P0641 Diagnostic Trouble Code Discussion for August 2014
5-Volt Reference 1 Circuit Malfunction
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| Help Request | Posted | |
| 2004 GMC Envoy SLT 4.2L Hesitation VIN: 1GKET12S84 P0641: 5-Volt Reference 1 Circuit Malfunction. This vehicle was brought in and when stepping on gas reduced power light comes on and vehicle seems to be in almost a limp mode. Can not get over 30 miles per hour. It has very little power. I have been checking posts and was wondering if it needs updated prog... |
August 03, 2014 |
