U1255 Diagnostic Trouble Code Discussion for April 2007
Class 2 Communication Malfunction
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| Help Request | Posted | |
| 1999 Chevrolet Blazer 4.3L No Start VIN: 1GNDT13W8X U1255: Class 2 comm. fault history. Very strange no start problem. No pwr to fuel pump relay KOEO. Fuel pump works with prime connector. Replaced ign. switch (common problem). Verified correct install of switch, turned both switch and key to ACC. No comm. w/ VCM in run position, other modules co... |
April 10, 2007 | |
| 1999 Chevrolet Blazer 4.3L No Start VIN: 1GNDT13W8X U1255: Class 2 comm. fault history. Very strange no start problem. No pwr to fuel pump relay KOEO. Fuel pump works with prime connector. Replaced ign. switch (common problem). Verified correct install of switch, turned both switch and key to ACC. No comm. w/ VCM in run position, other modules co... |
April 26, 2007 |
