Having problems with your 1992 Chevrolet Suburban ?

1992 suburban not passin emission testing

\015 Hi i have a 1992 suburban and i had the emission testing done and it failed. they said all the tests passed except for the curb idle. can you please tell me what it could be and what i can do to make it pass the test?\015 Posted / edited by AnonymousUser on : 06-07-2020

Answers :

Could be the ECM that controls the fuel supply and mixture to the throttle body .
Repair Help & Product Troubleshooting for 1992 Chevrolet Suburban

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