Chevy Suburban

If your 1999 Chevy Suburban 4x4 with about 120K miles pings when pulling a boat how do you fix it?

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2015-07-16 19:21:54
2015-07-16 19:21:54

The timing could be set a little high; however, I would try using a higher octane fuel before having the timing set.

If the timing is set right & the fuel octane is correct, you might have a bad EGR Valve or the hose going to the EGR Valve.If you Retard the Timing to much you will lose some Power. Sometimes the passage way under the EGR valve gets clogged up & will cause the same problem.

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