One problem related to power steering fluid has been reported for the 2005 GMC Sierra 2500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 GMC Sierra 2500 based on all problems reported for the 2005 Sierra 2500.
The hydraulic brake booster's pressure accumulator cracked and /or separated from the hydro-boost assembly during normal vehicle operating conditions. The presence of this crack or fractured surface allowed the hydraulic fluid to leak from the accumulator circuit of the booster assembly. The loss of fluid caused increased steering and braking effort.