Author Topic: *SOLVED* Need help diagnosing hydroboost brakes on a 93 GMC Topkick  (Read 1914 times)

Online bd

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Good deal!  After you replace the relay, don't forget to readjust the brake switch.   ;)
Rich
It's difficult to know just how much you don't know until you know it.
In other words... if people learn by making mistakes, by now I should know just about everything!!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)

Offline zieg85

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    • 73-87 GM squarebody extended cab and conversions up to 91 R/V series
Good deal!  After you replace the relay, don't forget to readjust the brake switch.   ;)

Thanks again Rich and all. 
Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
https://www.facebook.com/groups/248658382003506/

Offline zieg85

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    • 73-87 GM squarebody extended cab and conversions up to 91 R/V series
The relay fixed it.
Carl 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction
https://www.facebook.com/groups/248658382003506/