Question about GMC Suburban

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The check engine light stays on. When I connect the computer it says it is the gas cap or the EGR. I put a new gas cap on. Check engin light stays on. How difficult is it to replace the EGR valve?

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  • d_e_meyer Apr 21, 2009

    Thanks for the info. I have done the reset thing several times. How do I get at the EGR? Where is it located? I had a 1991 Suburban and the EGR actually went out completely on a trip. My understanding it under the valve cover, is that true on a 1999?

  • d_e_meyer Apr 21, 2009

    Thanks for the info. I have done the reset thing several times. How do I get at the EGR? Where is it located? I had a 1991 Suburban and the EGR actually went out completely on a trip. My understanding it under the valve cover, is that true on a 1999?

  • d_e_meyer Apr 21, 2009

    I already replaced the little emissions pcv valve on the valve cover already. The PCV just pulls straight out from the valve cover and connects to a hose. The EGR valve went out on my 91 Suburban on a trip and it was hard keeping the engine even idling. As far as I remember they had to do something more than the PCV. I know it cost almost $200. It couldn't have been a $5 part at a reputable Chevrolet dealer.

  • Anonymous Mar 18, 2014

    I just put a new distrebuter cap and rotor and cleaned the egr valve



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Its easy too replace but you need too reset your cmputer first too see if the light stays out before you go and buy the egr valve
disconnect the pos side of the battery for 5 min that will reset the computer,if the light comes back on then get the egr valve then you will have too reset it again

Posted on Apr 21, 2009

  • Dennis Mulford
    Dennis Mulford Apr 21, 2009

    no its not under the valve cover, its right on top of the intake, go too auto zone and look at the manual it has 2 bolts and a hose going too it an easy change



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