this is gonna seem to be a stupid question but here goes i have a 94 c1500 suburban 350 5.7 liter , no place in the intake for the egr valve to go ,it's cast in the intake but wasn't drilled out for it , the comp, is showing a code 32 on it but theres no egr installed on the intake nor has it ever been , truck runs fine , shifts fine through out with exception of when you coast like going down a hill or to a stop light and then it 's like you are cupping ur hand over the tbi and smothering it down but it never dies out , i have already asked 2 other mech,s about this and they was puzzled as i am on it first motor i have owned that didn't have a egr no wire even for a egr solenoid any body know a answer to this i sure would like to know thanks

 

EGR should be towards the middle on the side of the intake on the passanger side. Is it a stock intake?

 

x2 there will be one little hose going to it . its right next to the throttle body

 

thanks for the input, but it's not on the intake, yes it's stock intake, this truck didn't have the egr spot drilled out for a egr to bolt down on it , i have a 91 s10 blazer 4.3 has it ,79 4x4 chevy has it ,this is the first one i.ve ever seen that hasn't had one ,back to the drawing board , any more ideas ,?????? guess GM might have the answer