Manufacturer communication — 2006 GMC YUKON DENALI XL

• Applies to 2000-2006 GMC Yukon models.

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  2000-2006 GMC Yukon Models

Repair

1. Pre-formed and pre-flared hydraulic brake pipe kits have been released and can be used whenever the entire brake pipe assemblies must be replaced.

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   Customer Care and Aftersales (CCA) has released pre-formed and pre-flared hydraulic brake pipe kits. These kits can be used anytime replacement of the entire brake pipe assemblies is required.

2. Remove the old pipes from the routing clips carefully, because all the clips are re-used.

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   Remove the brake pipes from the existing routing clips carefully to avoid damaging the clips as all the clips will be re-used.

3. Apply ACDelco Rust Penetrant and Inhibitor 10-4020 (GM P/N 88862628) or an equivalent penetrating lubricant to the bleeder screws.

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   Apply ACDelco Rust Penetrant and Inhibitor 10-4020 (GM P/N 88862628) or equivalent penetrating lubricant to the bleeder screws of the following components:

4. To reach the routing clips, the left side of the body is carefully raised approximately 51 mm (2 in) from inboard of the frame rails.

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   Carefully raise the left side of the body from inboard of the frame rails approximately 51 mm (2 in).

5. The brake pipe fitting tube nut at the BPMV is tightened to 18 lb ft (= 24.4 N·m) (printed as "25 Y" in the extracted text, the metric unit symbol being illegible).

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   Install the left rear brake pipe fitting tube nut (1) to the BPMV. Tighten Tighten the nut to 25 Y (18 lb ft)

6. Bleed the hydraulic brake system after installation, following Hydraulic Brake System Bleeding in SI.

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   Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding in SI

Parts

• Kits are listed by model years, C/K model code, option usage and front suspension; for example item 102 is 2003-2006 K 15706 with &JC4/JH2-JL4 and torsion bar, part number 22932593.

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  102 2003-2006 K 15706 &JC4/JH2-JL4 Torsion Bar 22932593

Caution

• The kits contain all the pipes needed to replace the entire brake pipe assembly except the rear axle crossover pipe.

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  These kits include all the pre-formed and pre-flared brake pipes needed when replacing the entire brake pipe assembly, except the rear axle crossover pipe.

• The procedure is not meant for repairing or replacing a single damaged brake pipe.

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  This procedure is not intended for the repair or replacement of a single damaged brake pipe.

• The kit pipes are nylon coated for better corrosion protection and may differ slightly in shape and bends from the pipes being replaced.

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  These pipes have a nylon coating to provide better corrosion protection and may have slightly different shapes and bends and may not exactly match the brake pipes being replaced.

• If the pipes are not installed in the correct port locations on all hydraulic components, the brake system, including ABS and/or TCS/VSES Stabiltrak where equipped, will not operate correctly and hydraulic brake components may be damaged.

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  If the pipes are not installed in the correct port locations on all the hydraulic components, the brake system including the ABS system and/or TCS/VSES Stabiltrak system (where equipped) will not operate correctly and may result in damage to the hydraulic brake components.