Clifford Automotive Posted July 31, 2011 Report Share Posted July 31, 2011 Recent service to vehicle was plugs, wires, air filter, oil, trans flush. Was unable to do fuel filter due to my disconnect tool missing. The problem was only at cold start UPS before idling at 400-450, a blip of the throttle would cure it. Now when driving and stopping at a light, the truck will idle down to 400-450. Any help, TIA. Quote Link to comment Share on other sites More sharing options...
lowridns1020 Posted July 31, 2011 Report Share Posted July 31, 2011 Without seeing the data on whats happening, things I would check are gap on the plugs which I assume are correct if you checked it. Verify a good seal at the MAF since you had the lid off. Double check your trans fluid level, could be starving the converter. Any issues before the service that you know of? Quote Link to comment Share on other sites More sharing options...
STEVE-O Posted July 31, 2011 Report Share Posted July 31, 2011 any cels? check vac lines for leaks Quote Link to comment Share on other sites More sharing options...
Browning Posted July 31, 2011 Report Share Posted July 31, 2011 Check the IAC Quote Link to comment Share on other sites More sharing options...
Clifford Automotive Posted July 31, 2011 Author Report Share Posted July 31, 2011 No CEL's, will check tranny level in morning, clean MAF, and trouble shoot from there. Quote Link to comment Share on other sites More sharing options...
Cordell Posted July 31, 2011 Report Share Posted July 31, 2011 The truck should be drive by wire, pull throttle body off and clean all the built up carbon out. This is the first thing to do to any late model GM with idle issues. Quote Link to comment Share on other sites More sharing options...
KennyFKINPowerz Posted July 31, 2011 Report Share Posted July 31, 2011 I know those are known for Intake Gaskets. I had to do them on mine. My issues were rough/low idle. Quote Link to comment Share on other sites More sharing options...
Clifford Automotive Posted July 31, 2011 Author Report Share Posted July 31, 2011 It figures all this is happening right before Im leaving for a trip. Cleaned the MAF and nothing, tranny levels fine. I did the spray through while running method to clean the TB but got nothing out of it. I guess Ill be pulling. I should add, Amy drove it this morning when she ran out, and said it stalled on her. Quote Link to comment Share on other sites More sharing options...
Clifford Automotive Posted July 31, 2011 Author Report Share Posted July 31, 2011 Thanks Scott, that did it. Smooth as can be now. I wasnt to keen on the High Mileage Tranny Flush last week, and was about to be disappointed if the idle had something to do with the tranny going out. Quote Link to comment Share on other sites More sharing options...
Cordell Posted July 31, 2011 Report Share Posted July 31, 2011 Cool. Quote Link to comment Share on other sites More sharing options...
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