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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for April 19, 2006
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Open Help Requests for GM
Help Request Answers
1999 Cadillac Catera 3.0L timing belt / heads VIN: WO6VRS2R8X
after buying the car from the customer we pulled the heads and sent them out. reassembled with new parts, did not have tool (the oe tool )for the timing belt so we used the timing marks and everseemed fine. we started the car, it ran for about 5 seconds and th...
1988 Chevrolet K2500 Cheyenne 5.7L Cuts out, Stall VIN: 2GCFK24K6J
This truck has spent more time at the shop then on the road the last 6 months it will run down the road fine turn around and come back and it will stumble like you lose a cylinder everything i have done helped but it would come back in two days with same probl...
1994 Chevrolet K2500 Suburban 7.4L 1-2 shift VIN: 1GNGK26N8R
This truck was brought in for hard shifting, it shifts hard in all gears but the 1 - 2 shift is a neck breaker. We checked for any codes and none were found current or history. Checked main line pressure and it is fixed at 160 - 175 psi all the time. All of th...
1994 Chevrolet Astro CL 4.3L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy VIN: 1GNDM15Z3R
blows black at idel o2 sensor 750 to 850 but scanner says its running lean,what am I missing thanks bob
1995 Chevrolet Camaro Z28 5.7L Starting VIN: 2G1FP22P8S
this car cranks for 10 to15 sec. befor starting. any help or comments would be appriciated.
1996 Chevrolet Corvette 5.7L cooling VIN: 1G1YY2259T
this car runs 210 degrees before the fans come on, it will run about 230 degrees at idle, the cooling fans come on low speed & i can turn them on high speed with scanner. are the fans supposed to jump to high speed at a certain temp? the cust. says that it usu...
1997 Chevrolet Corvette 5.7L back up lights VIN: 1G1YY22G7V
I can't get the back-up lights to work on this on. I have 12volts going through the back-up switch and the relay has 12volts at terminals 1 and 5 with the back-up switch open or closed. I am not getting a ground signal to the relay on terminal 2 , when I groun...
1997 Chevrolet Tahoe LS 5.7L axle bearing VIN: 1GNEK13R6V
Is anyone aware of something I'm missing here? We see a lot of these trucks but haven't seen a problem with leaking axle seals in general. Help - I can't keep doing these free every 10,000 miles.
1997 Chevrolet Astro 4.3L Pedal feel, brake response VIN: 1GNDM19W3V
This van has a slow brake response at high speed. The problem is intermittent, but when it occurs, it is above 30MPH. When it occurs, the pedal nearly hits the floor, the van slows 1/2 rate, the pedal pushes back toward the normal position and the van stops pr...
1998 Chevrolet Camaro 3.8L Misfire VIN: 2G1FP22KW2
This one is being a pain, has a miss on cyl # 6 at idle and up to about 1400 rpm then it levels out. Fuel pressure is a little low for this car but the only cyl it is affecting is # 6 The intake gaskets were in bad shape, but didn't fix the problem. Has anyone... Trouble codes: P0300 (misfire detected)
2000 Chevrolet Corvette 5.7L power steering VIN: 1G1YY32G9Y
Customer complains lack of p/s assist after several hours of driving, then ok after cooling off. We are unable to confirm and unsure whether to procede or send customer to a dealer. If anyone has run into this particular problem, please let us know. Thanks
2001 Chevrolet Impala 3.4L poor power cruise sp VIN: 2G1WF52E51
New Problem for customer Bought vehicle new consern is when driven at cruise speed 50 65 mph steady throttle engine has 0 -2 inches of vacuum and will only accelerate when you really push on the throttle peddle ... very Doggy response we checked fuel preasur...
1989 Geo Metro LSi 1.0L engine VIN: JG1MR2160K
it useds to do the same every once and a while before the overhaul. now it burns a qt. of oil after just 5 miles of driving, just wondering where or how it could be sucking the oil through the cylynders.
1993 Geo Tracker 1.6L No Start VIN: 2CNBE18UOP
need help please. got this tracker that has no fuel or spark. checked all fuses and all good. first let me say that i cant get any codes from ecm. i can ground the blue wire coming out the ecm relay and all relays click in. i did this and it fired up but only ...
1994 Oldsmobile 88 Royale 3.8L No Start VIN: 1G3HN52L8R
My first post to IATN for help was very surprising of the amount of help offered, and indeed a real fix was determined from the help received. Thanks to all who helped. Now I have another real bad problem with a 1994 Olds. 88, 3.8L, vin code (L). This vehicle...
2002 Oldsmobile Intrigue GL 3.5L MIL Lamp on VIN: 1G3WS52H12
Hello, I have this Olds Intrigue that came in with the MIL light on. Code P0410, I checked for bulletins and found 04-06-04-037, water in Air Pump. The motor was rusted tight. I replaced the pump, inlet hose, cleaner and shroud. The customer took the vehicle a... Trouble codes: P0410
1996 Pontiac Grand Am GT 2.4L Misfire, MIL Lamp on VIN: 1G2NW12T8T
Hi to all..I am asking about a repetitive problem that we seem to begetting on this car.Ignition system components such as coil,tower ass.,sometimes plugs. system seems to burn out coils quiet regularly.all driver circuits are stable and electrical system is g... Trouble codes: P0300
2001 Pontiac Grand Am SE 2.4L Misfire, MIL Lamp on, HIGH IDLE VIN: 1G2NE52T31
I am obtaining recoccuring continous fault codes P0300,P0302,P0502.I have an intermittent slight misfire at idle only; that i can feel. I have verified misfire counts present with scan tool on cylinder 2. My fuel trims look good with no vacuum leaks. The idle ... Trouble codes: P0302 (cylinder 2 misfire), P0300 (random misfire), P0502 (vss circuit low)
2003 Pontiac Grand Am SE 3.4L Surge, MIL Lamp on VIN: 1G2NF52E83
Hello all! Having trouble with a pretty standard code--P0172, system rich. Here is the freeze frame: Calc. load--16.0 ECT--192 STFT--3.1 LTFT--(-)24.2 MAP--20 in/hg rpm--1764 airflow--23.77 grams/sec TPS--8.2 Current data shows rich at idle and 2500 rpm. MAP... Trouble codes: P0172 (system lean)

Fixes & Summaries for GM
Fix/Summary Answers
1978 Chevrolet Camaro 5.7L race car overcharging VIN: 1JTRN5522R
thanx I got 21 replies by the time i got in thismorning IATN people should rule the world after we get done fixxing cars I saw an alt switch from summit racing with alternator wiring cut on it $30.00. by the way I run a 1/4 mile left turn dirt track Baronarace...
2000 Chevrolet Cavalier 2.2L MIL Lamp on VIN: 1G1JC1245Y
thanks for all the replys, most seemed to lead me to replacing the converter with an 'o.e' gm converter, since i figured that i'd already covered everything else i figured i had nothing to lose, that did the trick, post oxygen sensor readings were considerably... Trouble codes: P0420.
1993 Oldsmobile Bravada 4.3L No Start, Stall VIN: 1GHDT13W5P
thanks for your help the alarm was killing the fuel pump circut disconected the alarm and every thing is ok thanks again
2001 Oldsmobile Alero GL 2.4L No Start VIN: 1G3NL12T4I
Joe [...] hit the nail on the head, Security system reset. The vehicle did not have the owners manual, but Joe was kind enough to send me the procedure. After reset it took about 5 minutes of driving for it to be happy. Thanks Dave Trouble codes: P0621, P1632.
2000 Pontiac Grand Am SE 2.4L No Start VIN: 1G2NE52T2Y
I Think I fixed it! Thanks for all the replies they were most helpful. On Monday morning I went in and started from the begining.I verified spark on all cylinders,checked resistances and voltages from all coils.check compression,re-checked fuel pressure and de...
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