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ChevyTech · 11-23-2008, 10:56 PM

Well, there isn’t a code 4 that is stored by the ECM so you should check the code again.

Here are some web sites with the basics on retrieving codes without a scan tool or code reader.

Poor drawing of ALDL but ok instruction + codes
http://www.cfm-tech.com/gm_tbi_trouble_codes.htm

OBDI terminal identification
http://robertpowersmotorsports.frees.../ALDL_plug.jpg

OBDI illustration and instructions
http://www.troublecodes.net/GM/

1985 – 1990 trouble codes instructions
http://www.iroczone.com/specs/TroubleCodes.htm

PS – I usually don’t post over here so send me a PM if I lose track of this thread.

11-23-2008, 10:56 PM	#2
ChevyTech Registered User Join Date: May 2004 Location: Minnesota Posts: 4,621	Re: suburban gas eater Well, there isn’t a code 4 that is stored by the ECM so you should check the code again. Here are some web sites with the basics on retrieving codes without a scan tool or code reader. Poor drawing of ALDL but ok instruction + codes http://www.cfm-tech.com/gm_tbi_trouble_codes.htm OBDI terminal identification http://robertpowersmotorsports.frees.../ALDL_plug.jpg OBDI illustration and instructions http://www.troublecodes.net/GM/ 1985 – 1990 trouble codes instructions http://www.iroczone.com/specs/TroubleCodes.htm PS – I usually don’t post over here so send me a PM if I lose track of this thread.