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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for December 15, 2006
International Automotive Technicians' Network (iATN) - Members Only
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Open Help Requests for GM
Help Request Answers
2003 Cadillac CTS 3.2L Stability Control VIN: 1GGDM57N73
Car came in with complaint of "Stability Control Activated" on information screen. At same time cust notices that a slight braking action and pulling to the left when this message occurs. It did occur on test drive just as customer stated. I retrieved a histor...
1995 Chevrolet S10 4.3L Misfire, MIL Lamp on VIN: 1GCDT14W4S
This little S10 is running pretty bad, definate misfire. All ignition parts are good and fairly new. The injector is plugged. Does anybody out there have a good way to clean these things? I put some really good inj. cleaner in the tank, and dead headed the pum... Trouble codes: P0305 (CYL 5 Misfire)
1997 Chevrolet Camaro 3.8L Stall, Misfire VIN: 2G1FP22KXV
this camaro belongs to one of my cousins, it will quit intermitently, it has only quit for us once while making a left turn, it is recording random missfires on all cyl, but just a few at a time[3-4] also, technician Ron said that the m,a,f, shows 300+ grams p... Trouble codes: P0300
1998 Chevrolet Cavalier LS 2.2L No Start VIN: 1G1JF5242W
this vehical has a starting problem when it is cold out in the morning after its been sitting all night.when you go to start it,it will start then shut right off then it may do it again or it may not start at all after about 15-20 tries you can get the vehical... Trouble codes: U1016
1998 Chevrolet Astro 4.3L Rear brakes VIN: 1GNDM19W1W
I'm having nightmare problems with this vans rear brakes. Came in needing rear brakes. Right shoes were 6/32 inch but broken in pieces (from heat I think) and drum was ruined. Left shoes and drum were good. Installed new shoes on both sides and a new drum on r...
2002 Chevrolet Camaro 5.7L slave cylinder VIN: 1JMFD59YOX
have installed a 02 ls1 drive train into a 93 rx7. all is well except for the slave cylinder. it is an internal slave. the slave develops a leak from the threads on the bleeder screw. I have replaced the first new unit with another new unit (both factory) wi...
2004 Chevrolet Tahoe LS 5.3L speedometer VIN: 1GNEK13Z14
customer complains of intermitantly no speedometer. unable to verfy. used car manager wants fixed. anyone got any ideas for a ford tech. what sensor trigers speedo?
1992 Geo Storm 1.6L lack of power VIN: J81RF2361N
unable to ajust timing to spec of 10 degrees. timing was originally at 30 degrees. when you try to adjust timing close to spec vehicle has a major lack of power. when distributer placement at max adjustment of 37 degrees vehicle runs better.vehicle is failing ...
1993 Oldsmobile 88 Royale 3.8L Stall VIN: 1G3HN53L3P
The car will start and run for 10 to 15 seconds, then dies. If you dont turn the key off and try to start it again it will only crank. If you turn the key back to the off position then immediatly try to start it again, it will start for another 10 to 15 second...
2001 Oldsmobile Alero GL 2.4L battery VIN: 1G3NL52T91
customer had battery installed somewhere else last week. she is having to jump start it most often. found huge drain on battery when removing fuses. problem is i can not find what this fuse powers. the description is R\H BEC BATT. i can not find anything anywh...
1995 Pontiac Grand Prix SE 3.1L MIL Lamp on VIN: 1G2WJ12M1S
Hello fellow techs, I have code 77 egr solenoid #3 error, Installed new egr valve after making sure passage was not clogged up, checked emmissions fuse 15amp it is good,Circuit 241 (brown) has 12 volts, circuit 699 (Red) which is circuit for solenoid 3 did ohm... Trouble codes: 77 (EGR Solenoid 3 Error)
1997 Pontiac Bonneville SE 3.8L Hesitation, Misfire, MIL Lamp on VIN: 1G2HZK7VH2
Here a good one guys...Car came in surging idle and misfire and lean code. Car has new plugs, wires, fuel filter, pcv,and ignition module. Intake Of Course... was leaking around the egr tube surprise... Now the car is only misfiring on the front 3 cylinders. F... Trouble codes: P0171, P0300
2001 Pontiac Grand Am SE 2.4L No Start VIN: 1G2NF52T21
the car will not start at times after running for a while. after trying 2 or 3 times it may restart. the fuel pressure is normal. when checked for codes p0336b crank sensor set. it reset so we replaced the sensor and checked the wireing and ign module.they che... Trouble codes: P0336
2004 Pontiac Grand Prix GTP 3.8L Blower Runs -Key Off VIN: 2G2WR524X4
Car first came in 8 weeks ago, Blower On High - Key Off! replaced Blower Control Module (resistor/relay assembly) Returned with same condition 5 weeks later! Replace Module again. Suspected excessive amperage draw. Tested blower amperage draw 14.2 amps peak,...

Fixes & Summaries for GM
Fix/Summary Answers
2002 Buick Regal LS 3.8L Hesitation, Surge, Stall, Misfire, MIL Lamp on, HARD START VIN: 2G4WB55K62
it was found that the converter plugged.with that the exhaust had no where to go besides through the egr valve the exhaust went through the tube and melted a hole in the top of the plentum causing a huge leak but with the harness in the way you couldnt see it ... Trouble codes: P0131 (o2 signal low b1 s1), P0300 (random misfire), P0403 (egr solenoid signal out of range), P0404, P0405 (egr sensor a signal short/low).
1996 Chevrolet Cavalier 2.2L No Start VIN: 1G1JC1245T
The customer decided to trade the car & not repair it. On the 9 responses this is some of the information i received. Anthony from new york suggested ,that even though the passlock was replaced that it could be bad again. Richard from new york said to check cr...
1999 Chevrolet Cavalier 2.2L Excessive Emissions, High NOx VIN: 1G1JC524XX
Thank you for all the responses. I replaced the Catalyst & the Pre-Cat HO2S & it passed with flying colours. Thanks iATN!
2000 Chevrolet Blazer LS 4.3L MIL Lamp on, BLOWS FUSE VIN: 1GNDT13W1Y
Found some wires bad on the passengers side! repaired wires @ everything seems fine. Didn't find any burnt but found some that were corrodide. Were splice was on fuse wire for o2 heater circuit. Trouble codes: P0133, P0135, P0147.
2001 Chevrolet Silverado 1500 4.8L steering wheel VIN: 2GCEC19V11
Thanks to all you guys who sent in replies. We rebalance the tires and still had an issue. We tried installing tires from another vehicle and still had the issue. We pulled the wheels and check the front hubs one seemed tight. We checked the runout as per Blak...
2001 Chevrolet Tahoe 5.3L Heater Performance VIN: 1GNEK13T91
I would like to thank all of you for your replies. I was blessed with this one to have left and come back due to the customer needing his vehicle. When the vehicle returned I no longer had much heat when idling in the shop as I had before. The heater hoses wer...
2001 Chevrolet Astro LS 4.3L No Start VIN: 1GNEL19WS1
WOW 27 replies, 90% of you said to change the fuel pump module. This is what fixed it. A few of you thought that possibly the spider assembly could be at fault. Basically the pump could not develop enough pressure to overcome the regulator. I also updated the ...
2004 Chevrolet Cavalier 2.2L cylinder slave VIN: 1G1JC12F54
hi thanks to all who reply. specially dan for send me the PI number. the car is ready and running. I replace but the slave with the master. normally I change both but lot of cash gone for christmas so I try to save. but better do it rigth. so I spend Another 1...
1989 GMC S15 Jimmy 4.3L Poor Idle Quality VIN: 1GKCT1826K
ok it's not fixed but i have other things to add, i have replaced the fuel pump,fuel filter,the dist,cap/rotor plugs,replaced the idle control valve,tps sensor,tried another throttle body-complete out of another same year chevy s10-i feel it is the ecm i have ...
2003 GMC Yukon XL 1500 SLT 5.3L Poor Idle Quality, MIL Lamp on VIN: 3GKFK16Z23
The truck needed intake manifold gaskets. I smoke tested it when hot and didn't see anything. I smoke tested it cold and it poured the smoke out. The fuel trim came right back to 0 after the intake gaskets were replaced. Someone mentioned updated gaskets. I pu...
1993 Saturn SL1 1.9L Poor Idle Quality, Stall VIN: 1G8ZG559XP
Thanks to everyone who replied. It turned out to be the IAC so far. I did also put a fuel punm module in for fuel pressure dropping. I did clean the pressure regulator with shop air as suggested. So far so good. Thanks again.
2003 Saturn Vue 2.2L ratio cntrl mtr circuit B1 VIN: 5GZCZ33D33
After re - running the tests for code 1885 numerous times to make sure I was not missing anything I contacted the body shop this vehicle came from and found out that they had replace the complete engine wiring harness while repairing crash damage. I found that...
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