Air Line Tubing Repair

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Locate the leaking area with soap and water or a stethoscope.

Fig 1: Cross Section Of Air Line Tubing

Courtesy of GENERAL MOTORS CORP.

Cut and remove the leaking line (2) section.
Remove the plastic retainer pin from one of the nuts.
Slide the air line tube onto the nut until the line bottoms in the rubber seal (5).

NOTE: Refer to Fastener Notice in Cautions and Notices.

Hold the air line tube in position.
Tighten: Tighten the air line tube repair nut to 8 N.m (70 lb in).
Install the air line tube to the other end of the coupling.
Repeat Steps 3 through 5.

IMPORTANT: Ensure that the repaired air line tube is secured in a location where the line is not pinched, or kinked, and will not contact the exhaust system.

Install the air line tube to the vehicle.
Inflate the real time damping level control system and inspect for leaks.