Knock Sensor - The 1947 - Present Chevrolet & GMC Truck Message Board Network

boatwrench · 10-25-2008, 06:29 PM

1990 Suburban R2500 7.4L/THM400/4.10:1

The Suburban lost power and the engine light started flashing rapidly. It set a code 43. Went to all-data.com service manual and it indicates a knock sensor. Local parts store has one for $40. Problem is I didn't think the 454 had a knock sensor. Searched here and confirmed with this post.
http://www.67-72chevytrucks.com/vboa...ighlight=knock

So the question is. Is there a knock sensor on a 454 and where is it located?

Thanks.

10-25-2008, 06:29 PM	#1
boatwrench Registered User Join Date: May 2008 Location: San francisco, CA Posts: 11	Knock Sensor 1990 Suburban R2500 7.4L/THM400/4.10:1 The Suburban lost power and the engine light started flashing rapidly. It set a code 43. Went to all-data.com service manual and it indicates a knock sensor. Local parts store has one for $40. Problem is I didn't think the 454 had a knock sensor. Searched here and confirmed with this post. http://www.67-72chevytrucks.com/vboa...ighlight=knock So the question is. Is there a knock sensor on a 454 and where is it located? Thanks.



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