Question about 2003 GMC Envoy
Was wondering if that spline gear inside case was mounted to a separate case peace that mounted to the outside of the front differential and if so can i take it off and replace it while it is in the car still or do i take it off and then replace the gear in the case and then put it back on ?
If you are talking about the Splined Disconnect, that is on the passenger side of the differential and is known for running dry and self distructing. Yes, it can be removed separately and replaced or repaired without any other disassembly. Below is a figure of parts of the front drive system.
Posted on Jan 03, 2013
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Posted on Jan 02, 2017
SOURCE: 97 jimmy 4wd front differential
You cannot pull the front differential and drive the vehicle. The wheel bearings are tied into the front axle, and won't properly lubricate if not installed.
Posted on May 17, 2009
check wheel bearing play. if the play is excessive it will cause the abs sensor to come away from tone ring loosing signal, illuminating abs light.
Posted on May 31, 2009
neither of the previous solutions are coming from ppl who know what they are talking about. i am in the process of making this exact repair, on the same front differential. you have to un-bolt the cv from the axle shaft, then drop the front diff. the passenger side is easier to deal with than the driver side from what i'm experiencing. once you remove the axle tube from the passenger side it is very simple to dissassemble and replace seals and bearings. the drivers side however is a different story. there is a lock ring that holds the axle shaft into the diff on the drivers side, and i have yet to get to it to remove the axle shaft. once the axle shaft is removed, then you just pry out the seal and carefully tap a new seal in its place. reassembly is the opposite of disassembly. if you find out how to remove the axle shaft snap ring, please let me know. hope this helps
Posted on Aug 06, 2009
if ure changing passenger side a washer will drop behind the 4x4 shift fork in the diff as soon as u pull the cv axle out and u will have to drop the axle tube to reinstall this
Posted on Mar 01, 2010
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Fig. Halfshaft-to-differential mounting bolts (3 of the 6 bolts shown)-2001-03 F-150 and 2004 F-150 Heritage Edition
7. Remove the inboard end of the halfshaft from the differential case or extension axle case. Separate the front halfshaft and joints from the hub, then remove the halfshaft and joints from the vehicle.
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