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Prev Professional Automotive Repair Technical Discussions for November 5, 2009
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Open Help Requests for GM
Help Request Answers
1992 Buick Roadmaster Estate Wagon 5.7L runs rough all rpm VIN: 1G4BR8374N
Hello all, have this roadmaster come in a month ago for a lack of power and rough running. Checked fuel pressure spark etc. at that time found injector on passenger side not spraying fuel. Had battery voltage at positive side and could make it spray if I groun...
2001 Buick LeSabre Custom 3.8L Steering VIN: 1G4HPP54KX
cust state that she is have trouble getting the car out of park in the mounings. and then there is a electric snapping noise in the left front door speaker sub wolfer area when you open up one of the other 3 doors. for the getting out of park i have already ch...
2002 Buick Regal LS 3.8L all cluster lights VIN: 2G4WB55K62
hey guys.i have a 2002 buick regal that i inherited from another shop. car stalls then when you try to start it all gauges and warning lights flash, heater control flashes and the vehicle won't crank.this is intermitent as by the time i try to test the symptom...
2004 Buick Rendezvous CXL 3.6L MIL Lamp on VIN: 3G5DB03754
Vehicle Starts & runs. Trans. not shifting and error message in Odometer Display. was wanting to know if anyone has any common places the wiring may be rubbing. We checked all visible wiring for chaffing. Pins #2 of the DLC & Pin#58 PCM are testing 7.73K Ohms....
1987 Chevrolet Corvette 5.7L MIL Lamp on VIN: 1G1YY2183H
Runs lean but fair. Engine light comes on after short dive. O2 switches OK for a short time then starts dropping til it is at zero. Getting worse. Tested everthing I could think of but tests are OK. All scan data is normal. Fuel trim is high. Block tearn is as... Trouble codes: 44 (O2 lean)
1990 Chevrolet Corvette 5.7L ABS light on VIN: 1G1YY2381L
Abs light comes on every key cycle. While backing out of shop, put trans from rev to drive, move forward 1 or 2 feet, Heard abs pump motor cycle on twice then light came on. same codes. I am looking for a direction to go as vehicle has so few miles, it doesn't...
1993 Chevrolet K2500 Suburban 7.4L running fault VIN: 1GNGK26N5P
good morning--lost on this vehicle-you can take the key out of the tumbler assy while it is running-turn it in the off posistion and it keeps running-it wont shut off-you can unplug the ignition switch harness in the steering column and even that doesnt shut i...
1993 Chevrolet S10 Blazer 4.3L No Start, Poor Idle Quality, Surge, Cuts out, Stall VIN: 1GNDT13W6P
I am pretty sure that the CPI injector assembly is the root cause of my issues with this vehicle, but want to be sure before I buy and install this expensive little part. Everything seems normal in the engine data other than it goes lean (o2 sensor) when the c...
1996 Chevrolet Camaro 3.8L dome lights also VIN: 2G1FP22K2T
Hi: This Camaro has a weird problem. It was brought to me because of a intermittent no start and flashing security light. Codes 1626, theft deterrent system fuel enable circuit, and 1629, theft deterrent system fuel enable circuit incorrect signal detected dur...
2002 Chevrolet Cavalier 2.2L No Start VIN: 1G1JF52462
Car was towed in from a dealers lot,said the car ran fine when he parked it a week ago,but now it just cranks.Put snap on brick to it . No communication to ecm,cannot get any codes from it or data,however,the bcm will communicate only,and i can make it trigger... Trouble codes: U1000 (no communication)
2005 Chevrolet Express 3500 6.0L spark VIN: 1GBJG31U95
hi guys have a bit of a strange one here.the truck will start most of the time but when it does not start the check engine light will flicker and stay on the whole time you are cranking.while it is in no start mode there is no spark but i think the injectors a...
2006 Chevrolet Uplander 3.5L MIL Lamp on VIN: 1GBDV13L96
i have replaced th solenoid and i still have the same problem also i checked for power and there is power at the solenoid but i also commanded it on and off with scan tool but there is no change,so it appears the the ecm is not grounding the cicrciut any help ... Trouble codes: P0449
2006 Chevrolet Silverado 1500 LT 5.3L Stealth alarm VIN: 2GCEC13V36
Can anybody tell me where the alarm module is in this truck? It's a Stealth system. I've checked the traditional places(lower dash under column,behind glove box, behind radio, and both kick panels). I just need to know where it is because the customer wants it...
2007 Chevrolet Silverado 1500 Classic LS 4.3L Misfire VIN: 1GCEK14X87
hi everyone,this truck misfires at 1500 rpms faithfully the fuel trim no. are not acts like a lean condition caused by a egr but there is no valve.only thing i see is the cam retard is a -7 degrees.would a ign module cause this?any help would be great,... Trouble codes: P0300, P0301, P0304
2002 Oldsmobile Alero GL 2.2L water pump VIN: 1G3NK12F32
water pump was leaking, replaced with brand new one. when car was fired,it was making a loud noise like a bad bearing in the pump. thinking defective replaced pump again, well 3 water pumps later still making same noise it did not do before. i used the special...
2000 Pontiac Sunfire SE 2.2L No Start, Poor Idle Quality VIN: 1G1JC5246Y
We replaced The fuel pump because there was no fuel pressure. Now have lots of fuel pressure but cylinders seem to not be getting fuel. (plugs not soaked and no fuel coming out when plugs are out.) changed the coils to a used set on a whim and car fired up and... Trouble codes: P0621
2001 Pontiac Montana 3.4L Cooling Systems VIN: 1GMDU03E61
Car came in for rough running. I found that coolant was getting into #1 cylinder, pulled off upper intake and injectors, looking through the #1 injector hole I could see coolant running down the intake runner in the head, I pulled the lower intake saw nothing,...
2001 Saturn L300 3.0L head gaskets - water pump - VIN: 1G8JW54R11
there is a tsb #00-t-66a concerning coolant leaks. they list them in order of most likely to occur. the water pump and head gaskets are in the list. i did a test for exhaust gas in the cooling system with both a block tester - it changed color and the exhaust ...
2003 Saturn Vue 3.0L MIL Lamp on VIN: 5GZCZ53B13
Three codes and only one sets a MIL light, P2176(min throttle not learned).We cleaned throttle last time and did a relearn. Other codes( D type codes) are P0318-Rough road sensor signal and P2135 TP sensor 1-2 correlation.No "calibration updates" on AC Delco w... Trouble codes: P2176 (minimun throttle not learned B C Type code), P0318 (Rough road sensor signal D type code), P2135 (TP sensor 1-2 correlation D type code)

Fixes & Summaries for GM
Fix/Summary Answers
1996 Chevrolet Monte Carlo Z34 3.4L oil VIN: 2G1WX12X5T
Well-they decided to go for it so... as per all the helpful replies I removed the lower intake manifold. I tried to pull the oil pump drive up but it wouldn't clear more than a 32nd of an inch so I remove just a little bit of the head and it popped up about 3/...
2000 Chevrolet Malibu LS 3.1L MIL Lamp on VIN: 1G1NE52J7Y
Thanks for all your help one person told me i should have tested the vent valve before i replaced it when i took off the vent tube black stuff like little fine charcoal came out i did clean the system out when i changed the canister and purge valve turned out ... Trouble codes: P0442 (evap small leak detected).
2004 Chevrolet Malibu Maxx LT 3.5L Harsh engagement 1-2nd shift harsh VIN: 1G1ZU648X4
Hi again , I Pray that everyone is having a good day. What I found was that Bookout Auto and Truck Parts in Dora Al. has sold me the wrong trans. I am not sure how much I am to blame. I guess I just goofed trusting them with the application. We gave the VIN an...
2004 Chevrolet Colorado Z71 3.5L abs VIN: 1GCDT13684
We replaced the module but the problem persist. It appears this sensor is particularly suseceptable to damage during installation, and I'm not certain this isn't what is happening. However, the customer has declined any further repairs.Thanks for all the respo...
2005 Chevrolet Cobalt 2.2L many VIN: 1G1AK52F25
Well, another learning experience is complete..Special thanks to Neil from NH and Chris from Delphi.. Neil pointed out that BCM is mostly "interpreted" data and that any module not communicating should be first area to explore.. Chris sent me desciption and op...
2006 Chevrolet Aveo LS 1.6L MIL Lamp on, refueling problem VIN: KL1TD66656
I replaced the EVAP vent valve and solenoid, when i retested to check for a restriction smoke was coming out the vent solenoid telling me there was not restriction, the customer picked car up on Monday and so far there is no problem, THANKS for the help and ad... Trouble codes: P0446.
2006 Chevrolet Suburban 1500 LT 5.3L Cruise Control VIN: 3GNFKI6ZX6
Thank you IATN members, sometimes you need to take a brake and the answer hits you in the face. Timothy from Pennsylvania had the solution. After thinking about this over night I came in and checked the brake lights again, still working (can see reflections ...
2003 GMC Envoy SLE 4.2L Mechanical VIN: 1GKES16S53
Thanks for the input. The engine mounts where the problem. Looks can be decieving. Just wasnt sure, the mounts didnt have any slack and had very little movement but still were bad. Thanks again.
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