dcrow Posted April 10, 2017 Share Posted April 10, 2017 I have a 2007 ch and the trailer seams to be doing most of the stopping. The trailer is older and does not have abs. When bob tailing it seams to stop ok but when hooked up to the trailer I can feel its the trailer doing most of the stopping. My first guess is the foot valve but I'm not positive so I don't want just start changing parts. Thanks for any help. Quote Link to comment https://www.bigmacktrucks.com/topic/49493-2007-ch-foot-valve/ Share on other sites More sharing options...
Mackpro Posted April 19, 2017 Share Posted April 19, 2017 We had alot of rear brake problems on some of the last CXN's and CHN's. Something in the rear relay valve/ABS modulator valves was going bad. At the time you could buy all 3 valves assembled together and made for a easy install. All 3 were bolted together on the crossmember in front of the front drive axle like the pic shows. Quote Link to comment https://www.bigmacktrucks.com/topic/49493-2007-ch-foot-valve/#findComment-367819 Share on other sites More sharing options...
dcrow Posted April 30, 2017 Author Share Posted April 30, 2017 Well that doesn't look cheap! How do I test it to make sure its that and not something else? Quote Link to comment https://www.bigmacktrucks.com/topic/49493-2007-ch-foot-valve/#findComment-368706 Share on other sites More sharing options...
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