14 bolt brakes - can you spot the missing piece?

[Vanishing Point]

Without knowing more specifics such as engine cubic inch (LO5 5.7L, L19 7.4L, or L65 Diesel, SE, SLE, etc.) and brake shoe diameter size, may I suggest replacing your Rear Brake Drum Backing Plates in a pair since they are probably pretty rusted and worn (as you have suggested)?
And that you check in your glove box for either RPO code numbers JD6 or JD7 on your 3/4 ton vehicle so that you obtain the Correct Brake Drum backing plates both (Drivers and Passenger side) for your Suburban vehicle. That way, when reassembling the new brake drum hardware, everything will fit correctly without any problems. Do keep us informed on your progress. And Good Luck. And as an example the following was added for your perusal.

GMPartsGiant.com​

Genuine GM Brake Backing Plate​

Brake Dust Shield
My VehicleChange Vehicle
1995 Chevrolet Suburban K2500
8 Cyl 7.4L EFI; Suburban 3/4 Ton

7 Brake Backing Plates found for the vehicle you selected.​

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  Plate,Rear Brake Backing
  Part Number: 15622344
  Fits Your Vehicle
  Other Name: PLATE, Brake Flange/Backing; Backing Plate
  • Position: Passenger Side
  • Fitting Vehicle Options: CK2(06)(L19,L65,JD7)
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  Retail Price: $196.33
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  GM 15622343​

  Plate,Rear Brake Backing
  1991-2002 GM
  
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  • Part Description
    PLATE, Brake Flange/Backing
  • Manufacturer
    General Motors
  Customer Questions & Answers
  Additional information needed to verify part fitment
  1995 Chevrolet Suburban K2500Suburban 3/4 Ton
  The location this part fits:
  • Driver Side
  The vehicle options this part fits:
  • Fitting Vehicle Options: CK2(06)(L19,L65,JD7)
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  Your Price: $111.94
  Retail Price: $203.52
  You Save: $91.58
  
  
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  Plate,Rear Brake Backing(Welding)
  Part Number: 15650129
  Vehicle Specific
  Other Name: PLATE, Brake Flange/Backing; Backing Plate
  • Position: Driver Side
  • Fitting Vehicle Options: CK1,2(JB6,JD6)
  Your Price: $54.88
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• GM 15650130​

  Plate,Rear Brake Backing(Welding)
  1988-2000 GM
  
  
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  • Part Description
    PLATE, Brake Flange/Backing
  • Manufacturer
    General Motors
  Customer Questions & Answers
  This part fits the vehicle you selected:
  1995 Chevrolet Suburban K2500Suburban 3/4 Ton
  The location this part fits:
  • Passenger Side
  The vehicle options this part fits:
  • Fitting Vehicle Options: CK1,2(JB6,JD6)
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  Your Price: $49.68
  Retail Price: $98.58
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  Qty:1 ea
  
  

 

[termite]

Without knowing more specifics such as engine cubic inch (LO5 5.7L, L19 7.4L, or L65 Diesel, SE, SLE, etc.) and brake shoe diameter size, may I suggest replacing your Rear Brake Drum Backing Plates in a pair since they are probably pretty rusted and worn (as you have suggested)?

Very much appreciate the advice on changing backing plates in pairs when neccessary. Fortunately they are solid on the suburban. My anecdote on rust was slightly off topic as it was regarding a 4runner (although it was drum brakes on that axle and got new backing plates).

Suppose i should be listing more specifics on the vehicle. May have a friend at a chevy dealer parts counter that can pull part numbers for me if I'm having trouble finding them.