Westers Garage

WHAT FOUR LETTER CODE DO WE NEED FOR THE PROM or MEMCAL?
Click HERE to view diagram (click on lower right corner icon to enlarge)

Check the Instructions Page for easy PROM and Memcal removal procedures and installation. Some performance memcals will be piggy backed to an adapter. Pay attention to installation procedures--and always use this page as a guideline.

Vehicle	Box Location	Example Codes
Buick Century	Behind the glove box	BDYC (Memcal or PROM)
Buick Electra	Behind the glove box	4 letters beginning with A or B
Buick Grand National	Passenger side kick panel	BBKJ
Buick Le Sabre	Behind the glove box -- remove under dash panel to access	4 letters beginning with A or B
Buick Park Ave	Behind the glove box	4 letters beginning with A or B
Buick Reatta	Behind the glove box	4 letters beginning with A or B
Buick Regal	Pre 94 Passenger kick panel Post 94 Under hood	AXDN, ASHZ, AZKJ, AJSA
Buick Riviera	Behind the glove box	4 letters beginning with A or B
Buick Road Master	Behind the glove box	4 letters beginning with A or B
Buick Sky Hawk	Behind the glove box	4 letters beginning with A or B
Buick Skylark	Behind the glove box	4 letters beginning with A or B
Cadillac and Northstar	Under the dash towards firewall on passenger side	AZYD, BBAW, BCRN, AZCY
1987-1995 Chevy Astro Van	Passenger side kick panel	4 letters beginning with A or B
Chevy Beretta	Under the dash passenger side	AMAN, AJAB, ATDS, ACSY
1987-1995 Chevy Blazer V6	Behind Glovebox-Under Hood Flash (1994-1995)	BARL, AMRU, ACTW, ANRW
1987-1995 Chevy Blazer V8	Behind Glovebox	BARL, AMRU, ACTW, ANRW
Chevy Camaro Pre 1994	Under the dash passenger side	ACXT, ANTT, BDLD, BDLF
Chevy Camaro 1994-1995	Under the hood passenger side	VIN Needed
Chevy Camaro 1996-2002	Under the hood passenger side	VIN Needed
Chevy Caprice	Under the hood drivers side/Under dash Pass side.	BKNF, BKBW, ATYR
Chevy Cavalier	Under the hood passenger side	BATX, AXDU, AXDY
Chevy Celebrity	Behind the glove box	4 letters beginning with A or B
Chevy CK 1500, 2500, 3500	Behind the glove box 1987-1995 -- remove glove box liner, remove electrical connectors, slide ECM to the left and out	ANLW, ASDU, ASDX, BDJL, BJYL, etc...
Chevy Corsica	Behind the glove box	4 letters beginning with A or B
Chevy Corvette	Passenger side under the dash	AXCR, BAFL, BAFN
Chevy Express	Behind the glove box	4 letters beginning with A or B
Chevy Impala SS	Under the hood behind drivers headlight	BLPR, BSDS, BCSY
Chevy Lumina	Under the hood passenger side	BFRS, BHAK, AUBU
Chevy or Pontiac F body	Under passenger side dash 1986-1993	AUJP
Chevy Monte Carlo	Passenger side kick panel	BKLL
Chevy S10	Behind the glove box--remove glove box liner, remove connectors, slide PCM to the left and out	AMRU, BARL, BCTW
Chevy Tahoe 1987-1995	Behind the glove box -- remove glove box liner	4 letters beginning with A or B
Chevy Tahoe 1996-2007	Under hood	Need VIn and ECM Service #
Chevy TBI FS Vans 1987-1995	Behind panel / rearward of drivers' seat	BPSA, ACUN, ARJT
Chevy Yukon	Behind the glove box -- remove glove box liner	4 letters beginning with A or B
Chevy Z-34	Under the hood passenger side -- remove glove box liner	4 letters beginning with A or B
GMC Sonoma	Under the dash passenger side	ATKN, AZUS, BCZP
GMC Suburban	Behind the glove box	AXHJ, BASB, BANA, BAMP
GMC Syclone	Behind the glove box	AYBN, BBZA
GMC Typhoon	Behind the glove box	AYBN, BBZB
Oldsmobile	Passenger side kick panel--some under hood right side	BMRY, AZJZ, BHFH, AXDN
Pontiac 6000	Behind the glove box -- Access from under dash. Remove panel 7mm screws	4 letters beginning with A or B
Pontiac Bonneville	Behind the glove box -- Usually easier to access from under dash	AYZB, ANWB, BHDZ, AZKN
Pontiac Fiero	Rearward of center console between the seats	AKYN, ALWM
Pontiac Firebird	Pre 94 Under right side dash Post 94 Under hood passenger side	ABWC, APYU, AUJM, AKXY
Pontiac Le Mans	Behind the glove box	4 letters beginning with A or B
Pontiac Grand Am	Passenger side kick panel	BAKJ, BDBR, BFZW
Pontiac Grand Prix	Under the hood passenger side	BKXA, ARHL, ATYY
Pontiac Sunbird	Behind the glove box	4 letters beginning with A or B

Chip BCC "codes" are located on the white paper label that's stuck to the computer. You can also find the chip code by removing the lid from the computer (two 1/4" screws) and checking what letter code is on the silver or white label attached to the Memcal or Prom chip. Once we have those letters, we can program your chip. When calling or Emailing an order we need to know the computer code, year, make and model of your car, the engine size and any after market parts you may have added already--remember our performance chips are computer code specific--that's why they're the best !!

If there's no removable chip (no removable cover, or 'knock module' only under the cover), it's newer than 1992 and it's a "flash" only computer. We will need your VIN number and computer service number to send you a performance computer.