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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for June 10, 2005
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Open Help Requests for GM
Help Request Answers
1997 Buick Park Avenue 3.8L Poor Idle Quality, VIN: 1G4CV5219V
Hello everyone! This one has been giving us trouble for quite some time.Engine hard starting after hot soak, fuel pressure bleeding down. The fuel pressure was low & would drop right off when key was shut off, fuel pump was replaced as per diagnosis. fuel pre...
1993 Cadillac DeVille 4.9L Poor Idle Quality, Misfire VIN: 1G6CD35B7P
Customer complaint poor idle worse under load (when AC is on, in gear). Vehicle idle erractic misses at idle under load only when vehilce is warm. It takes up to 30 minutes to get the condition to to take place in the shop. On the road if driven for 5 minutes ...
2000 Cadillac DeVille 4.6L stabilitrac VIN: 1G6KE54Y7U
this caddy has had a reman rack installed in it at another facillity. since the replacement of the rack the "stability system active light" comes on and system activates at what would be considered hypersesitive. the problem did not rear its head until after t...
1993 Chevrolet S10 Blazer Tahoe 4.3L No Start, Poor Idle Quality VIN: 1GNDT13W2P
HELP!!! This one is kicking my behind. I'll spare the gory details. This truck will not start without starting fluid. When it doe run, it runs poorly. If I restrict the return line, pressure jumps but it still needs starting fluid. Deadhead pressure appears to...
1995 Chevrolet Camaro 3.4L Cooling Systems VIN: 2G1FP22S8S
We got in a 95 Camaro with a very odd intermittent overheat problem. Once driven hard so it is good and hot (not overheating) if you shut down the vehicle it will push antifreeze out the reservoir like it was overheating. We have tried a cooling system flush a...
1996 Chevrolet Blazer 4.3L tcc VIN: 1GNDT13W7T
This Blazer Has a intermitant Tcc no comand on from pcm. If I run it on the hoist It will comand on every time over 45mph. Go drive it on the road and sometime it will lock up somtime it won't. If I comand on with tech2 it will lock. and stay locked untill I c...
1997 Chevrolet Blazer 4.3L Mechanical VIN: 1GNDT13WXV
Oil will bleed out of dipstick tube without engine running. If outside temps get above 85f, Trans fluid will climb up the dipstick tube and leak to the ground. We replaced the engine because of a dead cyl. The customer authorized repairs and then ran into toug...
1999 Chevrolet Blazer 4.3L Misfire, MIL Lamp on, Lacks power loaded VIN: 1GNDT13W9X
Here we have whats turning out to be a nasty fiasco. This was brought in with complaint of hiss type noise when acclerating and lacks power on accell. We initially thought the obvious and went for the plugged exhaust theory but back pressure tested fine at sen... Trouble codes: P0300
1994 GMC Safari SLE 4.3L backfires VIN: 1GKDM15ZXR
Customer came in with this van last week and it had a melted coil.(the plastic coil housing around the wire terminal had actually melted down) He said he had had it replaced a year ago. Today it came back in, he says it stalled a couple of times yesterday and ...
2000 GMC Jimmy SLS 4.3L Hesitation, Cuts out VIN: 1GKCT18W9Y
car has bad hasitation on accell fuel press did not drop off car ran a little better with maf sensor upluged cust also states that gas gauge moves around alot but it has beeb doing that for a while the hasitation new problem and seems to be getting worse no co...
2004 GMC Sierra 2500 HD 6.0L converter VIN: 1GTHK29U54
Hello everyone. This truck has a metal pinging noise coming from bell housing area. Sounds like cracked flex plate. Noise only there when cold. flex plate & bolts replaced. Noise still there. Has anyone had any problems with tourqe converters making this noise...
2000 Saturn SC2 1.9L Unknown VIN: 1G8ZY1277Y
Hello Fellow Techs. Todays diagnostic dilemma comes from a 2000 Saturn SC2 1.9L DOHC engine with a 4 Speed Automatic Transmission. The vehicle had a used transmission installed by another repair shop, and the "Service Engine Soon" light is on with codes P0...

Fixes & Summaries for GM
Fix/Summary Answers
1996 Buick Park Avenue 3.8L dome lights VIN: 1G4CW52K4T
Well the dome lights are working with the replacement of the remote funtion actuator module, the dome lights go out in 25 sec., but the radio and exterior lights don't go out imediatly unless you open one of the other three doors. I am waiting for the customer...
1996 Cadillac DeVille 4.6L s.i.r. VIN: 1G6KD52Y3T
cars fixed and out the door. I decided to go with the 2 ohm resistor , (what could I lose)I was hoping to see a short or anything but an open, It stayed open even with the 2 ohm resistor in place (noting the shorting bars are in the air bag itself. Ward [...]...
1997 Chevrolet K1500 4.3L d3/d4 VIN: 1GCEK14WXV
i want to thank everyone for your responses. it really makes a difference. we went back through this tranny looking around, come to find out the li/rev. sprag in the bottom of the tranny was put together wrong.if the inner sprocket turns in both directions you...
1997 Chevrolet Camaro 3.8L Misfire VIN: 2G1FP32K1V
Marority rules again. I replace the coils (they all had cracks so why not) I found it easiest to remove the aluminum bracket with module/coil assy. and replace them on the bench. Especially when the bolts didn't want to come out of one coil. I had to grind the... Trouble codes: P0300 (Random Cylinder Misfire).
2001 Chevrolet Tahoe 5.3L Stall VIN: 1GIJEC13TE
Sorry for the delay but I think I can say this one is fixed! After replacing the bcm on this truck customer brought back for same stalling problem. So I got them to leave it with me and in the morning while on a test drive it stalled so I hit the record button... Trouble codes: 1416A.
1998 Saturn SL 1.9L High Idle VIN: 1G9ZF5288W
Thanks to all who replied. Any and all help offered is always appreciated. One suggested checking the PCV Hose. The one on this car was bulk aftermarket hose which was funky, but not leaking. Five suggested checking for intake gasket leaks, most of these s... Trouble codes: P0507 (Idle Control System RPM too high).
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