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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for November 20, 2019
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Open Help Requests for GM
Help Request Answers
2006 Buick LaCrosse CX 3.8L passlock VIN: 2G4WC58246
Replaced and set up module, vehicle will not crank. Tried key learn, the module says: 2 keys learned. Has Code P1631 "Theft deterrent signal not correct". Had and experienced automotive locksmith check it out and try his equipment, he had no luck. I did th...
2005 Cadillac SRX 3.6L No Start VIN: 1GYEE63785
Hello IATN Nation, We have a caddy that has a communication issue. It will not communicate with a scan tool or crank until you jump out the starter relay. After that all modules are awake until you shut the car off and it sits over nite. Power and grounds ... Trouble codes: U0100 (lost comm. with ecm)
1996 Chevrolet C1500 Cheyenne 4.3L hard start VIN: 1GCEC14W6T
Truck came in for a starter problem. We replaced the starter and rear main seal. Also replaced the lower intake gasket. Customer states that ever since the repair was made, the truck is hard to start when hot. I am able to duplicate this concern. It seems ...
2016 Chevrolet Silverado 2500 HD LT 6.0L Body module VIN: 1GC0KUEG8G
Keeps setting U0401 code in BCM have ran what little diagnostics there in Mitchell with no answer, also perfomed bulliten repairs with no fix, also reflashed ECM and BCM. Code is U0401 symtom 71 invalid data recieved from ECM. Checked all communication wir...

Fixes & Summaries for GM
Fix/Summary Answers
2016 Chevrolet Malibu LT 1.5L engine VIN: 1G1ZE5ST2G
Thanks for the advice!!! Found a TSB on this problem about reluctor wheel moving on camshaft. This is what the problem was!! I had read about reluctor wheel problems on google and such. All that I found said to tap reluctor wheel with hammer and check for ...
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