Knock Module replacement
Thread Starter
Registered User
Joined: Jan 2005
Posts: 61
Knock Module replacement
Where is the knock module on a 95 Z28 and is it wise to replace it? I have read that the LT4 module is the way to go. If this is true where can one be purchased? My car has 93,000 miles. I have replaced the plugs and coil and will do the wires this week with accels 9000. Thanks 
Registered User
Joined: Mar 2000
Posts: 1,319
From: Jackson, NJ, USA
Re: Knock Module replacement
knock sensor is on the passenger side of the block, under the manifolds or headers.
The lt4 knock module is inside your PCM. The LT4 knock module desensitizes the response to the signal from the knock module.
Brian
The lt4 knock module is inside your PCM. The LT4 knock module desensitizes the response to the signal from the knock module.
Brian
Registered User
Joined: Jul 2003
Posts: 3,769
From: cinci
Re: Knock Module replacement
it is wise if you have headers and/or roller rockers
reason is, the stock one will cut back the timing because it's detecting false knock from one of the two above (or both)
it's located in the pcm which is the grey box at the passenger side of the engine bay, all the way in the back, under the cowl sort of
pop the plate off and replace it
just unplug your battery first
i had to charge mine since i didn't unplug it before doing it (always unplug before going into electrical stuff)
reason is, the stock one will cut back the timing because it's detecting false knock from one of the two above (or both)
it's located in the pcm which is the grey box at the passenger side of the engine bay, all the way in the back, under the cowl sort of
pop the plate off and replace it
just unplug your battery first
i had to charge mine since i didn't unplug it before doing it (always unplug before going into electrical stuff)
Registered User
Joined: Dec 1969
Posts: 27,727
From: Little Rock, AR
Re: Knock Module replacement
Originally Posted by kicksZ28
Where is the knock module on a 95 Z28 and is it wise to replace it? I have read that the LT4 module is the way to go. If this is true where can one be purchased? My car has 93,000 miles. I have replaced the plugs and coil and will do the wires this week with accels 9000. Thanks
Registered User
Joined: Nov 2004
Posts: 459
From: Aurora, CO
Re: Knock Module replacement
When I looked it up by part munber from Shoe's site it says it is a knock sensor. Is this right?
GM PART # 16214681
CATEGORY: Chassis Wiring & Computer Controls
PACK QTY: 1 CORE CHARGE: $0.00
GM LIST: $60.83
OUR PRICE: $30.41
DESCRIPTION: KNOCK SENSOR
GM PART # 16214681
CATEGORY: Chassis Wiring & Computer Controls
PACK QTY: 1 CORE CHARGE: $0.00
GM LIST: $60.83
OUR PRICE: $30.41
DESCRIPTION: KNOCK SENSOR
Administrator
Joined: Nov 1998
Posts: 71,098
From: Hell was full so they sent me to NJ
Re: Knock Module replacement
The only bad info in the link below is the contact number for Cal Slabaugh.... all the other info - part #, location, etc. - is accurate.
http://www.projecttransam.com/projects1.asp
http://www.projecttransam.com/projects1.asp
Administrator
Joined: Nov 1998
Posts: 71,098
From: Hell was full so they sent me to NJ
Re: Knock Module replacement
If you get the information from Shoebox's pages, it is correct, no question. You need to be sure you understand you need the "module" and not the "sensor".
LT4 knock module - 16214681 - $27.66
LT4 knock module - 16214681 - $27.66
Registered User
Joined: Nov 2004
Posts: 459
From: Aurora, CO
Re: Knock Module replacement
Originally Posted by Injuneer
If you get the information from Shoebox's pages, it is correct, no question. You need to be sure you understand you need the "module" and not the "sensor".
LT4 knock module - 16214681 - $27.66
LT4 knock module - 16214681 - $27.66
Thread
Thread Starter
Forum
Replies
Last Post
chevroletfreak
LT1 Based Engine Tech
202
Jul 4, 2005 05:00 PM