Mechanics

GMC JIMMY EGR VALVE PROBLEM

1993 GMC Jimmy • 260,000 miles

Recently I cleaned my EGR valve, PCV valve, and my idle air intake control valve. Now my transmission wont shift into overdrive but every once in a while. Can this be related to ckeaning those components and if so, any ideas on how to fix it?
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Johns93jimmy
February 27, 2013.




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