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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for April 22, 2008
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
1991 Cadillac DeVille 4.9L info center,heating / ac cotroler VIN: 1G6CD53BOM
Has any body seen this type of problem and if so what was the fix for this. Thanks
1999 Cadillac Seville STS 4.6L No Start, MIL Lamp on VIN: 1G6KY5490X
After replacing the engine, started vehicle and a code (po102 MAF sensor low input signal) was stored and the check light is on. The MAF sensor is reading 106 hertz @ idle and with ignition on and it is supposed to be more than 1135 hertz @ idle. So i checked ... Trouble codes: P0102, P0101
1977 Chevrolet K5 Blazer Custom Deluxe 6.6L rings VIN: TKR187FJ13
This full size blazer with a 400 c.i. engine has a blown head gasket. Compression on cyls 3 and 5 are 30 psi. After removing head I found broken gasket between both cylinders. Does anyone know an easy way to see if the rings are good with the head off. The cyl...
1995 Chevrolet K1500 Suburban 5.7L Poor Idle Quality, Cuts out, Stall VIN: 1GNFK16K8S
hey guys thanks for all your help in advance. i got this 95 suburban that keeps dieing on us. as you can see in my repair history we have thrown about every part you can imagine on this thing. when you start it up it seems to run fine, then when you let it idl...
1997 Chevrolet Cavalier 2.2L ignition VIN: 3G1JC5249V
CAR WAS TOWED IN , BUT AS USUALL STARTED RIGHT AWAY , CHECKED CODES HAVE P0342A camshaft position sensor circuit low voltage , &P0335A CKP CIRCUIT . these are recurring codes ,had a lean mixture code ,but the fuel filter was plugged solid ,replaced it and that...
1997 Chevrolet Blazer 4.3L pcv valve VIN: 1GNDT13W0V
hello all out there in iatn world. thanks in advance. i wouldn't have posted this except i now know of two of these vehicles with the same problem. i replaced intake manifold gaskets on both of them and now they have the same noise. the noise is definately com...
1998 Chevrolet Malibu 3.1L No Start, Poor Idle Quality VIN: 1G1ND52M4W
hi every one recieved vehiclle a couple of days ago checked out all sensors that have been changed prior to me recieving car. customer has been trying to fix this car for 10 years now has given up and booked in to us . computor has been flashed years ago and i...
1998 Chevrolet Tahoe 5.7L On Star VIN: 3GNEK18R5W
Hello all. This customer is a gadget freak and has purchased a complete dealer install On Star system that is the correct unit for this YMM vehicle. Before installing it he attempted to start the service and found that 1998 On Star systems are obsolete and ino...
1998 Chevrolet Lumina 3.1L Front Brakes VIN: 2G1WL52M2W
Vehicle came in for brakes hanging up and no brake lights. Turn signals worked, third eye worked. Found front brakes low and a bad turn signal switch. Rotors to thin to turn but no blue color everything inspected fine. Coud not get brakes to stay applied. Repl...
2000 Chevrolet Silverado 1500 5.3L transfer case VIN: 2GCEK1975Y
the transfer case stays in 4 hi. Sets code c0323 and code c0387. When push the 2 hi button on the switch in the dash you can hear and feel with your hand the encoder motor run and the switch on the front differential engage. Replaced the dashboard switch but s...
2004 Chevrolet Malibu LT 3.5L Compressor VIN: 1G1ZU54874
Customer stated no cold air from A/C system. Connect guages, 80 PSI on both the high and low sides (good charge(. Black light system, no evidence of a leak. Turn on the A/C system, the compressor engages, runs quietly, no change in either pressure. After runni...
1970 Oldsmobile 442 455CID Poor Idle Quality, Misfire VIN: 344670M371
this problem is likely headed for the older generation of techs, this is not to say that a younger tech cannot help me because one thing i have learned in this buisness is that if your humble enough you can learn from everyone.this 442 has an original engine b...
1994 Pontiac Trans Sport 3.8L Hesitation, Cuts out VIN: 1GMDUO6L2R
customer came in they had already replaced map sensor plugs and wires and an o2 sensor scanned car has no codes drove and it runs like it has a clogged exhaust they was told the converter was bad so i replaced cat still no change has no power at about 45 55 bu...
1998 Pontiac Grand Prix GTP 3.8L MIL Lamp on VIN: 1G2WP5216W
Did some ac work on the vehicle. Replace ac compressor. Came back 2 days later with a p0171 code. Scanned data and found the o2 sensor not moving. LT fuel trim was +16. Replaced o2 sensor and cleared code. Light came right back on. LT is still +16. Checked for... Trouble codes: P0171
2002 Pontiac Grand Am GT 3.4L no crank VIN: 1G2NV52E52
hello , car cae in on the hook ,with a no start or crank problem. customer stated that he was driving and the check engine light started flashing and then he decided to pull over and stop. when he did the car would not crank or start again. i checked the pur...
2003 Pontiac Vibe 1.8L drivetrain VIN: 542SL62813
engine viberation

Fixes & Summaries for GM
Fix/Summary Answers
2003 Cadillac CTS 3.2L cam cover VIN: 1G6DM57N73
Thanks for the replies, TSB, new valve covers, check dealer pricing. Decided to refer this one to the dealer, sounds like too many unknown possibilities could make this the nightmare I don't want to deal with. Customer was OK with that, thanked us for being ...
1987 Chevrolet V10 Custom Deluxe 5.7L fuel tank inop VIN: 1GCEV14K3H
Hello iatn tech's; Sorry it has taken so long to close this but I needed to give customer time to add fuel to this truck a few times to see if he really was having a problem. In my help request I stated the left tank wouldn't fill properly {burps back}. I also...
1993 Chevrolet Cavalier RS 2.2L Stall, ICM failures VIN: 1G1JC144XP
We got it! Kinda wierd to. I went to the ICM and check for power and ground. I was finding a 9 volt voltage drop on the ground side of the ICM to the back side ground post on the trans bell housing bolt. The other ground post on the front of the trans bellhous... Trouble codes: 42 (est grounded or open).
1995 Chevrolet C2500 5.7L Stall VIN: SORRY NO V
First of I would like to thank all who reply.The fix was loose connection at relay & a ground to frame loose. Trouble codes: 54 (fuel pump relay).
2000 Chevrolet Astro 4.3L Excessive Emissions, Misfire VIN: 1GNDM19W9Y
2000 Chevrolet C2500 5.7L Hesitation, Cuts out, Stall VIN: 1GCGC23R6Y
A great place for us techs who temporarily loose sight and sanity. Truck has been fixed. Thanks also to all who actually helped with another vehicle not related to this one. Any way, I just couldn't figure out why the MAF V and hg readings were in range and ca...
1996 GMC Sonoma SLE 4.3L Surge, Cuts out, Misfire, MIL Lamp on VIN: 1GTCS19W9T
12 replies to this one, Ideas were kinda across the board. Lots of fuel problems, leaky regulators, Bad injector poppets, Fuel pressure not holding ect. Also recieved advice on testing the o/2 sensor heaters. Someone said the EGR valve can be installed backwar... Trouble codes: P0147.
2002 Pontiac Grand Am GT 3.4L Key doesn't turn VIN: 1G2NW52E22
Thanks to all who helped. Everyone said that the switch was the culprit, which it was. We replaced the switch, and did the re-learn procedure, and everything works... customer happy. Thanks again to all.
2003 Pontiac Sunfire SE 2.2L instrument cluster VIN: 3G2JB12F13
well as every one suspected it was the pass key cylinder , replaced it and that solved the problem , it appears that these are a common problem and should be the first thing to check . thanks again guys
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