03-20-2009, 03:23 AM
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#1
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GLS member
Join Date: Sep 2008
Location: The Dotte of Michigan
Posts: 1,145
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Pcm, Bcm, Vcm, Sdm, Dtc???
Ok I see these little trinkets of acronimaly arround alot, and i have no idea what they are, and what they do. Call me a noob, and laugh if you want, but i honestly have no clue what they are, help please 
edit because i forgot to mention, I looked all over and eaither i missed it or just couldnt find anything on what these are or what they do.
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1999, RED Alero GX
Mods: WAI/CAI Intake w/ K&N Filter, Dynomax Muffler, B&M Shift+ Drag DR-9 Wheels, Yokohama YK520 Tires
Soon to come: Full 2.5'' Exhaust, Re-Worked CAI Utilizing Factory Air Box, AAS Body Kit, KYB Struts, Sprint Springs
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03-20-2009, 07:18 AM
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#2
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Gone
Join Date: Mar 2004
Location: Lockport Ny
Posts: 19,244
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we have a PCM and BCM.
PCM controls all of our engine functions
BCM controls our lights and stuff. (someone can get more detailed)
the others are similar units, but for other cars.
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03-20-2009, 09:01 AM
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#3
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Now a Ford Traitor.
Join Date: Mar 2008
Location: Greenland
Posts: 6,996
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Quote:
Originally Posted by cherrington17
we have a PCM and BCM.
PCM controls all of our engine functions
BCM controls our lights and stuff. (someone can get more detailed)
the others are similar units, but for other cars.
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BCM controls, the radio and shit, accessories?
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03-20-2009, 10:07 AM
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#4
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V.I.P. Member
Join Date: Jul 2004
Location: Kalamazoo, MI
Posts: 477
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If I am correct here....
PCM (powertrain control module) controls engine and trans
BCM (body control module) controls all accessories (airbags, windows, locks, radio, etc)
SDM (sensing/diagnostic module i think) controls airbag deployment
DTc = diagnostic trouble code I think (it's what you get with a scan tool, the trouble code)
I am not a real tech so someone good can fill in the rest.
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03-20-2009, 10:08 AM
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#5
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636 whp
Join Date: Aug 2006
Location: AZ
Posts: 11,876
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PCM: Powertrain Control Module
BCM: Body Control Module
DTC: Diagnostic Trouble Code
VCM: Vehicle Control Module (used interchangeably with PCM)
SDM: Sensing Diagnostic Model
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03-21-2009, 12:48 AM
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#6
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Moderator
Join Date: Nov 2004
Location: Long Grove, IL
Posts: 5,002
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The term VCM was really only officially used by GM on the trucks with the black-box VCMs (96- C/K trucks). Before they got dedicated BCMs.
There's also..
EBCM: Electronic Brake Control Module.
RCDLR: Remote Control Door Lock Receiver
DLC: Diagnostic Link Connector.
There's a whole article in the service manual with a ton more, but it's about twice the length allowed for a post.
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Cliff Scott
2004 Alero GX w/sport pkg - Sold, living somewhere in WI now.
2011 Saab 9-5 Turbo4 M6
2004 Corvette Convertible M6
1994 Chevy Beretta - Quad4/M5
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03-21-2009, 12:52 AM
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#7
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Now a Ford Traitor.
Join Date: Mar 2008
Location: Greenland
Posts: 6,996
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isint there one, ECU and some others from the OBD I cars?
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03-21-2009, 12:53 AM
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#8
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2Screwy
Join Date: Dec 2003
Location: South Dakota
Posts: 13,238
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how about WTF, GTFO, STFU?
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03-21-2009, 12:54 AM
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#9
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Now a Ford Traitor.
Join Date: Mar 2008
Location: Greenland
Posts: 6,996
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03-21-2009, 01:15 AM
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#10
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GLS member
Join Date: Sep 2008
Location: The Dotte of Michigan
Posts: 1,145
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lol, thanks for the info, maybe now it will be easyer to wrap my head arround computer tuneing and all that.
__________________
1999, RED Alero GX
Mods: WAI/CAI Intake w/ K&N Filter, Dynomax Muffler, B&M Shift+ Drag DR-9 Wheels, Yokohama YK520 Tires
Soon to come: Full 2.5'' Exhaust, Re-Worked CAI Utilizing Factory Air Box, AAS Body Kit, KYB Struts, Sprint Springs
Last edited by KenshinZero : 03-21-2009 at 04:27 AM.
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03-21-2009, 01:29 AM
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#11
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GLS member
Join Date: Oct 2006
Location: Phoenix
Posts: 4,284
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Quote:
Originally Posted by cherrington17
we have a PCM and BCM.
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cherry also has add, ibs, an hmo, a gpa, and an std (but we don't talk about that)
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2003 2.2 Eco http://www.cardomain.com/ride/2478473 SOLD
1994 Chevy Suburban aka The Zombie Mower 4" Rancho suspension lift 2" body lift. 315/75/16 Mickey Thompson Radial M/Ts 10000K HID 12" JL W3 Subs in custom box 1000W Alpine mono amp 1F capacitor 6.5" JL mids 4X6 Pioneers in dash 450W Alpine 4 channel Dynomax cat & exhaust
2007 Cadillac Escalade EXT chameleon paint, Cadillac 22" wheels
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03-21-2009, 01:31 AM
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#12
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GLS member
Join Date: Sep 2008
Location: The Dotte of Michigan
Posts: 1,145
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Quote:
Originally Posted by HazMatt24
cherry also has add, ibs, an hmo, a gpa, and an std (but we don't talk about that)
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__________________
1999, RED Alero GX
Mods: WAI/CAI Intake w/ K&N Filter, Dynomax Muffler, B&M Shift+ Drag DR-9 Wheels, Yokohama YK520 Tires
Soon to come: Full 2.5'' Exhaust, Re-Worked CAI Utilizing Factory Air Box, AAS Body Kit, KYB Struts, Sprint Springs
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03-21-2009, 01:49 AM
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#13
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Moderator
Join Date: Nov 2004
Location: Long Grove, IL
Posts: 5,002
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Quote:
Originally Posted by Nate's Alero
isint there one, ECU and some others from the OBD I cars?
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Even some newer cars have an ECM. Those would be ones that have no transmission control functions.
__________________
Cliff Scott
2004 Alero GX w/sport pkg - Sold, living somewhere in WI now.
2011 Saab 9-5 Turbo4 M6
2004 Corvette Convertible M6
1994 Chevy Beretta - Quad4/M5
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03-21-2009, 01:57 AM
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#14
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GLS member
Join Date: Aug 2006
Location: Grand Forks, ND for school; Langdon, ND home
Posts: 2,632
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Quote:
Originally Posted by HazMatt24
cherry also has add, ibs, an hmo, a gpa, and an std (but we don't talk about that)
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2001½ F150 XLT Crew Cab- true dual glasspacks with x-pipe, AEM intake, SCT X3 with VMP custom tunes, full stereo system, HID 55w heads and 35w fogs, 35% tint front and 20% rear, Lightning tail lights
04 F6 Sno Pro Team edition- MBRP race can, ODS clutch kit
01 YZ125- bored out to 144, PnP cylinder and head, Pro Circuit WORKS suspension, many other mods
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03-21-2009, 02:05 AM
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#15
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The Plane Mechanic
Join Date: Feb 2009
Location: South GA
Posts: 101
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Quote:
Originally Posted by [ion] C2
PCM: Powertrain Control Module
BCM: Body Control Module
DTC: Diagnostic Trouble Code
VCM: Vehicle Control Module (used interchangeably with PCM)
SDM: Sensing Diagnostic Model
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nice to know...so u dont give someone this face when they r talkin bout it  |
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03-21-2009, 02:05 AM
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#16
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GLS member
Join Date: Sep 2008
Location: The Dotte of Michigan
Posts: 1,145
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Exactly, lol
__________________
1999, RED Alero GX
Mods: WAI/CAI Intake w/ K&N Filter, Dynomax Muffler, B&M Shift+ Drag DR-9 Wheels, Yokohama YK520 Tires
Soon to come: Full 2.5'' Exhaust, Re-Worked CAI Utilizing Factory Air Box, AAS Body Kit, KYB Struts, Sprint Springs
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03-21-2009, 01:58 PM
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#17
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GL Member
Join Date: Jan 2007
Location: las vegas
Posts: 578
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TCM = transmission control module...... my truck has one.
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CARDOMAIN W/ DRAG VID & LIST OF MODS
Trevtec Motorsports built & driven - LV,NV
Revolution Lounge @ the Mirage
Promoter - PM me to be put on the list. Ladies first drink free wed, thur, sat
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03-21-2009, 02:17 PM
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#18
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GLS member
Join Date: Jul 2008
Location: Tampa Bay, Fl
Posts: 1,127
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Quote:
Originally Posted by spyhunter
TCM = transmission control module...... my truck has one.
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Alot of the dodges/mitsubishis have those also
the only idea i have with having instead of just a PCM.. i guess it makes things easier to diagnose since there is the seperate ECU and TCM
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2001 Oldsmobile Alero GL Sedan LA1 3400 SFI V6
Nickname : Midnyte
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