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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for March 18, 2005
International Automotive Technicians' Network (iATN) - Members Only
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Open Help Requests for GM
Help Request Answers
1995 Buick LeSabre Custom 3.8L No Start, Stall, MIL Lamp on VIN: 1G4HP52L7S
95 Buick Park Avenue after car sits and gets cold turn switch on and the voltage LED will not come on. The engine will spin over but will not start. After about 5 minutes with the ignition switch on, the LED will start to blink and the service engine soon ligh...
1992 Cadillac DeVille 4.9L No Start VIN: 1G6CD53B2N
after the module was replaced the vehicle started and ran for a few minutes and then was turned off... now the vehicle will not start again, however there is spark now but won't start, engine fires the odd time but will not run... cranks hard at times as if th...
1991 Chevrolet Cavalier RS 2.2L Surge, Stall, CODE 45 IN MEMORY VIN: 1G1JC54G7M
I hate to admit defeat at the hands of a Cavalier... Story begins one month ago...Car originally came in for a complaint of intermittent dying while going down the road. Could not duplicate concern so Tech that use to work here requested ICM & Crank Sensor on ... Trouble codes: 45 (rich exhaust)
1992 Chevrolet S10 4.3L dash and brake lights VIN: 1GCCS14Z5N
Having trouble with this one, when the brake pedal is depressed the dash lights come on, and with the parking lights turned on the brake lights will light up. Also the dash, radio lights and gauges bounce when the turn signals are on, more so when the left sig...
1996 Chevrolet Corsica 2.2L Hesitation, Misfire, MIL Lamp on VIN: 1G1LD5541Y
We have just replaced this engine with a low mileage (47k) used unit from a 1997 vehicle. The salvage yard is usually reliable and accurate but I'm beginning to wonder if there might be an interchangeability issue between a 2.2L in 1996 and 1997. The car idle... Trouble codes: P0335, P0341 (camshaft position range proformance)
2000 Chevrolet Blazer LS 4.3L trans VIN: 1GNDT13W8Y
hi, this is my blazer. a 4x4 non auto transfer case. when in reverse 2wd, something binds up and chatters in drive line. won't roll good backwards in nuetral. in drive it has late shifts, and slips if you accel hard in high gear. pulled rear drive shaft out of...
2002 Chevrolet Suburban 1500 LS 5.3L Misfire VIN: 1GNFK16T52
Car came in with a missfire. It had never had a tune-up, so we replaced plugs, wires, and all filters. It still continued to miss. Checked missfire data, showed cylinders #2 & 4 missing. Tested injectors, they all work. Checked compression, all had 130 psi. th... Trouble codes: P0300 (random missfire), P0302 (Missfire cylinder 2)
2003 Chevrolet Corvette Z06 5.7L No Start VIN: 1G1YY12S53
1999 GMC Yukon Denali 5.7L Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1GKEC13R0X
Hi there, The customer had it towwed in from another shop. They repaired what was supposed to be noisy lifters due to low oil pressure. My understanding is they replaced all lifters and the oil pump. They could not get it started and eventually called the cu... Trouble codes: P0339 (Crankshaft Position Sensor Circuit Intermittent), P0340 (Camshaft Position Sensor Circuit)
1992 Oldsmobile Cutlass Ciera S 3.3L Idle VIN: 1G3AJ84N4N
Hi guys! I got this car that has spin my head for a couple of days. The car has its engine rebuild for a piston knock. After putting the engine back the car fired up ok then after it warmed up and fan turns on the engine just runs rough and dies. Everytime the...
1994 Oldsmobile 88 Royale LS 3.8L P.S. pump VIN: 1G3HY52L4R
We replaced the pump and now it no longer works we get no power steering assist. This vehicle is equiped with the TFE actuater. We put the old pump back in and still no assist. We tested the TFE actuator and it works on the bench. We are getting power to the a...
1995 Pontiac Sunfire SE 2.2L Excessive Emissions VIN: 41SS839546
Hello, this is my own car. Having alot of trouble getting this to pass emissons. . The Limits are as follows. Idle 200 HC. and CO 1.00 Cruise HC 66 and Co at .37. When I first got the car 3 months ago the first thing I did was put a cat on it because the prev ...
1997 Pontiac Sunfire SE 2.2L cooling VIN: 3G2JB124VS
came in no heat inside gauge low, installed thermostate, work great for about 1 week. came back no heat, noticed fan staying on all the time. diagnosed computor faulty fix problem with fan. installed another thermstate (just incase first was faulty) left for a...
2002 Saturn L200 2.2L Misfire, MIL Lamp on VIN: 1G8JU54FX2
This 2.2 came in with a p0303 cyl 3 miss code. It does miss under a load. I can watch the missfire counts on #3 rise while 1,2 and 4 don't. To shorten a long story, I lifted the coil assembly up, hooked it up with plug wires to run it, verified that it ran the... Trouble codes: P0303 (Misfire cylinder 3)

Fixes & Summaries for GM
Fix/Summary Answers
1996 Buick Park Avenue 3.8L Intake Manifold VIN: 1G4CW52K2T
Iatn members, I received an overwelming response to my inquiry Thank You! I replaced the lower intake with an updated part per TSB. However I received information from David about a repair kit from FMSI Automotive Hardware Inc. 1-[...].They will only se...
1988 Chevrolet Celebrity 2.5L No Start VIN: 1G1AW51R2J
burnt wire on ign. switch connection dont know what caused it. lots of oil around the module connection. car is running now customer will report back to me. thanks for all the input.
1995 Chevrolet G10 Chevy Van 5.0L High Line 180-190
Well this one was a Triple wammer... I re tranx'ed the unit this morning with the new pump and VB & Harness off another unit, Pressures can now be controlled, but scanner still showed around 1 amp draw...aka should have approx 60 psi line...gauge still read 18...
1996 Chevrolet C1500 5.7L Hesitation, MIL Lamp on VIN: 1GCEC14M8T
It appears that the map sensor was restricted with crud. We changed it, replaced the o2 sensor that was flagging codes, and it's fine. Thanks for all the input, and teaching me something about scan data-
1997 Chevrolet Cavalier LS 2.2L theft lamp VIN: 1G1JF52T4V
Car has not returned yet, concensus was to reset with Tech II, scanner, thanks for all replys/help and will finalize as and when completed. Brian.
1999 Chevrolet Tahoe LS 5.7L intake,water pump VIN: 1GNEK13R5X
iused on this truck and all future vehicles prestones new antifreeze. will see how the results come about. thanks for all the reply's john
1999 Chevrolet Cavalier 2.2L No Start VIN: 1G1JC5248Y
I recieved a number of replies. I did not get it going.She has had so many problems she is giving up on it.Some of replies I recieved were for fuel. As I stated in post I removed fuel pump relay recoated cylinders and try to start it with propane this would el...
2003 Chevrolet Silverado 1500 HD LS 6.0L XM Radio VIN: 1GCGK13U93
This condition was a diffucult one to get answers and ultimately fix. The problem was not diagnosing the vehicle but rather purchasing the component needed. We were finally able to receive a XM Satellite Receiver and repair the vehicle. We spent numerous HOURS...
1999 GMC Yukon Denali 5.7L gear selector in drive or 3 VIN: 1GKEK13R1X
Thank you all for the info. Everything pointed to a teardown, so thats what was done and found a broken sprag. We were not sure if a complete teardown was nesassary, so thanks very much for the info., indecating that it was.
2001 GMC Sierra 1500 SL 5.3L MIL Lamp on VIN: 1GTEK19T01
We believe the truck is fixed. Customer happy so far, no miss, no rough running, mileage is good. The final straw and probably the fix was to replace the intake manifold gaskets. Manifold was near straight so we only replaced gaskets. The high miss fires of cy... Trouble codes: P0300, P0171, P0174.
1950 Other GM champion 245CID turn signal & park lamps
I want to thank all who replied I was very impressed with all the help , I didnt think there were so many studebaker people out there , I asked for a wireing diagram and I got two ,one on the lighting and one for the overdrive system thanks to James [...]...t...
1989 Pontiac Grand Am LE 2.3L Poor Idle Quality, Cuts out, Misfire, MIL Lamp on VIN: 1G2NE54D7K
Thanks for all to responded. I found valuable information on using a seperate set of wires to look at secondary ignition. A set of Dodge Neon wires were a perfect fix. When removing the ignition cover and setting upside down, I found something very interesti... Trouble codes: 35 (Idle Speed Incorrect).
1996 Pontiac Bonneville SE 3.8L upper intake melted plastic at e.g.r stove pipe VIN: 1G2HZ52K3T
thank you to all the iatn members who offered there help! the problem has been fixed, after installing another new upper intake and taking care of the customer we learned that another repair shop did the upper intake a month ago and forgot to install the metal...
2001 Pontiac Grand Am SE 2.4L No Start VIN: 1G2NF52T21
We'll call this a fix. I performed the relearn procedure and the car started and ran fine for two days. I explained to the customer that we problem was very intermittent and that I had three IATN members suggest ignition switch replacement. He thought it over ... Trouble codes: P1632.
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