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#730458 - December 07th 2017 12:58 am 1993 GMC Vandura Cruise Control  
Joined: Jul 2017
Posts: 11
TheRooster Offline
stranger
TheRooster  Offline
stranger

Joined: Jul 2017
Posts: 11
Southwest Missouri
So my cruise control is not working. I have tried replacing the multi-switch to no avail. Any assistance in troubleshooting this will be greatly appreciated.

Thanks!


The Rooster
1993 GMC Vandura 2500
#730469 - December 07th 2017 11:53 am Re: 1993 GMC Vandura Cruise Control [Re: TheRooster]  
Joined: Feb 2002
Posts: 388
Lionvan Offline
enthusiast
Lionvan  Offline
enthusiast

Joined: Feb 2002
Posts: 388
vanland Des Moines
Don't know for sure but a vacuum servo fixed my 90 Chevy. Got it from Rock Auto, way cheaper than the parts store. About all those Chevy GMC trucks are the same if you try a bone yard one.


[IMG]A foolish faith in authority is the worst enemy of truth. Question Authority.
#730473 - December 07th 2017 1:50 pm Re: 1993 GMC Vandura Cruise Control [Re: TheRooster]  
Joined: Oct 2016
Posts: 124
Gladiator Offline
member
Gladiator  Offline
member

Joined: Oct 2016
Posts: 124
Ohio
Inspect all the vacuum hose that runs from the intake manifold to the vacuum reservoir ball and hoses running to the cruise servo.

My 95 has electronic cruise servo but still uses the same hose for the hvac controls, one of the hoses was worn through.

[Linked Image]


1995 Emerald Green Chevy G20 350TBI Gladiator conversion
#730475 - December 07th 2017 2:53 pm Re: 1993 GMC Vandura Cruise Control [Re: TheRooster]  
Joined: Nov 2013
Posts: 796
Wedgy Offline
old hand
Wedgy  Offline
old hand

Joined: Nov 2013
Posts: 796
West Texas
Hey Roost, Welcome to the site!

My 90 G30 also has an inop CC. The Brake fuse must be good, and there is a brake module on the Driver's side above the battery. Mine is faulty, and throwing a code. The FSM has a dizzying diagnostic array of what may be the cause.
The switch is a weak link, but you got that so....

Hope you have luck finding the fault. Good Wrenching!


"Who New? Blue"
1990 Chevy G30 454
Church Van, maternity division

"Old Blue"
1988 Dodge B250

"Cabin Cruiser"
'94 Dodge B350 www.xplorermotorhome.com/
Xplorer MH model 230 230 hp MPI 360 LA Wedgy OD auto

Old vans never really die if we chose to let them live
#730603 - Yesterday at 04:04 PM Re: 1993 GMC Vandura Cruise Control [Re: TheRooster]  
Joined: Jul 2017
Posts: 11
TheRooster Offline
stranger
TheRooster  Offline
stranger

Joined: Jul 2017
Posts: 11
Southwest Missouri
Thank you, guys! I will check the fuses and then the vacuum hoses and let you know what you find.


The Rooster
1993 GMC Vandura 2500

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