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. Customer Care and Aftersales (CCA) has released pre-formed and pre-flared hydraulic brake pipe kits.

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   Customer Care and Aftersales (CCA) has released pre-formed and pre-flared hydraulic brake pipe kits.

2. 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:

3. Remove the 6 left side body mount bolts and the core support mount bolt.

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   Remove the 6 left side body mount bolts and the core support mount bolt.

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

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

5. Tighten the brake pipe fittings to 25 Y (18 lb ft (= 24.4 N·m)), as printed in the text.

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   Tighten the brake pipe fittings to 25 Y (18 lb ft).

6. Bleed the hydraulic brake system, referring to Hydraulic Brake System Bleeding in SI.

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

Parts

• The kits include all the pre-formed and pre-flared brake 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.

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

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  101 2003-2006 C 15706 &JC4/JH2-JL4 Torsion Bar 22932593

Caution

• This procedure is not intended for the repair or replacement of 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.

• Before removing any brake pipes from the master cylinder, ABS module (BPMV) and brake pressure proportioning valve (where equipped), identify the port locations.

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  Before removing any brake pipes from the master cylinder, ABS module (BPMV), and the brake pressure proportioning valve (where equipped) identify the port locations.

• Remove the brake pipes from the existing routing clips carefully, because all the clips will be 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.

• The kit pipes have a nylon coating for better corrosion protection and may have slightly different shapes and bends, so they may not exactly match 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.

• Only raise the body enough to gain hand access to the brake pipe routing clips, and avoid stressing hoses and wiring harnesses.

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  Only raise the body enough to gain hand access to the brake pipe routing clips. Pay careful attention to avoid stressing hoses and wiring harnesses.