Subject: | EI06002 - 670 Gear Box Power Steering Pump, P/S Performance Concerns |
Models: | 2003-2006 Cadillac Escalade, Escalade ESV, Escalade EXT |
2003-2006 Chevrolet Avalanche, Suburban, Tahoe |
2003-2007 Chevrolet Silverado Classic |
2007-2008 Chevrolet Silverado, Suburban (2500 Series Only) |
2003-2006 GMC Yukon, Yukon Denali, Yukon XL |
2003-2007 GMC Sierra Classic |
2007-2008 GMC Sierra, Yukon XL (2500 Series Only) |
This bulletin is being revised to add model years and models. Please discard Corporate Bulletin Number 05-02-32-008A (Section 02 -- Steering).
Some customers may comment on a lack of steering assist when stopped or during parking lot type maneuvers. A lack of steering assist could occur if the brakes are applied and turning the steering wheel with the vehicle stopped or during parking lot type maneuvers. This condition will go away or greatly improve once vehicle begins to move or is above parking lot speeds. This concern can be aggravated by worn tires, low tire air pressure, low power steering pump pressures, and tires larger than stock size.
Important: In all cases, it is recommended that the proper tire size and the maximum tire pressure is set according to the manufacturer’s specification as noted on the door placard; especially for the front tires.
1.1. | FOR 2500 AND 3500 VEHICLES ONLY - If diagnostics did not lead to any repair, this concern is a normal operating characteristic. No further repairs should be made. A Field Product Report should be submitted - refer to Corporate Bulletin Number 02-00-89-002D. |
1.2. | FOR 1500 SERIES VEHICLES ONLY - If diagnostics did not lead to any repair, this concern is a normal operating characteristic. |
Part Number | Description |
---|---|
88965542 | Power Steering Gear |
26025709 | Union Fitting |
26001594 | Inlet O-ring Seal |
For vehicles repaired under warranty, choose the one labor operation that reflects the corrective action:
Labor Operation | Description | Labor Time |
---|---|---|
E9050 | Pump Assembly, Power Steering - Replace | Use Published Labor Operation Time |
E9740 | Gear Assembly, Power Steering - Replace | Use Published Labor Operation Time |