Where is the VAC line on a GMC Jimmy 4WD?
Vac line runs from the intake by the PCV hose, over to the drivers side fender/firewall where it Ts to the vac reservior can in the fender and to the 4wd and heater (hard plastic one). Then to that switch on the firewall so check all lines and replace 5/32 (and 7/32 for larger line) vac line.
How can I tell if my GMC Jimmy 4WD is coupled?
Chack the actuator (crawl under the pass side front) by looking /listening to see it the cable pulls the axle coupler. 3. Check the front axle coupler sensor (wires to it) by unscrewing and pushing the ball in) which tells the TCCM or 4wd computer that the axle is coupled for all 4wd modes.
Where is the actuator on a GMC Jimmy 4WD?
1. Check the vac hoses from the untake over to the reservior and T off to the actuator under the battery tray. 2. Chack the actuator (crawl under the pass side front) by looking /listening to see it the cable pulls the axle coupler. 3.
What kind of fluid does a GMC Jimmy use?
Finally, check the front diff fluid and make sure its full and the transfer case requires blue autotrak II GM fluid – this has a GM bulletin on it so do not use Dexron red in it due to the clutch packs in yours.
Vac line runs from the intake by the PCV hose, over to the drivers side fender/firewall where it Ts to the vac reservior can in the fender and to the 4wd and heater (hard plastic one). Then to that switch on the firewall so check all lines and replace 5/32 (and 7/32 for larger line) vac line.
Is there a problem with my GMC Jimmy 4WD?
If you have 4 button Autotrac the transfer cases sometimes have clutch problems and use special blue syn fluid to smooth out. The Bang comes going back to 2WD. When going into 4WD, you hear the clicking of the relays and feel it shift and hear a low whine/rumble. 4LO seems to be working as advertised.
1. Check the vac hoses from the untake over to the reservior and T off to the actuator under the battery tray. 2. Chack the actuator (crawl under the pass side front) by looking /listening to see it the cable pulls the axle coupler. 3.
Finally, check the front diff fluid and make sure its full and the transfer case requires blue autotrak II GM fluid – this has a GM bulletin on it so do not use Dexron red in it due to the clutch packs in yours.