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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for October 26, 2010
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Open Help Requests for GM
Help Request Answers
2002 Cadillac Escalade EXT 6.0L assist VIN: 3GYEK63N52
hello all. have this caddy,and when your pulling into a parking spot then turn then straighten wheel it momentarily losses assist in steering wheel very intermitten. have replace hydroboost cause it was leaking, and replaced pump. still having issue. any help ...
2006 Cadillac Escalade 6.0L panic/theft deterrant VIN: 1GYEC63NX6
Hey guys, got and interesting one here. I actually have 3 different GM trucks in the shop all at once with the same problem. What happens is intermittantly,especially at night, the panic alarm will sound for no apparent reason. The customer brought this Escala...
1986 Chevrolet Corvette 5.7L oil temp sensor VIN: 1G1YYO788G
Car is running good now except the oil temp is reading 320 degrees all the time ... at start , while driving etc. oil temp always 320 even with the oil temp sensor unhooked . We plan on checking the gauge tomorrow but the temp sensor is in such bad shape it ha...
1988 Chevrolet Corvette 5.7L Surge VIN: 1G1YY2184J
car has a surge at idle in closed loop and open loop the only thing that makes a difference is when you unhook the timing connector it will stop surging i have done idle learn at least 10 times any help would be great
1990 Chevrolet Lumina Euro 3.1L Poor Idle Quality VIN: 2G1WN14TOL
runs 10 inch of vacum at idle bring up rpms about 300 vacuum is 17 inch idle bad runs ok down the road
2001 Chevrolet Blazer LT 4.3L oil leak VIN: 1GNDP13W01
Have oil leak (very small), looked every where. Put dye in and still can't find leak. Looks like front seal running down and blowing back. Any help would be great. Thanks in advance.
2001 Chevrolet S10 LS 4.3L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1GCCS19W81
I have a customer car, 01 chevy S10 4.3L vortek, that Ijust installed a new engine.When I first tried to start it I wasout of time 180,so I reset the dist. and it fired right up and ran good,took it for a test drive and by the time I got back it started runnin... Trouble codes: P0341
2001 Chevrolet Venture LS 3.4L valve train VIN: 1GNDX03E61
thanks in advance. this van is a commercial vehicle and 200 miles a day is thge norm. after a faulty connection within the underhood fuse center caused the low speed fan to not operate the driver ran it hot and cracked the cylinder heads. having replaced 3 set...
2002 Chevrolet Trailblazer LT 4.2L axle VIN: 1GNDT13S72
just want to start of by thanking for any help recieved. this vehice came in with 4wd not working. when in 4wd the front drive shaft spins but front axle doesn't engage. Removed front diff axle acuator and it does not seem to engage when putting it in 4wd with...
2002 Chevrolet Venture 3.4L Fuel Gauge VIN: 1GNDX13E92
Van came in with CEL on and a fail inspection sticker. Code was P0463. Changed sending unit with one from dealer and the coded did not return. A couple weeks later the same customer comes in with van stating fuel gauge is erratic. I then replaced sender again ...
2003 Chevrolet Venture LT 3.4L cooling fan VIN: 1GNDV03E93
car came in with overheating issue, quickly noticed that the fans were not coming on, but when ac is on both fans are working properly. I pulled the schematic off all data and tested all circuits. I found that the pcm was not being grounded internally to activ...
2004 Chevrolet Suburban 1500 LS 5.3L Aux HVAC Temp Actuator VIN: 3GNFK16Z94
HELP ME! I am already pulling my hair out. This vehicle came in for no auxillary(rear) heat. I have B+, 5v ref, good ground at temp actuator. Performed recalibration and actuators sweep like they are supposed to but the temperature actuator always goes back to...
2004 Chevrolet Silverado 2500 HD LT 6.6L Oil usage VIN: 1GCHK23114
Customer has been traveling across country and developed a severe oil leak on the passenger side of the engine so bad that he has been down 6 quarts twice. I cleaned off engine and ran on hoist to look for leak. I see blow by vapor comming from the PCV vent tu...
2000 GMC K3500 Sierra SL 7.4L Erratic fuel guage a VIN: 1GDJK34JXY
So far we have traced all wires using power probe and cannot find any short in wire , I am going to replace module this am along with relay. However I need to know which com=nnector on the PCM is connector 4 as I need to check pin 12 for ground. Also would it ...
2006 GMC Envoy XL SLE 4.2L MIL Lamp on VIN: 1GKET16SX6
Any suggestions ? for this code po449 Trouble codes: P0449 (Evap vent solenoid ckt.low)
2007 GMC Yukon XL 1500 Denali 6.2L rear defog VIN: 1GKFK63807
this truck came in with battery going dead after its parked. i traced down the draw to the aux port 2 fuse in interior fuse panel suplied by the lbec1 fuse in the engine comparment fuse panel. while i was checking the rear aux port in the rear of the truck i n...
2007 GMC Yukon XL 1500 SLT 5.3L Rear Tail Lamps VIN: 1GKFK13047
When the right signal is on sometimes flashes fast like when a bulb is out but none are burnt, other times the reverse lights flash with the right signal but very dimly, the right running lihght also flashes when conditions occurs. Has no codes in bcm does hav...
2005 Pontiac G6 3.5L electric steering VIN: 1G2ZG52875
veh original problem was intermittent loss of steering assist has code p0545.replace steering torque sensor to correct problem.now it turns itself left by itself.torque pid is -10.50nm at rest.do i just have a bad sensor or am i installing incorrectly? we have...
2007 Pontiac G6 GT 3.9L noise VIN: 1G2ZH36137
this car came in with a whistling noise on accel. traced down to exhaust system. can duplicate noise with light goosing on lift. noise seems to start around last flex joint on exhaust and transmits all the way to the muffler. have dropped exhaust at coupling a...

Fixes & Summaries for GM
Fix/Summary Answers
1986 Chevrolet Corvette 5.7L No Start, No injector pulse VIN: 1G1YY0783G
OK thanks to all replied first off could not be the injectors (they were all unplugged) and couldnt be a cam or crank sensor (doesnt have one) not distributor or icm great signal to the ecm and spark, unplugged both tps and maf, not a power or ground issue ...
1994 Chevrolet K2500 Suburban Silverado 6.5L Cuts out VIN: 1GNGK26FOR
Well Robin, I looks like another evil case of solving crimes for everyone else but me. Too busy to work on my own junk, but I do have a new Standyne pump ordered and will get it on there and if I have more to report I will repost. Thanks for the help. Paul.
1996 Chevrolet S10 4.3L No Start VIN: 1GCDT14X3T
thank u for all the help i checked all the grounds an changed the fuel pump just in case but no go thenks agine everyone have a blessed day
2000 Chevrolet Express 3500 6.5L Extended cranks VIN: 1GCHG35F8Y
Four replies: One said to check crank RPM signal with a scan tool while it is in its long cranking condition. Three said there might be a restrictive net/sock in the fuel tank. I will do these and thank you again!
2005 Chevrolet Trailblazer LT 4.2L Head Bolts! VIN: 1GNDS13S95
What a turd!!! I took all the bolts and measured them, then I put some in and measured their bottomed out length and determined that they were not too long. I reinstalled the head and oiled the threads and heads/washers with oil and not one of them creaked and...
1998 Oldsmobile Intrigue 3.8L turn signals VIN: 1G3WS52K1W
Sorry about the long delay in updating this post. I had a death in the family and I to take a leave of absence. Then my wife was badly burned while I was out of state.(She's doing better now). Anyway, this car came back for some unrelated work the other day, s...
2004 Saturn Ion Red Line 2.0L ignition VIN: 1G8AY12P74
Okay after several hours of troubleshooting, I found that the acc wire was not droping voltage. this wire is supposed to drop out and then the car knows to crank. The car lost comm. between the bcm and ecm but that wasn't the whole issue. the other issue was I...
2007 Saturn Ion-2 2.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G8AJ55F27
Pulled Valve cover and aired up # 4 with valves closed. Exhaust valves are definitely leaking by pretty good. With Saturn no more customer said put it back together and went and bought a Honda. Thinking about it a partially plugged injector making that cylinde... Trouble codes: P0304.
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