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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for January 20, 2007
International Automotive Technicians' Network (iATN) - Members Only
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Open Help Requests for GM
Help Request Answers
1994 Cadillac Eldorado 4.6L Poor Idle Quality, Surge VIN: 1G6EL12Y9R
car starts up and idles rough and seems to run very rich and this symptom ocurs; the idle speed motor "ratchets/clicks" and tries to raise and lower the idle it moves in and out and the engine runs very rough if you hold the throttle open for a period of about...
1998 Chevrolet Blazer 4.3L security VIN: 1GNCT18W7W
Intermitten start and stall security light flashing, sometimes will start and run but security light will stay on. Scan computer system P1631,B2960. I have read T.S.B. for B2960 code and checked torque and connections on connector C211 and pass-lock sensor- ap...
1995 GMC Sonoma SLE 2.2L Misfire, runs on #1 only VIN: 1GTCS1940S
This one is a puzzler . It will consistently run on # 1 cyl and often when first starting ( only after sitting 1/2 hr or more ) will fire on at least three cyls for a very short time ( just the initial firing - won't actually run any length of time ). When run...
1999 GMC Jimmy SL 4.3L Passlock ID VIN: 1GKDT13W4X
Hello everyone, I am almost ashamed to ask this question as I am a 20 year GM tech and you would think I would know, but here goes. I cannot find any where GM tells me how to tell if a system is Passlock 1 or Passlock 2. I need to know, am installing a start s...
1999 Pontiac Montana 3.4L Cam Shaft VIN: 1GMDX03E2X
Engine died while driving. I am a Ford Engine Tech and need a little info regarding this 3.4L OHV engine. I have checked this out a little for a good friend and found a broken camshaft. His oil light had been coming on at times for a while. Is this engine junk...

Fixes & Summaries for GM
Fix/Summary Answers
1997 Chevrolet Astro 4.3L No Start VIN: 1GNDM19W3V
I would like to thank all 28 who replied, most of whom said replace the fuel pump. It was the fuel pump. It made me nerviece to replace a $500 pump, when it was puting out almost 60 psi. Many of you wrote that it takes 62 psi min. When I was done it did have 6...
2004 Chevrolet Classic 2.2L Gauges/Dash Lights/Blower Motor VIN: 1G1ND52FX4
Well, we replaced the ignition switch and it has been almost a week with no complaints or reoccuring codes. thanks to all who responded.
1999 Pontiac Grand Am SE 3.4L code c1243 VIN: EOXM810092
looks like the pump was bad. replaced pump and belt and it works like new. thank you for your help. iatn is the best.
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