I want to by a good GM diagnostic tool. Does anyone ahve any suggestions?

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91 Z28 Camaro
305 TPI
Flowmaster 3" exhaust
700R4 with 2000 Stall and shift kit
One sweet sounding system

 

$20 Bucks. WalMart auto section. Hooks directly to the prongs where a dealer would hook the diagnostics tool up to. Comes with manual to explain codes. Codes are pulled after this piece is connected, and by the service engine soon light flashing a certain number of times. Example: "flash, pause, flash, flash"...code 12-ECM check. Its all in the manual. Very easy to understand and use. There is also a tech article on this board that gives you all the trouble codes, and a diagram to show you how to use a paperclip to get the same results. Hope this helps.

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1986 WS6-Equipped 5.0 TPI Trans Am
Random Tech High-Flow Cat
Two Chamber Flowmaster Muffler
Megs Custom 4.5" Stainless Steel Tips
1999 Grand Am GT In-Dash CD Player w/Equalizer(fits like '86 original)
5% Tint On Rear, 35% On Sides
http://www.pitt.edu/~zyhst/trans86/

OTHER RIDE:
1998 C5 6Spd. Corvette Coupe
Silver w/Gray Leather Int.
12/14 Options
Stock(for now)
Best 1/4th: 13.5 @ 104.4MPH

 

Worm,

I'll sell you a "code reader" for a lot less than $20.00. Check this file for all instructions and decoding, and get two paper clips (one to hold together the printed sheets, and one for the "code scanner":

GM Error Codes.pdf

You'll need Adobe Acrobat Reader to view/print the file (see link below).

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Later,
Vader
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"What a Day..."
Adobe Acrobat Reader

 

Vader...

I know you dont like my Code Reader promotionalizing Thats why i also mentioned the tech article...something i should have looked at instead also

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1986 WS6-Equipped 5.0 TPI Trans Am
Random Tech High-Flow Cat
Two Chamber Flowmaster Muffler
Megs Custom 4.5" Stainless Steel Rolled Tips
1999 Grand Am GT In-Dash CD Player w/Equalizer(fits like '86 original)
5% Tint On Rear, 35% On Sides
http://www.pitt.edu/~zyhst/trans86/

OTHER RIDE:
1998 C5 6Spd. Corvette Coupe
Silver w/Gray Leather Int.
12/14 Options
Stock(for now)
Best 1/4th: 13.5 @ 104.4MPH

 

I know all about the aldl connection and how to read the codes but I was hoping to get a better tool to see what the computer is doing. I would like to see exactly what the car is telling the sensors and vice versa. I am thinking of getting into burning chips but I am still collecting info from posts. It will take me awhile.

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91 Z28 Camaro
305 TPI
Flowmaster 3" exhaust
700R4 with 2000 Stall and shift kit
One sweet sounding system

 

Diacom has a decent package for actively reading the ECM data bus, but it's a lot more than twenty bucks, and I don't think you'll find one at WalMart.

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Later,
Vader
------------------
"What a Day..."
Adobe Acrobat Reader