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clinebarger · 01-15-2012, 08:30 PM

Take off the drums, See if the park brake lever pin came out or the adjuster/park brake link is off.

GM used 2 different drum brake systems on GMT400 1/2 ton truck/SUVs, A 10" leading/trailing-non servo style...........And a 11" Duo-Servo style. Knowing what you have will help.

01-15-2012, 08:30 PM	#2
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: Problems with emergency brake Take off the drums, See if the park brake lever pin came out or the adjuster/park brake link is off. GM used 2 different drum brake systems on GMT400 1/2 ton truck/SUVs, A 10" leading/trailing-non servo style...........And a 11" Duo-Servo style. Knowing what you have will help.