73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Suburbans => Topic started by: 87suburban on February 25, 2012, 03:14:37 pm
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when troubleshooting the cruise control on my 87 suburban, can y'all tell me what i should be lookin for when testing as well as how to test all the components for the cruise to see why it doesn't work.
thanks
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Yours is electronic and not vacuum correct ?
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i would imagine its a little bit of both, because i got vacuum lines going to the servo an to a switch on the brake pedal. not to mention to that, my truck has throttle body injection. so im assuming that its a combination of both.
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I'll be watching this thread... When I parted out the 1987 C10, mainly for the 700R4 for my 1985 I pulled out the dealer installed cruise control which utilized the factory turn signal cruise control stalk. I am wanting to install it in my 85 extended cab and will have questions I am sure...
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thats cool, im trying to figure out why mine doesn't work an its starting to drive me crazy a little lol. although im willing to almost bet it something stupid to why its not working, just got to figure out what it is. anyway, on the truck u parted out, did it have two switches on the brake pedal, one switch for the brake lights with two plugs and a vacuum switch?
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thats cool, im trying to figure out why mine doesn't work an its starting to drive me crazy a little lol. although im willing to almost bet it something stupid to why its not working, just got to figure out what it is. anyway, on the truck u parted out, did it have two switches on the brake pedal, one switch for the brake lights with two plugs and a vacuum switch?
I think it had 2, I just don't remember. I boxed everything up. Most older cruise controls I have worked on had issues with vacuum leaks either from brittle plastic pieces or cracked hoses.
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ok, what other problems did the older cruise systems have? just tryin to get an idea of what all i need to look for to try to figure mine out. you wouldnt know where a "cruise control module" be located as well as what it looks like?
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I have never had a truck fancy enough nor part out one fancy enough that had factory cruise control. I took the entire underdash wiring out of the 91 Suburban but I didn't pay attention to the cruise control components.
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ok just wondered, cause im assuming the cruise is factory. of course my suburban is pretty much loaded lol
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PM Vile if he doesn't chime in. Maybe he has a wiring diagram/troubleshooting page on a cruise system.
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oh ok, cause i need to see how to check all the components to make sure they are working properly. as well as the specs on checking the switches both electrical an vacuum
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well on my way home from work, i found out that my cruise works. however, it only worked for about 5 or 10 minutes, then cut out an couldnt get it to work again. any thoughts on this? im thinking maybe a loose connection somewhere.
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well on my way home from work, i found out that my cruise works. however, it only worked for about 5 or 10 minutes, then cut out an couldnt get it to work again. any thoughts on this? im thinking maybe a loose connection somewhere.
Now that sounds reasonable, could be a loose electrical or mechanical (vacuum ) problem. Might be hard to chase down, but you should just go through your whole system to make sure there are not 2 or more "loose" connections.
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thats what im startin to wonder, just got to figure out where its at. but heres another thing to, ive noticed that to get the cruise to engage, i have to tinker with the switch to get it to engage. another thing, when i hit the button to increase my speed, it shut off. then to get it to re-engage, it seems like i had to shut it off an keep pressing the button a couple times to get it come back on again. but i'll keep updating my findings on what i finding out with my cruise, to see if y'all can help me out to try to figure out what could be the problem
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thats what im startin to wonder, just got to figure out where its at. but heres another thing to, ive noticed that to get the cruise to engage, i have to tinker with the switch to get it to engage. another thing, when i hit the button to increase my speed, it shut off. then to get it to re-engage, it seems like i had to shut it off an keep pressing the button a couple times to get it come back on again. but i'll keep updating my findings on what i finding out with my cruise, to see if y'all can help me out to try to figure out what could be the problem
I would start with the switch itself, sounds like there is a short for sure in the switch.
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ok, what other problems did the older cruise systems have?
They didn't work worth a flip.. My '87 never worked correctly. You would have to be on a really long trip to even use it in my opinion.
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well i replaced the multi-switch on the column, talk bout a royal pain in the ass lol. now to make a long story short, i ended up cutting the wires for the switch so i could "fish it" down through the column then soldered them back together. before i changed the switch, the cruise never worked an now since i changed it, it somewhat works. well apparently on its terms. also what problems plagued these early cruise control systems?