Regular Production Option codes for this 1992 Sonoma.  RPO codes are codes printed on a label located in the glove box of this truck.  These cards are put there by GM to determine the options that are selected for this truck.  The break down for these codes was found on the Turbo Regal Web Site, in the RPO section.  These codes work on all GM cars.  If you have any questions, please feel free to ask at JNCAyotte@aol.com.

  1. AU3  -  Electric Door Locks
  2. A31  -  Power Windows
  3. A52  -  Front Bench Seat
  4. B32  -  Front Floor Mats  (Rubber)
  5. B96  -  Wheel Opening Moldings
  6. C6F  -  GVW Rating  5150 lbs.
  7. C60  -  HVAC with Front Manual Controls
  8. DC4  -  Rear View Mirror with Reading Lamps and Tilt
  9. D?4  -  Door Armrest?/Sunshade with Mirror
  10. D44  -  Painted Outside Mirrors
  11. E63  -  Fleetside Pickup Box
  12. FF4  -  Torsion Bar Spring Adjustment (C)
  13. FF5  -  Torsion Bar Spring Adjustment (D)
  14. GU6  -  Rear Axle 3.42 Ratio
  15. G51  -  Heavy Duty Rear Springs - Var 2
  16. JM3  -  Brake Booster, 240MM Tandem, High Flow
  17. K34  -  Electronic Cruise Control
  18. LB4  -  4.3L 6 Cyl. 90° TBI
  19. MD8  -  4 Speed Auto - THM 700-4
  20. MXO  -  Overdrive Provisions
  21. NA5  -  Tier O Emissions
  22. NQE  -  Single 20 Gallon Fuel Tank
  23. N40  -  Non-variable Ratio Power Steering
  24. N90  -  15"x7" Cast AL Wheels   4.75" Bolt Circle
  25. QDB  -  (Tire Size Code, Unknown)
  26. SLA  - Shreveport, LA
  27. SLM  - Order Code
  28. TFE  -  Order Code
  29. UP8  -  Radio
  30. UX1  -  Radio
  31. U73  -  Fixed Antenna
  32. VF6  -  Rear Step Bumper
  33. VRS  -  Trailer Something?
  34. V01  -  Heavy Duty Radiator
  35. V75  - 
  36. XEB  -  Tire Front P235/75R15 NWW
  37. YC2  -  Convenience Package - Decor Level #2
  38. YD3  -  Axle, (Base) for scheduling GVW Plate
  39. YD5  -  Spring, Front Base Equipment
  40. YEB  -  Tire Rear P235/75R15 NWW
  41. ZEB  -  Tire, Spare P235/75R15 NWW
  42. ZM5  -  Skid Plates -Sales Package
  43. ZM7  -  Tilt Wheel, Delay Wipers
  44. ZQ2  -  Driver's Convenience - Sales Package
  45. ZY2  -  Two Tone Paint
  46. Z88  -  Name Plate GMTB
  47. 1SD  -  Option Package 4
  48. 1SZ  - 
  49. 13D  -  Interior Cloth - Slate Grey -Light (D)
  50. 13I  -  Interior Trim - Smoke Grey (91)
  51. 44U  -  Primary Exterior Color - Forest Green Metallic
  52. 6CR  - 
  53. 7CR  - 
  54. 90L  -  Secondary Color -  Grey Metallic  (91)

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