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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for November 16, 2012
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Open Help Requests for GM
Help Request Answers
2001 Cadillac DeVille DHS 4.6L Air Temp Control VIN: 1G6KE57Y41
Howdy Y'all! I got this 2001 Caddy DTS only cold air blows from drivers side vent. I inherited from another shop. I had codes for all 3 temp actuators B0408 B0423 bo409 and B 1004 loss of KAM for controller. I could not get the new actuator to move either on t...
2005 Cadillac Escalade 6.0L radio VIN: 3GYEK62N15
My own vehicle, and I had a 2003 before, but this Bose with Navigation, does not put out the sound I think it should. All speakers work, it just seems to not have the amplified sound it should. How do I test, can an amp just put out flat stereo?
2003 Chevrolet Impala 3.4L Poor Idle Quality, Surge VIN: 2G1WF52E33
Good evening.I have a 3.4 impala with some problems. Customer said car would go 50 mph with foot off the gas & would idle high at a stop. Confirmed both problems but it only does it about half the time. Scanned & found codes p0101 maf out of range & p0121 tps ... Trouble codes: P0101, P0121
2004 Chevrolet SSR 5.3L Door Locks, Power Top And Door Locks VIN: 1GCES14P04
Got another great 2004 ssr. Truck came in from another shop. Door locks were not working and windows are not working. Customer installed new body control module and it will not program. So we looked at it and body control module we could not communicate with i...
2006 Chevrolet Impala LS 3.5L Misfire VIN: 2G1WB58K66
car has intermittent miss on cyl 2, sometimes 5. Changed plugs,wires, coil pack, no change. pulled upper intake swapped injector to cyl 4, no change. checked ex backpressure with guage, no restriction. ran with o2 out also, still no change. fuel press good. wi... Trouble codes: P0300
2007 Chevrolet Silverado 3500 Classic LS 6.6L Poor Idle Quality, Knock VIN: 1GCJK33D97
Hello all, need help with this diesel today. As stated above we changed the oil and filter along with a fuel filter yesterday and this morning the customer came in complaining about this problem and of course It was fine until it was brought here. I have what ...
2008 Chevrolet Silverado 1500 LT 5.3L Radio VIN: 2GCEK13398
This one has me stumped so some idea would be great. Visit # 1 Volt gage was going from 16v down to 10v and radio was reseting time or shuting down by itself. Found a bad Alt. and replced it. 2 weeks later custome returned complant was that volt gage still goi...
2001 GMC Sierra 2500 HD SL 8.1L trans VIN: 1GTHK23G41
transmission has been scanned with a tech 2 for codes and relearn and had a update done at the dealer.when you drop it in gear it a bang.when it shifts it will hit hard but on time.3rd and 4th not bad.downshifts also hits hard coming down.atsg says line pressu...
2006 GMC Savana 3500 6.6L steering VIN: 1GTHG35296
The day after this truck was worked on it started having an issue with extremely stiff steering which seems to be worse after sitting overnight. After the truck is driven for a while it seems to loosen up, and several times in the last month the customer says ...
2006 Hummer H3 3.5L Starting VIN: 5GTDN13666
thanks in advance for helping with this problem child. The car came in for an update, so we started to do the flash and it failed to download and then lost comm. with pcm. Tried new pcm and tried to programm new pcm with no sucess and the check engine light wi...

Fixes & Summaries for GM
Fix/Summary Answers
2008 Cadillac DTS 4.6L MIL Lamp on VIN: 1G6KD57948
Thank You Dustin for the explanation of how this works. There is a 5 volt referrence sent to the sensor and signal wire back to the DME. Also one ground wire. We had .21 volts in live data at atmospheric pressure. Should be 1.5 volts. Jumper 5 volt referre... Trouble codes: P0454.
2000 Chevrolet C3500 5.7L Hesitation VIN: 1GCGC34R0Y
I looked at and tried all the recommended comments. The truck is no better so I think I am going to send it to a GM dealer for reprogramming to see it it fixes it. Trouble codes: P0101, P0122 (Tps), P0404 (Egr), P1122 (Tps).
2002 Chevrolet Silverado 2500 HD 6.6L monitor not running VIN: 1GCHK23172
I checked enabling criteria and parameters from the list Jason gave me.All were within specs.I checked fuses(fuel heater),connectors,and vucumn(22plus inches)and commanded solonoids on and off which worked and affected egr flow according to my Genisys.I will l...
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