GMC Sierra 2500 - Problems, Statistics, and Analysis

GMC Sierra 2500 owners have reported a total of 1,969 problems for their cars built in the 30 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 Sierra 2500. The 2004 GMC Sierra 2500 cars have the most problems reported (169 problems).

Table 1. Total number of problems by model year for GMC Sierra 2500

Model Year	Number of Problems
2026 Sierra 2500	9
2025 Sierra 2500	30
2024 Sierra 2500	124
2023 Sierra 2500	33
2022 Sierra 2500	49
2021 Sierra 2500	60
2020 Sierra 2500	105
2019 Sierra 2500	38
2018 Sierra 2500	43
2017 Sierra 2500	48
2016 Sierra 2500	73
2015 Sierra 2500	96
2014 Sierra 2500	40
2013 Sierra 2500	48
2012 Sierra 2500	38
2011 Sierra 2500	74
2010 Sierra 2500	11
2009 Sierra 2500	36
2008 Sierra 2500	75
2007 Sierra 2500	92
2006 Sierra 2500	76
2005 Sierra 2500	153
2004 Sierra 2500	169
2003 Sierra 2500	129
2002 Sierra 2500	113
2001 Sierra 2500	88
2000 Sierra 2500	54
1999 Sierra 2500	36
1998 Sierra 2500	17
1997 Sierra 2500	12

🔍 Common problems of GMC Sierra 2500

The following chart shows the 30 most common problems for GMC Sierra 2500 cars. The number one most common problem is related to the vehicle's service brakes, hydraulic (412 problems). The second most common problem is related to the vehicle's electrical system (260 problems).

Table 2. Common problems of GMC Sierra 2500

Problem Category	Number of Problems
Service Brakes	412
Electrical System	260
Engine And Engine Cooling	184
Power Train	165
Equipment	158
Air Bag	156
Steering	113
Other Fuel System	79
Structure	76
Exterior Lighting	64

Tire	54
Suspension	32
Vehicle Speed Control	32
Visibility	29
Diesel Fuel System	24
Gasoline Fuel System	22
Wheel	21
Seat Belt	18
Electronic Stability Control	13
Latches/locks/linkage	10
Forward Collision Avoidance	10
Unknown Or Other	8
Parking Brake	7
Back Over Prevention	6
Seats	5
Lane Departure	4
Air Brake	3
Traction Control System	2
Communication	1
Interior Lighting	1

📉 Compare Reliability Across Model Years Using PPMY Index

It would not be fair to compare the GMC Sierra 2500 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 Sierra 2500 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 Sierra 2500 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 Sierra 2500 Model Years

Sierra 2500 Model Year	Problems	Sales [1]	Vehicle Age	PPMY Index
2022	49	40,396	4	0.30
2020	105	39,411	6	0.44
2019	38	28,757	7	0.19
2018	43	12,046	8	0.45
2017	48	16,586	9	0.32
2016	73	23,292	10	0.31
2015	96	31,126	11	0.28
2014	40	8,073	12	0.41
2013	48	20,544	13	0.18
2012	38	16,749	14	0.16
2011	74	19,469	15	0.25
2010	11	8,684	16	0.08
2009	36	15,043	17	0.14
2008	75	16,357	18	0.25
2007	92	30,132	19	0.16
2006	76	33,975	20	0.11
2005	153	62,693	21	0.12
2004	169	70,300	22	0.11
2003	129	56,096	23	0.10
2002	113	54,285	24	0.09
2001	88	45,177	25	0.08
2000	54	37,862	26	0.05

📊 Number of Problems Reported During the First Year

Another way to measure the reliability across the model years of the GMC Sierra 2500 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 Year	Problems Reported
2026 Sierra 2500	9
2025 Sierra 2500	24
2024 Sierra 2500	39
2023 Sierra 2500	5
2022 Sierra 2500	8
2021 Sierra 2500	4
2020 Sierra 2500	13
2019 Sierra 2500	2
2018 Sierra 2500	7
2017 Sierra 2500	11
2016 Sierra 2500	11
2015 Sierra 2500	18
2014 Sierra 2500	7
2013 Sierra 2500	1
2012 Sierra 2500	1
2011 Sierra 2500	5
2010 Sierra 2500	3
2009 Sierra 2500	4
2007 Sierra 2500	8
2006 Sierra 2500	11
2005 Sierra 2500	9
2004 Sierra 2500	4
2003 Sierra 2500	5
2002 Sierra 2500	4
2001 Sierra 2500	1
2000 Sierra 2500	5
1999 Sierra 2500	5
1998 Sierra 2500	2
1997 Sierra 2500	2

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