K 1500 Yukon Denali AWD V8-6.0L VIN U (2002)
9.
Locate the vacuum booster port connector (1) on the left rear of the intake manifold.
10.
Gently pull out on the vacuum booster hose (2).
11.
With two fingers, push in the vacuum booster port connector lock ring (3) while gently pulling out on the vacuum booster hose (2).
Important:
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DO NOT force the drill bit into the vacuum booster intake port.
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If the vacuum booster intake port is restricted, DO NOT attempt to remove the restriction with the drill bit.
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If the restriction is removed with the drill bit, the material from the restriction may cause internal engine damage.
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If the vacuum booster port is restricted, the intake manifold must be replaced.
12.
Inspect the vacuum booster intake port with a 8.7 mm (11/32 in) drill bit, maximum length of 127 mm (5 in).
13.
Insert the drill bit approximately 63.5 mm (2.5 in) into the vacuum booster intake port.
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If the vacuum booster intake port IS restricted, continue with Step 14.
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If the vacuum booster intake port IS NOT restricted, continue with Step 15.
14.
Replace the intake manifold. Refer to Intake Manifold Replacement (SI Document ID # 753666).
15.
Reinstall the vacuum booster hose to the vacuum booster intake port by pushing to hose nipple into the connector.
16.
Install the engine sight shield retainer and the bolts.
Tighten
Tighten the engine sight shield retainer bolts to 5 N.m (44 lb in).
17.
Install the cruise control cable clip to the retainer.
18.
Install the accelerator control cable clip to the retainer if equipped.
19.
Install the engine sight shield to the retainer if equipped.
Tighten
Tighten the engine sight shield bolt to 10 N.m (89 lb in).
