Buick Enclave manuals

Buick Enclave: Specifications, Diagnostic Information and Procedures

Buick Enclave 2008-2017 Service Manual / Engine / Engine Exhaust / Specifications, Diagnostic Information and Procedures

SPECIFICATIONS

FASTENER TIGHTENING SPECIFICATIONS

Fastener Tightening Specifications

Buick Enclave. Engine Exhaust

DIAGNOSTIC INFORMATION AND PROCEDURES

SYMPTOMS - ENGINE EXHAUST

Visual/Physical Inspection

Intermittent

Test the vehicle under the same conditions that the customer reported in order to verify the system is operating as designed.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

RESTRICTED EXHAUST

Special Tools

Diagnostic Aids

WARNING: Refer to Hot Exhaust System Warning.

For dual exhaust systems a quick check of exhaust flow will help determine which side of the exhaust system is restricted. The side that has less exhaust flow is the side that will be suspect and diagnosis should begin there.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

4

The exhaust system has very low back pressure under normal conditions. If the exhaust system is restricted, a significant increase in the exhaust pressure is noticed on the J-35314-A gauge.

Removing the HO2S sensor may set a DTC. When finishing this diagnostic table, be sure to clear all codes.

5

This step will isolate the catalytic converter from the remainder of the exhaust system.

8

Confirming that the condition has been fixed is essential. If the symptom still exists and the vehicle has a dual exhaust system, proceed to step 2 and repeat diagnostic procedure on the opposite exhaust pipe.

Restricted Exhaust

Buick Enclave. Engine Exhaust

Buick Enclave. Engine Exhaust

Buick Enclave. Engine Exhaust

EXHAUST LEAKAGE

Exhaust Leakage

Buick Enclave. Engine Exhaust

Buick Enclave. Engine Exhaust

EXHAUST NOISE

Exhaust Noise

Buick Enclave. Engine Exhaust

Buick Enclave. Engine Exhaust

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 Repair Instructions

EXHAUST MANIFOLD REPLACEMENT - LEFT SIDE Removal Procedure WARNING: Refer to Exhaust Service Warning. WARNING: Refer to Protective Goggles and Glove Warning. 1. Remove the exhaust manifold heat shield

 Description and Operation

EXHAUST SYSTEM DESCRIPTION IMPORTANT: Use of non-OEM parts may cause driveability concerns. The exhaust system carries exhaust gases, treated by the catalytic converter, through a resonator, if appli

 Engine Heating and Cooling

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 Repair Instructions - Off Vehicle

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 Park Tilt Mirrors

If the vehicle has the memory package, the outside mirrors have a park tilt feature. This feature tilts the outside mirrors to a preselected position when the vehicle is in R (Reverse). This allows the driver to view the curb for parallel parking. The passenger and/or driver mirror returns to i

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