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P1639 Diagnostic Trouble Code Discussion for January 2008

5-Volt Reference 'B' Circuit Malfunction


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Trouble Ticket Help Requests for DTC P1639
Help Request Posted
2002 Chevrolet Trailblazer LS 4.2L Cuts out, Stall, MIL Lamp on VIN: 1GNDT13S82
P1639: 5-Volt Reference 2 Circuit Malfunction. ... intermittently. Initially, the customer told me the vehicle bucked with the security, ABS and MIL & low power lights coming on. It kept running and he was able to drive it to our shop. I retrieved codes P1635 - 5 Volt reference 'A' low. The problem wen...
January 17, 2008
2002 Chevrolet Trailblazer LS 4.2L Cuts out, Stall, MIL Lamp on VIN: 1GNDT13S82
P1639: 5-Volt Reference 2 Circuit Malfunction. ... intermittently. Initially, the customer told me the vehicle bucked with the security, ABS and MIL & low power lights coming on. It kept running and he was able to drive it to our shop. I retrieved codes P1635 - 5 Volt reference 'A' low. The problem wen...
January 25, 2008
2002 Chevrolet Trailblazer LS 4.2L Cuts out, Stall, MIL Lamp on VIN: 1GNDT13S82
P1639: 5-Volt Reference 2 Circuit Malfunction. ... intermittently. Initially, the customer told me the vehicle bucked with the security, ABS and MIL & low power lights coming on. It kept running and he was able to drive it to our shop. I retrieved codes P1635 - 5 Volt reference 'A' low. The problem wen...
January 17, 2008
2002 Chevrolet Trailblazer LS 4.2L Cuts out, Stall, MIL Lamp on VIN: 1GNDT13S82
P1639: 5-Volt Reference 2 Circuit Malfunction. ... intermittently. Initially, the customer told me the vehicle bucked with the security, ABS and MIL & low power lights coming on. It kept running and he was able to drive it to our shop. I retrieved codes P1635 - 5 Volt reference 'A' low. The problem wen...
January 25, 2008