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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for October 21, 2010
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Open Help Requests for GM
Help Request Answers
2000 Buick Century Limited 3.1L No Heat VIN: 2G4WS52J7Y
I got 130 temp in and out heater hose.I can see temp servo move back and forth.I have just a little heat when not running blower,as soon as I turn blower on heat goes away fast.I can still see heat of 130 in and out heater hose at firewall after warm up,still ...
2001 Buick LeSabre Custom 3.8L door locks
01 lesabre with an intermittant no start. will not crank,radio inop door locks wont work,various lights on dash illuminate.unknown driver is displayed on dash. tried multiple keys to no avail.car will start only after sitting for awhile and i will hear the doo...
1998 Cadillac DeVille 4.6L Brake Fluid level sensor VIN: 1G6KD54Y3W
Okay so I have the above mentioned vehicle in the shop for an intermittent service brake fliud level switch. originally the vehicle came in with the light on all the time and we found the float sticking to the bottom of the master. We replaced the master (with...
1996 GMC Savana 1500 5.7L fuel gauge VIN: 1GDFG15R7T
Fuel gauge fluctuates when driving, stays steady when at standstill. Checked resistence while driving and it does move a bit, there are no baffles in the fuel tank and this vehicle is supposed to have a delay in the fuel gauge for the slosh. We were told that ...
1993 Oldsmobile 88 Royale LS 3.8L Poor Idle Quality, Misfire VIN: 1G3HY53L9P
I dire need of help!! I have an olds 88 with a 3.8, that has a hard misfire on cylinder 1. I have changed the coil, the plugs, the wires, swapped the injectors, all with no change. I checked compression and it reaches 155 psi and holds. The fuel pressure is a ...
1994 Pontiac Firebird Trans Am 5.7L No Start VIN: 2G2FV22P6R
Alright guys I need a little help here. I have this Firebird that was brought into shop 2 weeks ago for a transmission issue. We rebuilt the the tranny and it works fine. Noticed some misfires occuring on test drive so we asked customer if they would like us t...

Fixes & Summaries for GM
Fix/Summary Answers
1998 Cadillac Seville STS 4.6L Service Suspension Light Comes On VIN: 1G6KY5495W
I kinda got lucky on this one! we just happened to have another 1998 cad seville sts pull in for service and swapped the cvrss module it took care of problem! But before that I had ordered a used one anyway. I did what you members recommended checked all wires...
2002 Checker TAHOE 5.3L Abs, On Star VIN: 1GNEK13Z22
well thank you to all that helped. this was a case of taking the customer diag at face value, the rear view mirror was inop, installed new mirror and it worked fine sepreate from the abs/on star. there is not a way to disable the on star and it is the old anal...
1997 Chevrolet Astro 4.3L MIL Lamp on
THANKS EVERYONE!!! sometimes we all over think a simple solution and put trust in the dealer(programming/flashing)when frustrated. Van from hell is FIXED and gone thanks to some level headed iatn members. P0325 is ALWAYS the knock module in the pcm!!! I checke... Trouble codes: P0325 (Knock sensor 1 problem).
1999 Chevrolet Tahoe 5.7L MIL Lamp on VIN: 1GNEK13R6X
Looks like by using scanner and getting 0 reading it took care of it. Simple fix with right info. Thanks al Trouble codes: P1345 (camshaft to crankshaft position correlation fault.).
2001 Chevrolet Silverado 1500 4.8L Misfire, MIL Lamp on VIN: 1GCEK14V0I
This Vehicle was exhibiting two issues at once. I first removed & replaced the Intake gasket. The Cylinder # 8 Misfire cleared up but the # 6 misfire was as strong as ever. I removed and replaced the #6 fuel injector and cleaned out the fuel rail. I believe th... Trouble codes: P0300 (Random Multiple Mis-Fire Detected), P0404 (Egr A Control Circuit Range/Performance), P0405 (Egr Sensor A Circuit Low).
2003 Chevrolet Venture LT 3.4L No Start VIN: 1GNDX03E73
Hello everyone and thanks for the help on this one, it is fixed. The bulk suspected a theft problem and a couple said to zero in on the cam sensor. What i found was this. When the engine would not start, i would give the intake a healthy shot of brake clean... Trouble codes: P1189 (Oil pressure sensor failure).
2003 Chevrolet Venture LS 3.4L all modules VIN: 1GNDX03EX4
First of all, thank you to all that took the time to read my request and offer your help. I was fairly sure that I wasnt dealing with an actual PCM issue since the vehicle would start and run if the starter was jumpered. What essentially happened is that...
2004 Chevrolet Impala 3.8L Cruise Control VIN: 2G1WF55K84
General consensus is the Impala is already wired for cruise. The servo/computer & switches put it in the $$$ catagory. Used/boneyard parts is an option. Guess the old "brick on the gas pedal" method will have to do for now. Thanks to all for your help.
2005 Chevrolet Trailblazer LT 4.2L MIL Lamp on VIN: 1GNDT13S75
Thank's to all that took the time to respond. What I found was no power on terminal 30 at the relay which is supposed to be hot at all times. I opened up the UHEC and found the 60 amp fuse that powers the cicuit was in the wrong place, it was in the cavity to ... Trouble codes: P0410.
2008 Chevrolet Uplander 3.9L radio- window VIN: 1GNDV33W38
Thanks guys for the info,we have not fixed yet due to financial problem.We did put power to the switch from the window and it works fine so we have to pull a wire to the switch,the radio lost power but also it fried the radio so it needs a radio and wiring rep...
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