Trouble Ticket Help Requests for DTC P0641
|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|