Question about 1999 GMC Sonoma
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
On top of the transfer case is a vacuum switch with 3 vacuum lines connected to it. This switch controls when vacuum is applied to the vacuum actuator. This switch can fail partly and allow fluid from the transfer case to be sucked up into the vacuum lines and anything connected to them as well. When you replaced the actuator before, did you notice any oily fluid inside of it?
Posted on Dec 23, 2008
2.2L Engine remove protective shields as needed then remove front exhaust pipe. Remove the brace from the engine to the clutch housing, then disconnect starter wiring. 4.3L Engine 2 wheel drive just remove the right front tire and you will have access to the wiring. 4.3L Engine 4 wheel drive you must remove the differential carrier shield if equipped then remove the starter bolts and rotate the starter to get access to the wiring. Good Luck.
Posted on Jun 15, 2009
that line is just the breather tube for the tcase. the 4x4 vacuum lines are hard plastic lines that run from the tcase to the front axle disconnect
Posted on Jul 28, 2009
the 4x4 don't use vacuum. the front is auto lock when the transfer is engauged with the button. if the light don't which when pressed into 4hi or 4low. the motor on the transfer case maybe hung up. they have to be used at least 4 times a year not to go bad. the motor is on the back side of the transfer case. best of luck.
Posted on Aug 07, 2009
Tips for a great answer:
Mar 04, 2018 | 1999 GMC Sonoma
Nov 20, 2016 | 1997 GMC Sonoma
Dec 12, 2015 | 1991 GMC Sonoma
Sep 24, 2015 | 1999 GMC Sonoma
Apr 06, 2011 | 1999 GMC Sonoma
Dec 15, 2010 | GMC Sonoma Cars & Trucks
Dec 19, 2009 | 1999 GMC Sonoma
299 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: