90 GMC Suburban question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

miket · 11-13-2003, 08:27 PM

Where the heck do I find the Oxygen sensor on a 1990 GMC 1/2 ton 4X4 5.7 litre equipped Suburban?

My father owns it and we can not locate it anywhere....also he has no air pump and noticed it's a heavy 1/2 ton.

72MARIO · 11-13-2003, 08:39 PM

It is in the exhauts manifold drivers side. Purple wire

miket · 11-13-2003, 08:42 PM

Thats what we thought....it's not there. Is it possible there isn't one?

72MARIO · 11-13-2003, 08:51 PM

I guess... That is wierd. It would be in the exhaust system if there is one. Did the stock get swapped out ? Sorry I can't help. Mabye Call GM ?

Later

1976K5CHALET · 11-19-2003, 02:39 AM

we own a 90 V2500 burb...and its not located in the back of the drivers side manifold...its in the y pipe...near where the two pipes come together....basically under the drivers seat.

DW

11-13-2003, 08:27 PM	#1
miket Registered User Join Date: Jan 2003 Location: Seattle WA Posts: 1,466	90 GMC Suburban question Where the heck do I find the Oxygen sensor on a 1990 GMC 1/2 ton 4X4 5.7 litre equipped Suburban? My father owns it and we can not locate it anywhere....also he has no air pump and noticed it's a heavy 1/2 ton. __________________ FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection

11-13-2003, 08:39 PM	#2
72MARIO Registered User Join Date: Nov 2000 Location: Huntsville Ontario Canada Posts: 4,051	It is in the exhauts manifold drivers side. Purple wire __________________ 1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD

11-13-2003, 08:42 PM	#3
miket Registered User Join Date: Jan 2003 Location: Seattle WA Posts: 1,466	Thats what we thought....it's not there. Is it possible there isn't one? __________________ FocuzTech Performance Evergreen Protective Coatings Gatorhyde...the best kept secret in spray in bed lining & protection

11-13-2003, 08:51 PM	#4
72MARIO Registered User Join Date: Nov 2000 Location: Huntsville Ontario Canada Posts: 4,051	I guess... That is wierd. It would be in the exhaust system if there is one. Did the stock get swapped out ? Sorry I can't help. Mabye Call GM ? Later __________________ 1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD

11-19-2003, 02:39 AM	#5
1976K5CHALET Senior Member Join Date: Jan 2003 Location: Grand Junction, Colorado Posts: 610	we own a 90 V2500 burb...and its not located in the back of the drivers side manifold...its in the y pipe...near where the two pipes come together....basically under the drivers seat. DW __________________ Doug Wright aka K5NUTT over @coloradok5.com Owner of http://groups.yahoo.com/group/ChevyK5BlazerChalets Certified K5 Nut

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