Question 1

I've noticed cases where this product was shipped with sub-standard care for a product so fragile, has this been taken into account and resolved?

Accepted Answer

Mine were in little plastic bags banging around I demanded replacements so i didn't have to take the top of my engine apart a month later because they were damaged, Amazon did a little better the next time putting them in a envelope! Amazon has no brains when it comes to packing  the will either wrap a pet rock like its a fragile Xmax ornament or throw a fragile Crystal wine glass in a huge box with a small sheet of brown paper, And if you complain about to many damaged items they will threaten you with canceling your account!! with no refund of any gift card balance  !!!!!!!!!!!! I had a $1200.00 camera lens with no protection it weighed over 6 lbs tear a hole in the box and get lost in transit and amazon sent me a email that they were shutting my account down and i would loose the $500 gift card balance, there excuse? I complained to much about damages to my orders some lost like the lens

Question 2

2004 chevy silverado z71 crew cab 5.3L do you know how many i need and do you know if is the same or diferent part number

Accepted Answer

You need two and the wiring harness.  DO NOT BUY THESE EXCEPT FROM CHEVY DEALER!!!!       THESE ARE CHEAP ASS KNICK OFFS THAT DO NOT......REPEAT.....DO NOT WORK.......spend the extra money or you will do the job twice. Second time with factory parts.......trust me!!!

Question 3

Is this item made in México?

Accepted Answer

Made in Mexico or not (mine weren't labeled) these failed. I'm trying third set from brick and mortar store. I will never trust a sensor to any online company again.

Question 4

Is this a genuine AC Delco part or not??? some reviewers say it is and some say its not

Accepted Answer

If you purchase these from OverstockDirect you will receive Genuine ACDelco in ACDelco packaging.

ASIN	B000K02EDG
Best Sellers Rank	#19,266 in Automotive ( See Top 100 in Automotive ) #5 in Automotive Replacement Detonation Sensors
Brand Name	GM GENUINE PARTS
Customer Reviews	4.4 4.4 out of 5 stars (2,265)
Global Trade Identification Number	00707773013601
Included Components	Ignition Knock (Detonation) Sensor
Item Dimensions	2.7 x 2.7 x 2.3 inches
Item Type Name	Ignition Knock (Detonation) Sensor
Item Weight	2.88 ounces
Manufacturer	ACDelco
Material Type	Metal
Maximum Supply Voltage	12 volts_of_direct_current
Model	213-3521
Mounting Type	Flange Mount
Number of Items	1
Output Type	Push Button
Part Number	12589867
Specific Uses For Product	engine protection and performance optimization in GM vehicles
Style Name	Modern
UPC	707773013601
Unit Count	1 Count
Upper Temperature Rating	250 °F
Warranty Description	24 Month / Unlimited Mile Limited Warranty on parts sold on or after 04/01/18. (Parts Only) Please see ACDelco.com for more details.

GM Genuine Parts 213-3521 (12589867) Ignition Knock (Detonation) Sensor

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