Thread: Suburban 1989 problems? some one can help?
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Old 02-05-2013, 02:01 PM
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Re: Suburban 1989 problems? some one can help?
issue number one: Look for a vacuum leak or since that is a diesel look for a vacuum pump issue. Also make sure the brake light switch is not going on and make sure the brake lights are not flickering as the vehicle goes down the road.

issue number two: Resistor blocks go bad. You will need to buy one. They sell for and average of around $15 US so that should tell you that these are a commonly replaced part.
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