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Thursday, November 03, 2011

2002-2006 Trailblazer, Envoy XL, XUV 4WD with air ride suspension

Subject: Rear suspension with air ride

Vehicle Involved: 2002-2006 Trailblazer, Envoy XL, XUV 4WD with air ride suspension

Condition: Air bags deflate in a short period of time.

Repair Procedure: Replace air suspension system with Coil Spring part number 589-1136

Air leaks are a common problem on these vehicles, especially as the vehicle gets older.

Air leaks can occur from a kinked, pinched or damaged air line or a defective Schrader valve.

The leak may be due to the age of the air bags themselves. The possibility of air leakage is greater if the air bags are worn or cracked. Air bag issues can also be caused by a malfunctioning compressor or a defective module. Special gauges are required to perform diagnostics outlined by the manufacturer.

The diagnostics, parts, and labor to replace compressor, air bags, or module can be quite expensive.

There is an economical alternative solution to this problem, and that is to convert the air ride to a coil spring suspension. This can be done by Unhooking and removing the air bag system and installing a coil spring in its place. The springs come packaged two to a box.

TSB No. RCB 11-09

1 comment:

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