checking codes without scan tool? - Blazer Forum - Chevy Blazer Forums


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Old 10-14-2009, 03:25 PM
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Default checking codes without scan tool?

Is there a way to check the trouble codes on these blazers without having a scan tool?

with the jeep I used to have, you could turn the key off and on a certain number of times, and it would flash the codes for you on the light. I was wondering if the blazers had this too?
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Old 10-14-2009, 03:42 PM
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If your vehicle has the OBDII diagnostic system, you need a reader to access the codes.
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Old 10-14-2009, 05:16 PM
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The older systems usually used the flashing trouble codes. OBD II was generally instituted in vehicles made in 1996 and newer. However my truck is a '95 and it has the OBD II plug.
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Old 10-15-2009, 03:06 PM
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only ones you can check without a scanner is the first gens with OBD1 (pre 94), the 95 and I think some 96s had OBD1.5 and require a special scanner. Some 96s and everything after 97 all have OBD2 and the scanner is easy to pick up at any parts store.
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