GMC Terrain - Problems, Statistics, and Analysis

GMC Terrain owners have reported a total of 1,270 problems for their cars built in the 11 model years listed in the chart below. The chart shows the number of problems reported across all service years for each given model year of the GMC Terrain. The 2010 GMC Terrain cars have the most problems reported (317 problems).

Table 1. Total number of problems by model year for GMC Terrain

  Common problems of GMC Terrain

The following chart shows the 24 most common problems for GMC Terrain cars. The number one most common problem is related to the vehicle's engine and engine cooling (305 problems). The second most common problem is related to the vehicle's visibility (176 problems).

Table 2. Common problems of GMC Terrain

Problem Category Number of Problems
  Engine And Engine Cooling
305
  Visibility
176
  Power Train
128
  Equipment
110
  Electrical System
107
  Air Bag
81
  Electronic Stability Control
62
  Other Fuel System
56
  Structure
43
  Steering
37
   
  Vehicle Speed Control
33
  Service Brakes
25
  Exterior Lighting
21
  Seats
18
  Seat Belt
17
  Gasoline Fuel System
12
  Suspension
12
  Tire
9
  Wheel
9
  Unknown Or Other
3
  Latches/locks/linkage
3
  Child Seat
1
  Traction Control System
1
  Back Over Prevention
1

  Compare Reliability Across Model Years Using PPMY Index

It would not be fair to compare the GMC Terrain of an older model year to newer model years since older vehicles have been in service longer and thus are expected to have more problems. In order to compare the reliability across Terrain model years, we use the PPMY index which is defined as the problems reported per thousand vehicles per Year. A smaller PPMY index indicates greater reliability of the given model year cars.

    PPMY = P / S / Y * 1000,

where P = total problems reported during the life of a GMC Terrain model year; S = total units sold of the model year; Y = years since the debut of the model year (the age of the vehicle).

The results are shown in Table 3.

Table 3. Use PPMY Index to Compare Reliability Across Terrain Model Years

Terrain
Model Year
Problems Sales [1] Vehicle
Age
PPMY Index
  2018 4543,0351    
1.05
  2017 1297,3612    
0.06
  2016 2281,5963    
0.09
  2015 82116,2754    
0.18
  2014 9591,2005    
0.21
  2013 169108,2636    
0.26
  2012 224100,1037    
0.32
  2011 29983,5358    
0.45
  2010 31748,6199    
0.72

  Number of Problems Reported During the First Year

Another way to measure the reliability across the model years of the GMC Terrain is to use the total number of problems reported during the vehicle's first year in service, as shown in the Table 4.

Table 4. Number of problems in vehicle's; first service year

Model YearProblems Reported
  2018 Terrain
41
  2017 Terrain
6
  2016 Terrain
4
  2015 Terrain
29
  2014 Terrain
20
  2013 Terrain
18
  2012 Terrain
13
  2011 Terrain
61
  2010 Terrain
37


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