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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for May 25, 2006
International Automotive Technicians' Network (iATN) - Members Only
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
1983 Buick Regal 3.8L oil blowing out of dip stick hole VIN: 1G4AM479SB
1997 Buick LeSabre Custom 3.8L coolant VIN: 1G44P52K1V
what we are experencing is engine oil contaminating the cooling system . the system has been flushed numerous times .any help would be appriciated .
2000 Buick Park Avenue 3.8L theft deterrent VIN: 1G4CW52524
when vehicle would not crank door lock and alarm worked fine. opened doors with key and remote. no help. no voltage to S terminal on starter, remote switch to s terminal with key on vehicle ran and died in 10 seconds. Scan tool interfaced with all modules exce...
1992 Cadillac DeVille 4.9L Excessive Emissions, No Start, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall VIN: 1G6CD53B1N
This Cadillac came to me with a sometimes it acts up at the stop light description. The car didn't act up the first time I had it so I did a complete tune up since at 165K miles it had never had a tune up. The vehicle ran great and left. It returned a week lat...
1997 Cadillac DeVille 4.6L No Start VIN: 1G6KD52Y6V
hello fellow iatn members. i need some guidance on a cadillac i took on to repair. was towed in as a no start. theft problem message appears on dash. when i noticed the mileage on this vehicle i figured i would be looking at a bad ignition lock cylinder. i wen...
2000 Cadillac DeVille DTS 4.6L Hesitation, Surge, Cuts out VIN: 1G6KF5799Y
Greetings,I have a strange problem here.Vehicle intermitently has absolutely no power,drives like its exhaust is plugged,or lack of fuel.Whats strange is when it happens,if you shut the car off and restart it will be fine.Everythiing I can see on the scanner l...
1992 Chevrolet Camaro RS 5.0L radiator fan VIN: 1G1FP23E6N
Hi Guys! I need to inquire who would know what GM/AC Delco fan switch part numbers that I may use to actuate the radiator cooling fan at a lower temperature than this vehicle was designed for. I have this vehicle that runs so damn hot you can fry eggs under th...
1994 Chevrolet K1500 4.3L Cuts out, backfire thru intake VIN: 1GCEK14Z5R
Truck came in running poorly, backfiring thru exh & intake, egr code, iac code & knox sensor code plugs & wires replaced 1 yr ago. we replaced dist cap & rotor(corroded), egr valve (seal blown)idle air control motor(carbon build up )rebuilt fuel pressure regul... Trouble codes: 35 (idle air control motor)
1996 Chevrolet Astro 4.3L engine VIN: 1GKDM19W7T
1996 astro, which way does engine come out, bottom with subframe removal or thru front (will have to cut core support)? book pays 7.5 hrs. ,doesn't seem like enough either way. thanks, pete
1997 Chevrolet Cavalier 2.2L oil pressure VIN: 1G1JC5241V
Hey GM techs, this Cavalier is getting on my nerves. Engine had very noisy t-chain and gears, and oil light would come on at hot idle. Recommended to replace engine, customer wanted to try to fix. Replaced t-chain and gears, and tensioner/guide, removed oil pa...
2000 Chevrolet Impala 3.4L No Start VIN: 2G1WF55E4Y
Vehicle came in as a no start but initially started. After a few starts, vehicle stopped starting w Security light activated. Found a remote starter installed and key would come out of ignition in run. Replace lock cylinder and removed car starter, putting sec...
2000 Chevrolet Venture 3.4L MIL Lamp on VIN: 1GNDU03EXY
the camshft position sensor was failed. mitchel show that the replacement labor is only 1.3 hours. however, in order to removed the camshaft sensor, i shoud removed the power steering pump. furthemore, i order to removed the power steering pump, i have to remo...
2001 Chevrolet Blazer LS 4.3L Vacuum System VIN: 1GNCT18W71
The customer changed his control head and brought the vehicle to us to check his installation because it wouldn't switch vents. We checked and found the recirc door motor and mode door motors diaphragms ruptured. We replaced both and the system ran well for a ...
2001 Chevrolet Blazer LS 4.3L abs module VIN: IGNDT13WXI
Vehicle came in with complaint that abs and brake light on intermitently. Becoming more frequent. Tested for codes found CO265. Have tested for power and ground on 2 wire connector. Seems OK. Removed other connector from module, looks clean. Also may be unrela...
2002 Chevrolet Cavalier LS 2.2L cooling fan fuse VIN: 1G1JF52442
Cavalier came in with SES and traction control light illuminated. Fuse for fan 1 is blown. Found code P0480 in memory. Replaced fuse and blew 30 amp immeditely. Tried 30 amp circuit breaker and fan ran but breaker kicks out. Bad week for test equipment.. Amp c...
1999 GMC Savana 2500 5.0L Hesitation VIN: 1GTFG25M9X
Good afternoon people. I have this vehicle that boggs when trying to accel. Problem is intermitted. When client starts vehicle up and starts to drive ( client depresses throttle pedel about 2/3rds of the way down) the vehicle will hest. for about 3 to 10 secon...
1987 Oldsmobile Toronado Brougham 3.8L Poor Idle Quality VIN: 1G3EZ1132H
this is a car that has been coming to this shop for years. at some point we have replaced nearly everything. it came in for failed emissions. replaced injectors,ign cables,egr,cat. passed emissions wonderfully. now it has a high idle about 1200rpm. we have ver...
1988 Oldsmobile Cutlass Supreme SL 2.8L No Start VIN: 1G3WS14W8J
OK Folks, Got a STUMPER here. Replaced the crankshaft due to noisy rod bearing. Got the crank from AutoZone. Car ran when brought into shop. Now NO start. Cranks all day long. Have tried CSS, Module, Coils, Ignition Switch, ECM. All are KNOWN GOOD parts or NEW...
1995 Pontiac Grand Am SE 3.1L No movment in drive VIN: IG2NW55MXS
ok trany guys. this little grand am wont move in d4 or d3. but if you put it in D2, it will startout in second gear and if you manualy upshift, it will hit the other gears. when you come to a stop you need to put it back into D2 to get moving again. Input clut...

Fixes & Summaries for GM
Fix/Summary Answers
1992 Buick LeSabre Limited 3.8L Misfire VIN: 1G4HR53L3N
Thanks for all the replys...First of all, I incorrectly posted the two missing cylinders...They were #2 & #5...We did try a module and it did not solve the problem...Next we replaced the ECM and so far it runs fine...Thanks again...Dart
1993 Buick Skylark Custom 3.3L Poor Idle Quality, MIL Lamp on VIN: 1G4NM54NOP
Well here goes. This buick had a few different things going on. first and formost was the misfire. We had a bad tps sensor there was no voltage change when you hit the accelerator, we replaced that and the hesitation went away. The second issue was the misfi... Trouble codes: 26.
1995 Buick Century Custom 3.1L MIL Lamp on
Hi all. Thanks for all your help thus far. Customer hasnt returned as of yet, and I need to close this request. A lot of responses mentioned that the intake was partially plugged between the valve and the plenum. I am satisfied that it is clear since we have a... Trouble codes: P1405 (EGR solenoid 3 failure).
1995 Cadillac DeVille 4.9L Poor Idle Quality VIN: 1G6KD52B2S
after disconnecting throttle cable and verifying it wasnot the problem i checked the isc motor and idle switch,the part passed the tests,i opened it up and found the grease was like paste and the idle switch would stick,replaced with new component and returned...
1990 Chevrolet Lumina Euro 3.1L No start VIN: 2G1WN14T7L
Found the wiring was melted behind the power steering pump. Repaired the wiring and car runs great. Thanks to all who responded!
1993 Chevrolet G30 Beauville 5.7L balancer VIN: 2GBHG31K0P
I was hopeing that someone would had an easy way to find TDC from the original mark. But no one had any thing solid so I used the stop in the #1 spark plug hole. Thanks to everyone who responded.
1994 Chevrolet K2500 Suburban 7.4L 1-2 shift VIN: 1GNGK26N8R
Sorry I was so late to post the fix for this one and Thank you to all that sent a reply. Turns out, the actual fix/problem was something that not ANY manual would have pointed me to. Someone had pointed me to www.transbuilder.com which was a VERY helpful site ...
1999 Chevrolet Silverado 1500 5.3L No Start, Stall VIN: 1GCEK19T2X
Many thanks to all the respondents. Most agreed on either fuel pump module or wiring to or on the module. I have replaced the module and, as Devin from NE mentioned, the four wire pigtail. I greatly appreciate the NAPA number for the pigtail that Devin supplie...
2001 Chevrolet Express 1500 4.3L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1GCEG15W01
got my injector tester today. pulsed all the injectors without the harness on and got no spray still. awesome fuel pressure, awesome spark, starts with carb clean, relative new fuel pump, filter and new regulator...best i can say is if you ever open these uppe... Trouble codes: P0300, P0200, P0420, P1381, P0128.
2003 Chevrolet Express 1500 5.3L rack/pinion VIN: 1GNFG15T63
A few replies made it sound like I don't know what I'm doing. others were good suggestions. The dealer Rack/Pinion is Rebuilt not new, they don't offer a new unit. But it was the same as the a/c delco units, clocked off 1/4 turn. You can't reset the steering w...
2005 Chevrolet Classic 2.2L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 1G1ND52F25
Found faulty O2 sensor, vehicle was setting lean code, fuel trim out of normal range. O2 sensor reading at extreme. replaced sensor. also found TSB for computer reprograming for lean condition problem, reprogramed also. vehicle runs well, no further problems, ... Trouble codes: P0171 (system too lean bank 1).
2003 GMC Envoy SLT 4.2L Poor Fuel Economy, MIL Lamp on VIN: 1GKDS13S93
I want to thank everyone who replied to this request. The only thing that I was able to do before the customer picked-up the vehicle was to update the pcm. The customer said the light came back on a few days later, and that they would bring the vehicle back in... Trouble codes: P1523 (Throttle Plate Position), P0172 (System Rich Bank 1).
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