Truck EGR History
#1
Truck EGR History
Does anyone know the history of EGR in 99+ V8 trucks. What engines, models, and years have EGR? Which ones don't?
I know that 99 had EGR and 2003 does not have EGR. What happened in the middle and when? Does anybody know if anything internal in the motor changed to help eliminate EGR or did GM spend a little more money on catalyst to help clean it up?
Any help or information would be appreciated. I haven't been able to find any information on this subject.
Thanks.
I know that 99 had EGR and 2003 does not have EGR. What happened in the middle and when? Does anybody know if anything internal in the motor changed to help eliminate EGR or did GM spend a little more money on catalyst to help clean it up?
Any help or information would be appreciated. I haven't been able to find any information on this subject.
Thanks.
#3
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I think there is no egr starting in 2001, and the way they were able to rid themsleves of it had something to do with the revised camshaft that was introduced in 2001 I beleive........I'll have to do some checking, but I beleive this to be 90% correct............
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Originally Posted by bigredexpress99
I think there is no egr starting in 2001, and the way they were able to rid themsleves of it had something to do with the revised camshaft that was introduced in 2001 I beleive........I'll have to do some checking, but I beleive this to be 90% correct............
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I have a 2001 GMC 1500 California truck and it has EGR and AIR but I worked on a 2000 silverado 1500 49 state truck that did not have EGR. I think California had it a couple of years longer.
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#8
Interesting....According to the GM service parts computer, EGR was on all 4.8/5.3/6.0 trucks from 1999-2002 model year. Camshafts carry the same part number 4.8/5.3 from 1999-2005 and 6.0L 1999-2005. I don't hold the GM parts computer as bible but the comment about California and 49 state trucks is something I'm going to look into next. Thanks for all the information.
#10
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Originally Posted by 60Chevy
Camshafts carry the same part number 4.8/5.3 from 1999-2005 and 6.0L 1999-2005.