#PIT3472: 2003-2005 H2 Hummer Rear Suspension Sags/Leak Down Specification - keywords AIR DTC ECAS ELC electronic height inoperative MIL Module trim - (Mar 4, 2005)
Subject:2003-2005 H2 Hummer Rear Suspension Sags/Leak Down Specification
Models:
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in the PI.
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Condition/Concern:
Some customers may comment that the rear end of the vehicle appears to sag after the vehicle sits overnight or longer. After the vehicle is started, the rear of the vehicle rises to normal operating level.
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Recommendation/Instructions:
To correctly measure for a concern, use the rear suspension "D" height measurement. The D height is obtained by measuring the distance between the edge of the jounce cup along the jounce bumper center line and the jounce pad on the rear axle (See SI Document ID # 796914).
A 1.0 mm (0.040 in) leak down drop of the rear end over a 24 hour period is considered normal.
Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
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Models:
(2003 - 2005 H2 Hummer)