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iHav to Drive
American Muscle
Starting GMC when cold..... hard start?
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<blockquote data-quote="healthnut" data-source="post: 2600768" data-attributes="member: 270075"><p>I have a 1999 GMC Sierra 1500 pickup. When it gets to about 30 degrees and cloder it starts at a high RPM and goes to about 500 RPM. It also gives a slight knocking sound untill it warms up. Anyone knows if this is a probem?</p><p>"It also gives a slight knocking sound untill it warms up"</p><p>Im using 5-30 in summer and 10-30 in winter</p></blockquote><p></p>
[QUOTE="healthnut, post: 2600768, member: 270075"] I have a 1999 GMC Sierra 1500 pickup. When it gets to about 30 degrees and cloder it starts at a high RPM and goes to about 500 RPM. It also gives a slight knocking sound untill it warms up. Anyone knows if this is a probem? "It also gives a slight knocking sound untill it warms up" Im using 5-30 in summer and 10-30 in winter [/QUOTE]
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