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Prev Professional Automotive Repair Technical Discussions for July 5, 2019
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Open Help Requests for GM
Help Request Answers
1972 Chevrolet C20 Pickup 5.7L Excessive Emissions VIN: CCE342Z157
The Problem is excessive HC at idle. Everything else is okay. There is no catalytic converter. We have set the carburetor idle jet screws to 2 turns out, from 3 turns out. The engine compartment is very clean and easy to work on also. The spark plug wires ...
2009 Chevrolet Silverado 1500 LT 5.3L Mode Actuator VIN: 1GCEK29049
I have a real problem. The Mode Actuator will not move! I have no trouble codes. I replaced the Mode Actuator with a CQ Unit. Check all fuses (Not Just #55 & #39 & #48) Before you say get a GM Actuator, I also have a 2009 Silverado and I pluged the out OEM...
2012 Chevrolet Silverado 1500 LS 4.8L abs/traction light VIN: 1GCRCREA4C
We initially had these 3 steering angle sensor codes (C0710, C0253, C0455). We cleaned and applied dielectric grease and a shim to the connector to see if this eliminated the problem per TSB. No help. We were setting the code as soon as you moved the steer...
2010 GMC Yukon Denali 6.2L MIL Lamp on VIN: 1GKUCEEF9A
Has anyone come across this code p3400 ( cylinder deactivate Trouble codes: P3400 (Cylinder deactivate)

Fixes & Summaries for GM
Fix/Summary Answers
1990 Chevrolet Corvette 5.7L PASS Key VIN: 1G1YY2387L
As most mentioned, I followed thru on making 6 different resistors, using one at a time, waiting the 5 minutes, the car started. If those 6 didn't work I would of made more until I found the correct value Better to use resistors rather than trying to dial ...
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