Labor Day Putting down your wrenches or time for
MORE wrenching? 
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| | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | As Spanky posted, your friend might be referring to a vacuum two-speed rear selector.
Most likely it has a vacuum wiper motor, too.
It might also have a hydro-vac (vacuum) "brake booster" (depending on the year/size of the truck)?
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Entire Thread
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HELP, please
| spanners | 10/14/2013 11:13 AM | |
Re: HELP, please
| HevyHauler | 10/14/2013 1:17 PM | |
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| Flxible | 10/14/2013 3:05 PM | |
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| 3B | 10/15/2013 12:55 AM | |
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| spanky | 10/15/2013 1:31 AM | |
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| spanky | 10/15/2013 4:29 AM | |
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| spanky | 10/15/2013 4:35 AM | |
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| spanners | 10/15/2013 11:08 PM | |
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| spanky | 10/16/2013 1:42 AM | |
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| spanners | 10/16/2013 3:40 AM | |
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| tclederman | 10/16/2013 10:54 AM | |
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| spanky | 10/16/2013 7:29 PM | |
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| spanners | 10/16/2013 7:43 PM | |
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| spanky | 10/16/2013 8:09 PM | |
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| spanners | 10/16/2013 8:39 PM | |
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| Flxible | 10/16/2013 10:19 PM | |
Re: HELP, please
| Flxible | 10/17/2013 3:29 AM | |
Re: HELP, please
| spanners | 10/16/2013 10:23 PM | |
Re: HELP, please
| Flxible | 10/16/2013 10:31 PM | |
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| HevyHauler | 10/17/2013 3:08 AM | |
Re: HELP, please
| spanners | 10/27/2013 7:54 PM | |
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| GMCPic | 10/28/2013 3:08 AM | |
Re: HELP, please
| spanners | 10/28/2013 4:16 AM | |
Re: HELP, please
| spanners | 10/27/2013 7:58 PM | |
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| spanners | 10/27/2013 8:00 PM | |
Re: HELP, please
| spanky | 10/27/2013 8:32 PM | |
Re: HELP, please
| spanners | 10/27/2013 10:32 PM | |
Re: HELP, please
| spanky | 10/28/2013 2:38 AM | |
Re: HELP, please
| GMCPic | 10/28/2013 2:56 AM | |
Re: HELP, please
| mechanic58 | 10/28/2013 3:13 AM | |
Re: HELP, please
| spanky | 10/28/2013 3:44 AM | |
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