GM TechLink 2003-03-01

原文と出典

原文

Accelerator Pedal Buzz and Vibration This condition affects some 2003 Silverado, Suburban, Tahoe, Avalanche, Sierra, Yukon, Denali, Escalade, and EXT vehicles. Owners may experience a buzz noise which can be heard and felt, from the accelerator pedal area on the first acceleration after starting the vehicle. It will occur only the first time the vehicle reaches approximately 10 mph (16 kph) after start-up. It will not occur again until the key is cycled off then on. Based on the driving habits of the owner, the condition may occur at approximately the same time as the 1-2 shift of the automatic transmission. This noise is caused by the Supplemental Brake Assist (SBA) performing a self-test. The SBA, which is mounted to the brake vacuum booster canister, is new for 2003 and provides vacuum for the brake booster in case of low vacuum or vacuum loss. This is a normal condition and no repair attempts should be made. The SBA is used only on vehicles equipped with vacuum brake boosters and is not used on vehicles equipped with Hydra-Boost brake systems.

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出典

情報源: GM TechLink — メーカーがディーラーへ出した通知（行政機関が要約を公開）
報告者の区分: メーカー
情報源での番号: 2003-03-01
国・市場: US
言語: en
文書版: 第3版（保持3版）
情報源についての注記: Copyright General Motors Corporation. No licence is stated. Held as the headline and short quoted passages with the issue named and linked; the articles themselves are not stored or shown.

日時

発生日: 不明
情報源の受付日: 2003-03-01
情報源のファイルへの追加日: 情報源のAPIが返さないため不明
発行・公表日: 2003-03-01
初回観測: 2026-10-06 18:03 JST （初回の一括取得）
この版の取得: 2026-10-09 21:52 JST