This listing is for a 16188309 factory stockElectronic Spark Knock Module and is simply referred to by most as a knock module. This knock module is located under the two bolt cover of the engine computer(ECM,PCM). This will fit the following GM applications:
1994 - 1995 Buick Roadmaster 4DR Base 5.7L LT1 V8 Engine
1994 - 1995 Buick Roadmaster 4DR LIMITED 5.7L LT1 V8 Engine
1994 - 1995 Buick Roadmaster 4DR SEDAN 5.7L LT1 V8 Engine
1994 - 1995 Buick Roadmaster Wagon Base 5.7L LT1 V8 Engine
1994 - 1995 Buick Roadmaster Wagon ESTATE 5.7L LT1 V8 Engine
1994 - 1995 Cadillac Fleetwood 4DR Brougham 5.7L LT1 V8 Engine
1994 - 1995 Chevrolet Caprice 4DR Base 5.7L LT1 V8 Engine
1994 - 1995 Chevrolet Caprice 4DR CLASSIC 5.7L LT1 V8 Engine
1994 Chevrolet Caprice 4DR CLASSIC LS 5.7L LT1 V8 Engine
1994 Chevrolet Caprice 4DR LS 5.7L LT1 V8 Engine
1994 - 1995 Chevrolet Caprice Wagon Base 5.7L LT1 V8 Engine
1994 - 1995 Chevrolet Caprice Wagon CLASSIC 5.7L LT1 V8 Engine
1994 Chevrolet HEARSE/LIMO Wagon SS 5.7L LT1 V8 Engine
1994 - 1995 Chevrolet Impala 4DR SS 5.7L LT1 V8 Engine
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In stock and ready to ship.One year replacement guarantee.When looking at the knock module you will see two sets of numbers. The top number is the part number of the knock module. This part number is 16188309. The second number is below the part number 16188309 and is a manufacturing sequence number and is ignored when replacing the knock module.
**** Some people are misled by other sellers on and the internet forums that this item is the prom or chip to the computer. This is not a prom or a chip. This is a Electronic Spark Knock Module and is often referred to as simply the knock module. There may be more then one knock module used in a GM application. The knock module in this listing is for the 5.7L B Body GM application from 1994 - 1995 and fits the 16188051 engine computer.
***** This is not a knock sensor. Knock sensors are located on the engine. The knock module is located under the 2 bolt removable cover of the computer.****** This part is used and was removed from a running vehicle. The unit will ship in a see through anti-static sealed bag. The unit is not returnable for a refund once the sealed bag opened. The unit has a 1 year replacement guarantee against any alleged defects. This replacement guarantee covers the purchased part only.
