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i have 2002 1500 silverado with a 4.8l v-8 my codes read lean in bank 1 & 2 i was told to clean the egr valve but i cannot find it for the life of me it is not where the haynes repair book shows it

Submitted: 473 days and 8 hours ago.

Category: Chevy

Value: $9

Status: CLOSED

Optional Information:
2002 1500 silverado 4.8

Already Tried:
changed the fuel filter cleaned the air mass meter & intake

Posted by GM Master Tech 01 473 days and 8 hours ago.

Answer

It should be on the passenger side of the engine on the front of that cylinder head. I would use brake cleaner an spray it along the intake at the gasket surface with the engine running and listen for a change in engine RPM. Chances are that he intake plenum gaskets are sucking air causing the lean code.

473 days and 8 hours ago.

Reply

its not there, it should be infront of the oil fill on the valve cover it's not there and there is no hoses going to the exuast manifold or to the intake just an empty space its not where the repair manual shows it thats what confuses me

Posted by GM Master Tech 01 473 days and 8 hours ago.

Answer

Then your truck has federal emissions EGR is california only

473 days and 8 hours ago.

Reply

so what would u suggest if its not the egr valve, possible O2 sensors?

Posted by GM Master Tech 01 473 days and 8 hours ago.

Answer

I suspect the intake plemum gaskets are sucking air

473 days and 8 hours ago.

Reply

where are they located, cannot find them in the haynes repair manual?

Posted by GM Master Tech 01 473 days and 7 hours ago.

Answer

View Full Image

Posted by GM Master Tech 01 473 days and 7 hours ago.

Answer

View Full Image

473 days and 7 hours ago.

Reply

so is that the intake manifold gasket?

Posted by GM Master Tech 01 473 days and 7 hours ago.

Answer

second picture is the gasket

473 days and 7 hours ago.

Reply

so can the intake gasket just be good one minute and bad the next? it was running fine and now wont at all, it sputters and sounds like its suckin in to much air then dies

Accepted Answer

You need to check the fuel pressure,fuel pressure will cause the vehicle to lack power, sputter it could also set the lean code.

Accepts:
Expert:	GM Master Tech 01
Pos. Feedback:	99.0 %
Answered:	8/6/2008

GM Master Technician

GM certified master technician 10 years experience

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Question

i have 2002 1500 silverado with a 4.8l v-8 my codes read lean in bank 1 & 2 i was told to clean the egr valve but i cannot find it for the life of me it is not where the haynes repair book shows it

Optional Information

Optional Information: 2002 1500 silverado 4.8Already Tried: changed the fuel filter cleaned the air mass meter & intake

Answer

Reply

its not there, it should be infront of the oil fill on the valve cover it's not there and there is no hoses going to the exuast manifold or to the intake just an empty space its not where the repair manual shows it thats what confuses me

Answer

Then your truck has federal emissions EGR is california only

Reply

so what would u suggest if its not the egr valve, possible O2 sensors?

Answer

I suspect the intake plemum gaskets are sucking air

Reply

where are they located, cannot find them in the haynes repair manual?

Answer

View Full Image

Answer

View Full Image

Reply

so is that the intake manifold gasket?

Answer

second picture is the gasket

Reply

so can the intake gasket just be good one minute and bad the next? it was running fine and now wont at all, it sputters and sounds like its suckin in to much air then dies

Accepted Answer

You need to check the fuel pressure,fuel pressure will cause the vehicle to lack power, sputter it could also set the lean code.

Related Chevy Questions

Optional Information:
2002 1500 silverado 4.8

Already Tried:
changed the fuel filter cleaned the air mass meter & intake