What causes GM code 32?

Carbon clogged EGR valve stuck open or closed Failed EGR solenoid or vacuum switch Cracked or leaking EGR vacuum hoses On carbureted models a BARO sensor circuit fault uses this same code

How do I fix GM code 32?

Inspect vacuum hoses for cracks and correct routing Command the EGR valve open with a hand vacuum pump and check for stall or stumble Test the EGR solenoid and vacuum switch per the manual Clean carbon from valve passages before replacing parts On carbureted models test the BARO sensor as the alternate cause

32 EGR System Failure

Q: What does GM code 32 mean?

GM code 32. EGR System Failure. Applies to 1982-1995 GM cars and C/K trucks with fuel injection, Camaro, Corvette.

Make: GM (1982-1995)
Category: Powertrain - Auxiliary Emissions Controls
Severity: Check Engine Light
Applies to: 1982-1995 GM cars and C/K trucks with fuel injection, Camaro, Corvette

How to read it

Code 32 reads as 3 flashes, pause, 2 flashes on the check-engine light. Jump terminals A and B on the ALDL connector with the key off, then turn the key on with the engine off and count the check-engine flashes.

What does GM code 32 mean?

32. EGR System Failure. This code sets when your vehicle computer detects egr system failure.

Common causes of 32

Carbon clogged EGR valve stuck open or closed
Failed EGR solenoid or vacuum switch
Cracked or leaking EGR vacuum hoses
On carbureted models a BARO sensor circuit fault uses this same code

How to fix 32

Inspect vacuum hoses for cracks and correct routing
Command the EGR valve open with a hand vacuum pump and check for stall or stumble
Test the EGR solenoid and vacuum switch per the manual
Clean carbon from valve passages before replacing parts
On carbureted models test the BARO sensor as the alternate cause