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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for March 1, 2018
International Automotive Technicians' Network (iATN) - Members Only
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
2003 Cadillac CTS 3.2L Shift Interlock VIN: 1G6DM57N43
Hello everyone and thanks for replies. We have a 2003 Cadillac CTS that will not shift out of park. Some history on the vehicle is that it used to have a Breathalyzer interlock system in it. After it was taken out, customer had vehicle towed to us for vehicle ...
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2009 Cadillac Escalade EXT 6.2L Stall VIN: 3GYFK22299
Vehicle stalled with customer, he kept restarting it and limped home. Got it towed here, we checked fuel pressure, way too high, we replaced pump module with delphi, pressure still at 85 PSI. Identifix calls for comparing Desired fuel pressure to Fuel pres... Trouble codes: P069E
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1990 Chevrolet C1500 Cheyenne 5.7L MIL Lamp on, pings VIN: 1GCDC14K8L
This vehicle initially came in for a check engine light. The vehicle had a new EGR valve installed (ACDelco). However, the code 42 returned. The customer brought the vehicle in after his guess at an EGR valve did not work. We diagnosed the problem as a ... Trouble codes: 43 (Knock sensor)
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2016 Chevrolet Silverado 1500 LTZ 6.2L Excessive Emissions, No Start, Poor Idle Quality, Stall VIN: 1GCVKSEJ5G
Hello fellow technicians. Vehicle was towed to our shop with a crank no start condition. Vehicle came from a local body shop who had replaced the D/S frame horn. Customer stated that the vehicle ran fine till their final test drive then the truck stumbled ...
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2008 GMC Acadia SLE 3.6L convertor VIN: 1GKEV13778
I am looking for some way to be sure about what appears to be a defective torque converter clutch. This clutch (which engages at 2nd gear) will shudder considerably under slight load pretty consistently. No codes are present and it shifts well. I am findin...
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2011 GMC Acadia SLT 3.6L inop a/c VIN: 1GKKRRED9B
Acadia has inop a/c (withheld per scan tool) (has auto temp control panel, also equipped with rear/aux a/c)..when a/c button (snowflake) depressed, led indicator flashes 3-4 time and a/c remains inop. DTC B0413-04 (low circuit driver's side blend mtr/act...
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Fixes & Summaries for GM
Fix/Summary Answers
2011 Buick LaCrosse CXS 3.6L MIL Lamp on VIN: 1G4GE5EDXB
I found out this problem happened at the same time when the oil was low. Even though there was no cam codes and no timing chain variation I scoped all 4 cam sensors and found out that the rear exhaust cam was 1 tooth retarded. I was able to pull the rear valve... Trouble codes: P2188, P2190.
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2008 Chevrolet Suburban 1500 LTZ 5.3L Lifter VIN: 3GNFK16328
THANKS FOR ALL THE RESPONSES. TURNED OUT TO BE A BROKEN CIRCUIT BOARD IN VLOM ASSEMBLY. REPLACED VLOM AND VEHICLE NOW RUNS AND DRIVES PERFECTLY.
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2007 Pontiac G6 GT 3.9L camshaft VIN: 1G2ZH36137
Wanted to wait a week or so and see if this one came back, but all seems good at this time. We replaced all the lifters, put it back together and no noise, no misfires. Oil pressure was staying between 25 and 35 psi. Not feeling confident this was all that was...
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