Spec Sizes

Chevrolet Silverado 3500HD vs GMC Sierra 1500 Dimensions & Size Comparison

Comparing 2018 catalog dimensions. Chevrolet Silverado 3500HD · GMC Sierra 1500

Same scale for both vehicles. Generic silhouette — proportional to measured length, height, width, wheelbase, and clearance.

Side view
  • Length224.4 in – 258.4 in
  • Height76.8 in – 78.3 in
  • Wheelbase133.6 in – 167.7 in
  • Ground clearance8.0 in – 8.8 in
  • Curb weight5,985 lb – 7,239 lb
Front / width
  • Width80.1 in – 96.0 in
  • GMC Sierra 1500 width80.0 in

Which is bigger?

  • Length: GMC Sierra 1500 is 19.1 in shorter (241.4 in vs 222.3 in)
  • Width: GMC Sierra 1500 is 8.0 in narrower (88.0 in vs 80.0 in)
  • Height: Chevrolet Silverado 3500HD is 3.7 in taller (77.5 in vs 73.8 in)
  • Wheelbase: Chevrolet Silverado 3500HD has a 14.6 in longer wheelbase (150.6 in vs 136.0 in)
  • Ground clearance: GMC Sierra 1500 has 0.2 in more ground clearance (8.4 in vs 8.6 in)
  • Curb weight: Chevrolet Silverado 3500HD is 1,624 lb heavier (6,612 lb vs 4,988 lb)

Biggest size differences

  1. Curb weight: Chevrolet Silverado 3500HD is 1,624 lb heavier (6,612 lb vs 4,988 lb)
  2. Wheelbase: Chevrolet Silverado 3500HD has a 14.6 in longer wheelbase (150.6 in vs 136.0 in)
  3. Width: GMC Sierra 1500 is 8.0 in narrower (88.0 in vs 80.0 in)
  4. Length: GMC Sierra 1500 is 19.1 in shorter (241.4 in vs 222.3 in)
  5. Height: Chevrolet Silverado 3500HD is 3.7 in taller (77.5 in vs 73.8 in)

Practical verdicts

  • Easier to fit in a short garageGMC Sierra 1500 — GMC Sierra 1500 is shorter by 19.1 in Check garage fit for Chevrolet Silverado 3500HD · garage fit for GMC Sierra 1500
  • Narrower for tight parkingGMC Sierra 1500 — GMC Sierra 1500 is narrower by 8.0 in
  • More ground clearanceGMC Sierra 1500 — GMC Sierra 1500 has 0.2 in more clearance
  • Smaller exterior footprintGMC Sierra 1500 — Based on length × width (GMC Sierra 1500)

Dimension comparison

SpecChevrolet Silverado 3500HDGMC Sierra 1500Difference
Length241.4 in222.3 in19.1 in
Width88.0 in80.0 in8.0 in
Height77.5 in73.8 in3.7 in
Wheelbase150.6 in136.0 in14.6 in
Ground clearance8.4 in8.6 in0.2 in
Curb weight6,612 lb4,988 lb1,624 lb

Values use trim midpoints when a model year lists a range (e.g. length 224.4 in – 258.4 in).

Compare by year

Overlapping model years with dimension data.

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