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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for May 6, 2009
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Open Help Requests for GM
Help Request Answers
1985 Cadillac Eldorado 4.1L oil adapter VIN: 1G6EL5789F
Oil filer adaptor leaking, pulled apart to find GM has discontinued oil ring, square cut oring 7/16 ID, 3/4 OD 1/4tall, hate to buy a lower gasket set to get plus nobody can tell me if it will be in kit. Any suggestions??? Thanks David.
2000 Cadillac Catera 3.0L MIL Lamp on VIN: W06VR54R8Y
Sport light flashing, Mil on in limp home mode when fault is present, cycle the key and fault and codes are gone! all tests for these codes listed in Mitchel lead to no fault found!! Trouble codes: P1120 (tp sensor 1 circuit), P1700 (tcm mil request), P1781 (engine torque signal circuit), P1890 (throttle posistion signal circuit)
1970 Chevrolet c-10 250CID horn,engine temp VIN: CS140SL061
looking for schematic for that year and under hood towards headlites and voltage reg area or all of it,its my 17 year old sons first veh and he is almost done on this two year progect. Any help will do
1996 Chevrolet Tahoe 5.7L Misfire VIN: 3GNEK18RXT
I am out of ideas on this one. comes in with CEL & code listed. doesn't seem to run poorly. Misfire counter continually shows #3 misfire. I have confirmed the plug, wire, cap & rotor are all good(previously replace @ another shop). Customer states that shop to... Trouble codes: P0300 (Random misfire)
1996 Chevrolet Lumina 3.1L No Start VIN: 2G1WL52M6T
need a little help on this while i still have a little hair left. this car sat for a few weeks while the owner was on vacation. came back and would not start, cranks normally. no trouble codes, spark is normal, fuel pressure is normal. no injector pulse. went ...
2000 Chevrolet Cavalier 2.2L Hesitation, Surge, Stall VIN: 1G1JC52427
This car has low power. Replaced timing chain set and tensioner. Have checked cam/crank timing marks several times before assy timing cover. After getting to run, probably hard start due to washed rings, I noticed the engine ran like it was low in time or ca...
2000 Chevrolet Silverado 1500 5.3L brake lights VIN: 2GCEC19TOY
truck came in with only right tail and brake light,found bad bulb at left tail light, and corrosion at left frt marker light. replaced both,now truck has both left and right brake and turn lights, but no left brake light at trailer.
2003 Chevrolet Avalanche 1500 North Face 5.3L door adjar light comes on for rear doors VIN: 3GNEK13T73
Hi Fellas...I got one that is a little bit of a brain teaser so far...So the Avalance comes in for the dash light showing left & right rear doors adjar...of course the doors are not adjar...tested switches(by replacing them) they are fine...check for ground sh...
2003 Chevrolet Astro 4.3L Fuel Gauge VIN: 1GNDM19XX3
Viewing ignition voltage on scanner displays 1.3 volts. Also I noticed transmission in always in third no mater what gear you select. Lighted selector in dash does move with shifter. When problem occurs fuel gauge does not work. No power on secondary hot side ...
2006 Chevrolet Uplander LS 3.5L converter / transmission VIN: 1GNDV23L36
I haven't serviced this vehicle before. Trans slips very bad on take-off or during harder acceleration. Shudders very badly. NO DTCs. Doesn't matter if I start in D, 1, 2, or 3. Nothing that looks abnormal in trans data. It will shift into all gears. Fluid is ...
2006 Chevrolet HHR LT 2.4L Engine starts, then dies VIN: 3GNDA23D66
This HHR starts and dies MANY times before you can finally revv it up to run. Only code is PO300 which pops up at idle when it is running bad and shaking. Alternator charging is rather wild, all over the place, from 15.7 to 13.1, but my Midtronics shows the sy...
2000 GMC Savana 3500 6.5L drl VIN: 1GTHG35F5Y
hi thanks for help in advance. vehicle flashes drl headlights on and off. park brake switch tested and eliminated condition continued. customer has been pull over by police for flashing headlight. when healights are turned on manually they stay on. drl module ...
2000 GMC Jimmy SLE 4.3L lack of power VIN: 1GKCT118W2
could shorted wires caused map sensor to fail ?
2006 GMC Canyon SLE 2.8L wipers VIN: 1GTCS14896
Good Morning gentalman, What I have here is a set of wipers doing what they please, they run all the time and only worked on the slow speed side of the circuit. I have replaced the wiper switch assembly and now I have high speed and low, no intermintant...the...
2005 Hummer H2 6.0L MIL Lamp on VIN: 5GRGN23U75
this limo runs great just the check eng lamp blinks under a load , was running bad did tune up , check fuel pressure and replace injecter on 1 cylinder only the truck runs great and only does this once in a while under a load like when it has 20 people in it o... Trouble codes: P0301
1994 Pontiac Grand Prix SE 3.1L system VIN: 1G2WJ52M9R
Vehicle came in one week ago not cooling, low on freon. Added one can of virgin freon.Cooled well until customer got home. Back next day with no cooling. Low side too high(not a vacuum). Thought maybe orifice stuck open instead of blocked so replaced it. Car c...
1998 Pontiac Grand Am SE 3.1L Oil pressure VIN: 1G2NE52M9W
Hey guys, I have a 98 Grand Am here that blows the oil filter up like a balloon and blows out the gasket as soon as the engine is started. The customer states the vehicle was running fine until one morning when they started the engine, heard a weird noise, an...
2001 Pontiac Aztek 3.4L tcs VIN: 3G7DA03E01
Greetings all. We have this Aztec almost scaring us. It may have a ghost. Came in 2 months ago, another shop did pads and rotors and broke the wire to the RF wheel speed sensor. Repaired that, who hasnt fixed that one before. It was good for about a month, and...

Fixes & Summaries for GM
Fix/Summary Answers
1990 Buick LeSabre Limited 3.8L Idles too fast VIN: 1G4HR54C7L
Thanks to all that responed, the problem was the computer.Even though the scanner read 0 counts on the iac the computer was apparently incappable of closing the iac. With the engine running too fast and the iac counts at 0 I unplugged the iac and used an old t...
1993 Cadillac Seville STS 4.6L no mil VIN: 1G6KY5296P
First I would like to say this post was put on by my co-worker Mike. And the vehicle is done and completed w/passing smog cert. We would like to thank everyone for taking their time out of their busy schedules to respond to this request. The fix turned out to...
1994 Cadillac DeVille Concours 4.6L Cuts out VIN: 1G6KF52Y8R
Thanks for all the help I had all ready checked all the wiring and the coolant temp sensor.All checked out good. The coolant temp stayed at 210 at the engine, per infared thermometer The fix was the PCM
1969 Chevrolet C-10 350CID Starter & Flywheel VIN: CE249S8281
Let me start by saying, WOW! The responses have been incredible. Thanks to everyone, my hat goes off to you all! We have covered most everything that most responses implied already, ie: The support bracket on the back of the starter, extra grounds, counting te...
1995 Chevrolet C1500 5.7L brake lights VIN: 1995CHEVYT
Thanks for the help. Was a broke orange wire on brake switch. Thanks again, Andy
1999 Chevrolet C1500 Suburban 5.7L No Start, MIL Lamp on VIN: 3GNEC16R2X
Thank you all for your help. I checked the timing it was good. but when I pulled the cap it was clear it was in need of replacing. I installed new cap and rotor put back in cust crank snsr and truck starts and runs reset cam retard because I had the distributo... Trouble codes: P0336.
2000 Chevrolet Blazer LS 4.3L lifters VIN: 1GNDT13W8Y
Just about everyone suggested oil pressure. I measured it and was surprised to see that it was just fine. 30 psi at hot idle and up to 65 psi at 3000 rpm. With oil pressure verified I decided on lifters. Cam lift was good and lobe to lobe lift difference was...
2001 Chevrolet Impala LS 3.8L battery drain VIN: 2G1WH55K41
rechecked circuits on bcm and replaced bcm retested had .045 amp draw everything seems ok now. thanks for all the help and info.
2004 Chevrolet Suburban 1500 LS 5.3L Electronic VIN: 1GKEK63U94
2008 Chevrolet Colorado LT 3.7L Misfire VIN: 1GCDT13E18
I has a fairly large 10-15% leak coming out of the valve cover vent. Now we have a diagnosis. Albin in TD forum I have to thank you. It has been such along time since I leak checked a motor I pulled a rookie move. Did you know that you have to pull out the sc... Trouble codes: P0300, P0304.
1999 GMC C1500 Sierra SL 5.7L distributer VIN: 1GAS452LAS
hello fellow techs thx 4 all the replies...i pulled the dist. tdc motor ... and adjusted timing to zero no more light thnx again B
2000 GMC C500 7.4L abs module VIN: 1GDE614B90
Just wanted to say thanx for all the responses. Ended up having to get a hold of a Tech 2 and set the wheel base and tire size etc.
2003 Pontiac Grand Prix GT 3.8L Cuts out, Low Engine Power VIN: 2G2WS52204
Thanks to all who helped with this fix, Ordered new TAC module and installed this morning . Perfect no codes and all is good, Thanks again. Dave B Trouble codes: P1518.
2007 Saturn Vue Green Line 2.4L engine VIN: 5GZCZ33Z77
I decided to change the oil and replace w/ 10w30 instead of 5w30.After approx. 1000 miles of driving,the vehicle used 1/4 of a quart which is much better than before.I think the extreme nature which this engine operates on this hybrid,if in the city or stop an...
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