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Prev Professional Automotive Repair Technical Discussions for March 27, 2015
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
2004 Cadillac SRX 3.6L key stuck in cylinder VIN: 1GYEE63744
im sure this is a common problem but any help would be appreciated, thanks in advance
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1999 Chevrolet K2500 7.4L Timing VIN: 1GCGK24J5X
Please Help I Think ECM is Confused From Running out of fuel during Cam & Crank Calibration
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1996 GMC K2500 Sierra SL 6.5L No Boost VIN: 1GTGK29F3T
This 6.5 intermittently has no boost and sets the code P1656. Has good vacuum to wastegate solenoid and the lines are in good condition. The wastegate actuator holds vacuum and the wastegate seems to move freely. I have replaced the solenoid, suspecting it mig... Trouble codes: P1656 (Intake CMP Actuator Solenoid Control Circuit)
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2011 GMC Sierra 1500 SL 4.8L MIL Lamp on VIN: 3GTP1UEA4B
Truck came in with message in cluster that says "A/C disabled due to hot temp condition". the fans run all the time and a code P0116 is active. freeze frame shows that the code sets at 0 sec. (when you first turn key on) and coolant temp is 190F. we first repl... Trouble codes: P0116 (ECT sensor performance issue.)
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Fixes & Summaries for GM
Fix/Summary Answers
1999 Chevrolet Express 2500 5.7L turn signals VIN: 1GCGG25R2X
Problem was voltage bleed, park light circuit to turn circuit internal to both ft. sockets. yes both. I disagree that a 0.8 amp. 1157 bulb will draw enough current to properly stress test poor connections/grounds. Thatís why I use a 4 amp. headlight .I Cu...
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2003 Chevrolet Avalanche 1500 North Face 5.3L transfer case VIN: 3GNEK13T93
Thank you for all the replies. After 2 encoder motors and replacing with a 3rd OEM motor it is fixed. Lesson learned, never trust aftermarket encoder motors!
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2006 Chevrolet Impala LS 3.5L Misfire VIN: 2G1WB58K46
Thank you to all that offered advice. The fix in this case was simple. Number 5 spark plug wire was damaged by the owner trying to remove it in order to service the spark plugs. It was only found after pulling and flexing the cable with the ohmmeter installed....
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2009 GMC Sierra 1500 SLT 5.3L No Start
OK GUYS and GIRLS this one was at the dealer for 3 weeks after they gave up on diagnostic GMC techline had them start throwing parts at it! pcm was the fix but they could provide no verification test to show bad pcm. Tech people in Detroit want the pcm for in... Trouble codes: C0561.
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