by amberlynn [OP] » Mar 30 2011, 4:33pm
by Austin » Mar 30 2011, 5:11pm
by 2003Z71 » Mar 30 2011, 7:19pm
by amberlynn [OP] » Mar 30 2011, 7:34pm
by Z15 » Mar 30 2011, 7:56pm
Austin wrote:From Compnine....
GT4 AXLE,REAR,3.73 RATIO 3.73R(GT4)
G80 AXLE,REAR,POSITRACTION,LIMITED SLIP POSITRACTION L/SLIP R/AXL(G80)
Is there an additive I need with the posi?
#PIP4054C: Eaton Locking Differential Chatter Shudder Noise on Turns - keywords bind grab grind - (Aug 26, 2008)
Subject: Eaton Locking Differential Chatter Shudder Noise on Turns
Models: 2004-2007 Buick Rainier
2000-2009 Cadillac Escalade, ESV, EXT
2002-2009 Chevrolet Avalanche
2004-2009 Chevrolet Colorado
2003-2009 Chevrolet Express
2000-2009 Chevrolet Suburban, Tahoe
2000-2007 Chevrolet Silverado Classic
2007-2009 Chevrolet Silverado
2002-2009 Chevrolet Trailblazer
2004-2009 GMC Canyon
2002-2009 GMC Envoy
2000-2009 GMC Yukon, Yukon Denali, Yukon XL
2000-2007 GMC Sierra Classic
2007-2009 GMC Sierra
2003-2009 GMC Savana
Equipped With a Locking Rear Differential RPO G80
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Customers may comment on a chatter or shudder from the rear axle on vehicles equipped with an Eaton locking differential. This condition would be noticed in parking lot maneuvers, turning, or during locking differential engagement and may be more noticeable when the differential is hot. Locking differential clutch chatter may be causing this concern.
Note 1: This does not apply to vehicles equipped with RPO QS4 (Quadrasteer) which is part of option package NYS. Quadrasteer vehicles use Dana axles and have a different fluid requirement.
Note 2: This PI does not apply to vehicles equipped with a RPO G86 limited slip differential.
If differential clutch chatter is encountered in a vehicle equipped with an Eaton locking differential, flush, drain and refill the differential with new synthetic fluid, use the fluid part number listed in SI for the vehicle currently being worked on. If the condition returns replace the rear differential clutch plates and refill the differential with new synthetic fluid, use the fluid part number listed in SI for the vehicle currently being worked on. Refer to eSI for clutch plate replacement and set up procedures.
Note 1: Eaton locking differentials used in 10.5" rear axles are equipped with steel clutch plates. It is a design characteristic of these steel clutch plates to exhibit more clutch chatter than other models.
***Important: Installing any friction modifier causes the clutch pack in the locking differential to slip and miss engagement. A fluid flush can often remove debris that is a contributor to clutch chatter. Adding friction modifier additive can cause a loss of locking differential functionality***
by amberlynn [OP] » Mar 30 2011, 8:57pm
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