The author disclaims any liability for yawns, lethargy or sleeping that may occur while reading this "slightly" long post 
)
Then
• these panels (deliveries / trucks / vans) are Chevrolet C/K-Series Apache Panel
(except:
∗ http://www.imcdb.org/vehicle_65180-Chevrolet-Panel-Truck-1960.html
∗ http://www.imcdb.org/vehicle_251778-Chevrolet-Panel-Truck-1960.html
∗ http://www.imcdb.org/vehicle_414545-Chevrolet-Panel-Truck-1960.html
∗ http://www.imcdb.org/vehicle_187429-Chevrolet-Panel-Truck-C-Series-1960.html
∗ http://www.imcdb.org/vehicle_552736-Chevrolet-Panel-Truck-C-Series-1961.html
that can't be clearly identified as Chevrolet. See the "Non-identifiable trucks part" below)
• these ones are Chevrolet C/K-Series Panel.
(except 10 or more that can't be more identified than GM Panels. I'll note it in comments)
• Task-Force:
For the name, 1956 brochure cover says "Panel trucks", but the inner pictures have only "Panel model 3105 / 3805" captions. 1958 and 1959 brochures use "Panels" only.
→ 4 1958-59 Chevrolet Task-Force Apache Panels (2 wrong MY amongst them, one already noted in comments, the other soon to be);
→ 17 1955-57 Chevrolet Task-Force Panels.
/!\ This one is a 1955 Advance-Design Panel, it's what is called a "1955 1st Series" ("2nd Series" being the 1955 Task-Force trucks), as said by 56chevy in the comments.
• Advance-Design:
For the name, the word "Panel" is alone in the table of contents of the 1948 brocure and in the pages dedicated to the 3105 and 3805 models. Same thing for the 1951 brochure and the 1954 one (except there is no T.O.C. for this one).
→ 43 1947-54 Chevrolet Advance-Design Panels (plus the sole "1955 1st Series" model that was mentioned in the Task-Force part)
- plus these 4 models without MY (1947 by default - date proposal in comments for all, in fact, but "lost" since April
):
∗ http://www.imcdb.org/vehicle_499943-Chevrolet-Panel-Truck.html
∗ http://www.imcdb.org/vehicle_260427-Chevrolet-Panel-Truck-3105.html
∗ http://www.imcdb.org/vehicle_289883-Chevrolet-Panel-Truck-3800.html
∗ http://www.imcdb.org/vehicle_290087-Chevrolet-Panel-Truck-3800.html
By the way, all 22 IMCDb 1948 Panels models should be given a 1947 model year: the Advance-Design trucks line was unveiled in June 1947 as a "mid-1947" MY. And no exterior changes were made to the trucks until early 1949 (the gas tank change).
It's a real mess, for the names. I fear to start digging in these trucks pages
This concerns 17 trucks. Maybe only 16, as one is said to be a Delivery Sedan. I haven't yet make any real researches about the pre-1947 trucks lines, so I have no idea on how they can be called. Maybe we should just standardize the model names (Panel truck?), so that it will be easier to find them later if anyone has a good solution?
------------------------------------------------------
Non-identifiable trucks part
------------------------------------------------------
Similar question about "GM only" trucks led to a reminder given by t0nkatracker about an already existing use in IMCDb: the "GM only solution". Shouldn't it be done the same way here to preserve the consistency of the naming?
• For the "Panel only" name:
For Chevrolet literature, cf. above and the 1970 brochure (it was the last year of production for the panels). 1954, 1964 and 1967 GMC brochures show that these trucks were also called "panels" only, without any "trucks" or anything else more.
Can we assume it was the same for both makes for the whole 1947-70 interval?
• About the trucks line names:
- 1955-59 trucks: GMC name for these trucks line was "Blue Chip" (without hyphen). So "GM Task-Force" would be a kind of misnomer... GM Task-Chip? GM Blue-Force?
More serious, GM Blue Chip/Task-Force Panel? Not an easy name, but that way an advanced research with just the "Blue Chip" (or "Task-Force") name will give both GM and GMC (or GM and Chevrolet) trucks...
- 1947-55 trucks: GMC trucks seemed to be called "New Design" models. But I haven't find (for now) any contemporary document with that name. Lot of enthusiasts just call these models GMC Advance-Design trucks, but enthusiasts without sources are not my favorite leads... GM Advance-Design/New Design Panel? Same idea as above for the advanced research.
2 panels of this era are already identified as GM "Panel vans". The 2 others should be categorized into the GM C/K-Series Panel pages.
- C/K were... C/K for both Chevy and GMC, so no problem for a GM C/K-Series Panel. For the record, GM C/K-Series already exists in the IMCDb.
)To me it seems cleaner the first solution, as suggested previously.
Even if the panel versions aren't linked together (which does not have so much interest) they are more close to the original names.
Even if the panel versions aren't linked together (which does not have so much interest) they are more close to the original names.
Then
• these panels (deliveries / trucks / vans) are Chevrolet C/K-Series Apache Panel
(except:
∗ http://www.imcdb.org/vehicle_65180-Chevrolet-Panel-Truck-1960.html
∗ http://www.imcdb.org/vehicle_251778-Chevrolet-Panel-Truck-1960.html
∗ http://www.imcdb.org/vehicle_414545-Chevrolet-Panel-Truck-1960.html
∗ http://www.imcdb.org/vehicle_187429-Chevrolet-Panel-Truck-C-Series-1960.html
∗ http://www.imcdb.org/vehicle_552736-Chevrolet-Panel-Truck-C-Series-1961.html
that can't be clearly identified as Chevrolet. See the "Non-identifiable trucks part" below)
• these ones are Chevrolet C/K-Series Panel.
(except 10 or more that can't be more identified than GM Panels. I'll note it in comments)
For the Advance Design, same as Task Force, I suppose.
• Task-Force:
For the name, 1956 brochure cover says "Panel trucks", but the inner pictures have only "Panel model 3105 / 3805" captions. 1958 and 1959 brochures use "Panels" only.
→ 4 1958-59 Chevrolet Task-Force Apache Panels (2 wrong MY amongst them, one already noted in comments, the other soon to be);
→ 17 1955-57 Chevrolet Task-Force Panels.
/!\ This one is a 1955 Advance-Design Panel, it's what is called a "1955 1st Series" ("2nd Series" being the 1955 Task-Force trucks), as said by 56chevy in the comments.
• Advance-Design:
For the name, the word "Panel" is alone in the table of contents of the 1948 brocure and in the pages dedicated to the 3105 and 3805 models. Same thing for the 1951 brochure and the 1954 one (except there is no T.O.C. for this one).
→ 43 1947-54 Chevrolet Advance-Design Panels (plus the sole "1955 1st Series" model that was mentioned in the Task-Force part)
- plus these 4 models without MY (1947 by default - date proposal in comments for all, in fact, but "lost" since April
):∗ http://www.imcdb.org/vehicle_499943-Chevrolet-Panel-Truck.html
∗ http://www.imcdb.org/vehicle_260427-Chevrolet-Panel-Truck-3105.html
∗ http://www.imcdb.org/vehicle_289883-Chevrolet-Panel-Truck-3800.html
∗ http://www.imcdb.org/vehicle_290087-Chevrolet-Panel-Truck-3800.html
By the way, all 22 IMCDb 1948 Panels models should be given a 1947 model year: the Advance-Design trucks line was unveiled in June 1947 as a "mid-1947" MY. And no exterior changes were made to the trucks until early 1949 (the gas tank change).
For older ones, we could either list them as Panel model, or without model, just Panel in extra info, not sure what would be the best.
It's a real mess, for the names. I fear to start digging in these trucks pages
This concerns 17 trucks. Maybe only 16, as one is said to be a Delivery Sedan. I haven't yet make any real researches about the pre-1947 trucks lines, so I have no idea on how they can be called. Maybe we should just standardize the model names (Panel truck?), so that it will be easier to find them later if anyone has a good solution?
------------------------------------------------------
Non-identifiable trucks part
------------------------------------------------------
Similar question about "GM only" trucks led to a reminder given by t0nkatracker about an already existing use in IMCDb: the "GM only solution". Shouldn't it be done the same way here to preserve the consistency of the naming?
About the GM ones, how are the equivalent GMC named?
We could default to Chevrolet rather than use the generic GM, if more common and if that helps listing them.
We could default to Chevrolet rather than use the generic GM, if more common and if that helps listing them.
• For the "Panel only" name:
For Chevrolet literature, cf. above and the 1970 brochure (it was the last year of production for the panels). 1954, 1964 and 1967 GMC brochures show that these trucks were also called "panels" only, without any "trucks" or anything else more.
Can we assume it was the same for both makes for the whole 1947-70 interval?
• About the trucks line names:
- 1955-59 trucks: GMC name for these trucks line was "Blue Chip" (without hyphen). So "GM Task-Force" would be a kind of misnomer... GM Task-Chip? GM Blue-Force?
More serious, GM Blue Chip/Task-Force Panel? Not an easy name, but that way an advanced research with just the "Blue Chip" (or "Task-Force") name will give both GM and GMC (or GM and Chevrolet) trucks...
- 1947-55 trucks: GMC trucks seemed to be called "New Design" models. But I haven't find (for now) any contemporary document with that name. Lot of enthusiasts just call these models GMC Advance-Design trucks, but enthusiasts without sources are not my favorite leads... GM Advance-Design/New Design Panel? Same idea as above for the advanced research.
2 panels of this era are already identified as GM "Panel vans". The 2 others should be categorized into the GM C/K-Series Panel pages.
- C/K were... C/K for both Chevy and GMC, so no problem for a GM C/K-Series Panel. For the record, GM C/K-Series already exists in the IMCDb.