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 11/5/2002 8:52 AM
 
Paul H., My unit has only a pressure switch that activates the park brake warning light on the dash and it has not leaked any. I wish I could be of more help. I have heard of a TSB also, but it was for checking the adjustment on the park brake only. It seems that there were a lot that were not holding because of incorrect adjustment. There could be another TSB that I have not heard about. One of my books says to always set the park brake pedal as this will let you know when it needs adjusting. Gilbert, you have the same problem as I did. Have you ever wondered what would happen if that leaking actuator would blowout while you were rolling down the Interstate? The park brake would be applied, all power steering fluid would be lost which would affect the steering and the service brakes! I cannot believe that Chevrolet has discontinued selling the actuator! If your unit has a park brake pedal (apparently some don't), the pedal sets the brake the same as the actuator does. I had the flare plug made by a friend who has a small machine shop. It was not easy or clean removing the actuator.
Jenks
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 11/5/2002 2:48 PM
 
Refer to GM Technical Service Bulletins 46-50-08 & 46-81-10 BOTH dated November 1994 Happy Motoring, Paul H.

Happy Motoring, Paul H.
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 11/5/2002 3:02 PM
 
In reading the posts, seems there are two different types of auto/park systems. My system is 100% hydraulic and is applied to the drive shaft where is had a brake shoe and a drum. There is no manual system on my coach. when you set, either the tranny in park or apply the emergency brak (all one system) then the brake is applied to the drive shaft. This pressure switch, when it goes bad allows the parking brak to be applied. There is NO moving the coach once that has happened. One person indicated he was going up a 5% grade when his applied and I guess it just about wrecked him, violently shook the whole coach. I am believing we are about to see a class action suit here on the safety concerns arounf this braking system. Happy Motoring, Paul H.

Happy Motoring, Paul H.
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 11/11/2002 3:58 AM
 
have a '94 with the second generation system (seperate pump and tank, electric switch actuated by shift lever). I've owned it since new. Have replaced the pressure maintenance switch four times in 90k miles - always keep one with me. Disengaging the brake manually is a nasty job.
Also, if the pedal apply adjustment is not correct you get the effect of no parking brake.
This has got to be one of the most mickey mouse things Chevy ever did.
Bill Carry

Bill Carry Sylvan Lake MI '94 Swinger 30' P-32 6.5 Turbo Diesel
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 1/18/2003 4:28 PM
 
Since my last post I have heard from many of you regarding the AutoPark/Emergency Brake system on the Chev. P-30 chassis. We are trying to get a "RECALL" of this terrible system and need your help. Any and all experiences you have had we need to know about. Send your info. to Mr. Jerry McCormick 679 Lolita Ln. Mesquite, NV 89027 or call 702-345-2096 OR e-mail P. Hoffman daytimer@avolve.net we need all the help you can give us. ALSO, please fill out a report with the NHTSA (national highway transportation safety board) search on google for the site on line. This is a MUST for a recall. You can fill out the form on line or send written correspondence. Your help will make the Chevrolet Division listen to the safety concerns of THEIR customers. Thank you. Happy Motoring, Paul H.

Happy Motoring, Paul H.
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 1/20/2003 4:41 PM
 
I've replaced the switch (called the pressure maintenance switch) three times on my '94. It has the set up with the seperate pump which is mounted in the box with the actuator. It has hung me up twice in bad places so I have been carrying a spare switch with me. Paid off when the third failure occured. The failures are all leaks. I have about 95 k miles now. I'd sure like to know about any GM service bulletin on the subject.
Bill Carry '94 30ft GB Swinger, P-32 Chevy with 6.5 diesel.

Bill Carry Sylvan Lake MI '94 Swinger 30' P-32 6.5 Turbo Diesel
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 1/22/2003 2:11 PM
 
Can you post the part number of the pressure switch?
Is there a way to disengage the brake so it can be moved. I have a friend whose coach is stranded in a shopping center and the Chevy dealers are no help.
Regards
Rick Clermont, Fl.

Regards Rick Clermont, Fl.
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 1/22/2003 5:08 PM
 
Rick, I have a 1994 class A with auto park brake system. It is one of the worse things Chevy ever made. I put up with it's problems for a couple of years. Going on while going down the road. now I use the foot brake each time I park. To disconect it your friend needs to go under the motor home and pull a small pin that holds the cable together. they show it in the chevy manuel. there are two cables in same box, one for foot brake and one for auto park. pull the pin and your friend will be on his way.you can find the connection by going to the brake drum behind the trany and folling the cable to the box.This will do it unless they have changed something on his RV. Good Luck Make sure he puts something between the wheels before pulling pin as it will take the brake off. Marty, 1994 Intruder This message was edited by Marty on 1-22-03 @ 5:24 PM

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 1/22/2003 7:54 PM
 
Rick, I don't have the part # right now, it's in the motor home and in storage for the winter...but I could make a trip and get it for you if a few days if it won't matter? Be happy to help you out.. Happy Motoring, Paul H.

Happy Motoring, Paul H.
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 1/22/2003 8:10 PM
 
Gilbert, I have sent you the info. you requested, but just in case here it is again: Web Page www.nhtsa.dot.gov (left side click on complaint form)
Address: U.S. Dept Transportation NHTSA Office of Defects NSA -10-01, 400 7th. St. Washington, CD 205590
Phone: 1-888-327-4236
Happy Motoring, Paul H. This message was edited by daytimer on 1-22-03 @ 8:12 PM

Happy Motoring, Paul H.
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