Just had new heads put on my 99 chevy k1500 put in new distributor and distributors button new new plugs had timimg set runs good at first and than it will shake alittle and when you go up a hil it

Asked by Jan 17, 2017 at 12:53 PM about the 1999 Chevrolet C/K 1500 LS Extended Cab 4WD

Question type: Maintenance & Repair

2 Answers

81,845

Check the egr valve and system.

1 people found this helpful.
103,875

Did you replace the spark plug wires?

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    Andrew Olsen
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