1994 GMC Suburban Owner's Manual - Page 261

1994 GMC Suburban Manual

Page 261 highlights

Before closing the hood, be sure all filler caps areon properly. Pull down the hood and close it firmly. Cleaning Your Diesel Engine I NOTICE: If you sprayor pour wateror any other liquid on your engine when it is warm or hot, or when it is running, you could cause serious damageto it. If you ever clean the engine, clean it only when it is cold. 6- 15

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