GM Automotive Technicians Technical Discussion and Fixes for Nov 19, 2010 - iATN (Members Only)

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Open Help Requests for GM

	Help Request	Answers
	2003 Buick Regal GS 3.8L started door locks gauges VIN: 2G4WF52153 this car was towed in when u turn the key on it starts itself with out having to turn it over when it starts u cant take it out of gear the gauges dnt work windows dnt work etc thought it be in igntion but didnt help any ideas	View
	1996 Cadillac DeVille 4.6L Stall, Misfire, MIL Lamp on VIN: 1G6KD52YXT coustmer brought this in with a random miss and stalling after scann found codes for randum missfire and ih historw it seemed to be mostly #6 cylinder scoped ingition and all lookeg good. after much checking and testing found just befoe it goes into miss it ma... Trouble codes: P0300	View
	1997 Cadillac Catera 3.0L temp gaurge VIN: W06VR52R3V Temp gauge was erratic on this vehicle. then quit working all together. We replaced the temp sensor with a known good one, replaced cluster with a known good one, replaced the wiring between the cluster and it still doesn't work. the cluster works in another v...	View
	1982 Chevrolet Corvette 5.7L Stall, high idle- at times VIN: 1G1AY078XC Hey fellow enthusiasts ! This car is very clean, has plenty of power, accelerates smoothly and is fun to drive. PROBLEM IS with the idle- sometimes over 1500 rpm in drive and sometimes so low that car stalls. Customer not sure what has or has not been done pri...	View
	1996 Chevrolet Corvette 5.7L Poor Idle Quality VIN: 1G1YY22P2T This Idles fine until hot, have checked evrything. no missfire code, when theres a missfire the engine surges to compensate for loss of idle speed. have checked all components with ohm meter. and pulled one plug at a time, and still get missfire nomater which ...	View
	1999 Chevrolet Silverado 1500 4.8L #6 Cyl VIN: 1GCEK19VOX Thankyou all for your time... This sounds like it should be simple but its kicking our butt. Cust brought in for noise check eng light and rough run. He just had heads replaced for an "exhaust noise" by someone from craigslist. They replaced head gaskets and m...	View
	2000 Chevrolet Monte Carlo SS 3.8L Abs Pump VIN: 2G1WX12K2Y car came in with the initial customer complaint of "dash lights on" checked and vehiole has the abs light on and the trac off light on. scanned for codes with our genisis and came up with a C1242-Pump motor circuit open. Did some searching on here using all th...	View
	2001 Chevrolet Express 3500 5.7L Steering VIN: 1GCHG39R51 Have this Express 1 ton van in the shop. Cust states steering gets hard on turns while braking. We replaced the Pump and Bleed the svstem. Also had a loud click when the brakes were applied and the back brakes were hanging up we replaced all the brakes and als...	View
	2002 Chevrolet Silverado 1500 4.3L Ducts VIN: 1GCEC14W72 This Silverado had good airflow from the center ducts, but poor to none from the defroster or floor ducts.On the drivers side is an actuator that responds when moving the controls. There is a large gear plate that seems to move through its full range, but the ...	View
	2002 Chevrolet Tahoe LS 5.3L No Start VIN: 1GNEK13Z92 Hello All Techs,this truck was towing to my shop with no starts customer complaints,when the tow truck drop it down i going to try it starts right on, and i asked customer what happened and he said this morning he go out to work he get in the truck it crank ov...	View
	2002 Saturn SL2 1.9L Fuel Supply Line VIN: 1G8ZK52732 The customer was driving on the highway when the fuel supply line suddenly ruptured from the fuel rail. Has anyone ever seen this before? Why would this happen? We can replace the fuel supply line but believe something else caused this such as the fuel pressur...	View
	2003 Saturn Ion-1 2.2L No Start, Poor Idle Quality, Stall VIN: 1G8AG52F33 Came in a few days later owner complaned of no start. Started it buy giving it a little gas. Starts and idle will rise and fall like normal, then it will rise to about 1700 RPM. Tried to do a crank cam relearn with Snap-on Modis, but the ECT reading is -18C/0F... Trouble codes: P0509 (IAC fault), P0507 (IAC circuit high)	View

Fixes & Summaries for GM

	Fix/Summary	Answers
	1997 Buick Regal GS 3.8L Cluster & Shifter VIN: 2G4WB52K9V Thanks to all of you who responded, the vehicle is FINALLY repaired. The ignition switch was replaced and the problems seem to be resolved. We were able to replace the switch without the removal of the steering wheel as suggested.	18
	1997 Chevrolet Blazer 4.3L Poor Idle Quality, Stall VIN: 1GNDT13WV2 I fixed this blazer a week ago but wanted to be sure. The fuel pressure was not the problem as many said to keep looking at this, but it never dropped when I was having the problem.No leak from regulator or poppet injectors after several checks but I still re...	30
	1999 Chevrolet K1500 LS 5.0L driveline VIN: 1GCEK19V5X this truck is fixed.after posting out to the group about my situation,most of the consenus was to change out the transfer case chain.it was not bad to look at bbut it must have been stretched just enough to cause it to jump the sprockets under a hard load.its ...	19
	2003 Chevrolet Express 3500 6.0L Prndl VIN: 1GBJG31U54 After the repairs we made (range sensor replacement) the PRNDL display now reads all charaters but just is slightly delayed. Thanks for the replies from Richard from Wa, Harold from Fl, Alex from GA, Greg from TX and Rob from MA. We double checked the sensor r...	5
	2004 Chevrolet Express 3500 6.0L Misfire VIN: 1CBJG31U94 thanks to all for there help, sorry it took awhile to close we got busy with snow tire change overs, found this truck had a bad cam, replace cam and lifters, runs great Trouble codes: P0300.	11
	2005 GMC Sierra 3500 SLT 6.6L Unknown VIN: 1GTHK33275 The cust requested the vehicle to be towed to the dealer. We suspect the tranny computer should be the next step in the repair but we do not have the equipment to re-program. The cust has not contacted us to let us know the final result. If we do hear back fro...	14
	1996 Other GM T 300 5.9L Engine power VIN: 3NKHMH87X0 I removed the turbo because where it is, access to waste gate actuator is nearly impossible. Upon inspection, the actuator was junk so I cut it open. The diaphram was torn from the rusty spring pushing on it (the push plate was disentigrated). This caused t...	3
	2001 Saturn L300 3.0L No Start, Lack of power VIN: 1G8JW54RX1 After doing all that I listed and reading the replies the vehicle was down to a 10 second start time. The customer decided that they needed the car this weekend and picked it up. I dont know if they will be bringing it back but if they do I will post the fix. ...	7

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