P1681 Diagnostic Trouble Code Discussion for April 2017
Control Module Throttle Position System Performance
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| Help Request | Posted | |
| 2002 GMC Envoy SLE 4.2L No Start VIN: 1GKDS13S62 P1681: driver 5 line 1. ... time. This project started as an occasional misfire. Customer went to replace plugs, broke them, dropped porcelain in the cylinder...big noise on start up. LOL gradually ran worse till a no start. Head came off and sent to machine shop. Came back, cleaned ... |
April 10, 2017 |
