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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for November 16, 2004
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Open Help Requests for GM
Help Request Answers
1998 Buick Century Custom 3.1L Surge
HI We have a vehicle here that wants to surge at cruising speeds. the mass air flow is showing 0 hz. at all times, of course we tried a new one to no avail. did a wire test, all wires tested to proper specs. even the reference voltage. wires were also tested t...
1991 Cadillac Allante 4.5L ride control VIN: 1G6VS3384M
Hello fellow techs. I have this 1991 Cadillac Allante that came in with a Service SDD System displayed in the information center. SDD stands for Speed Dependent Dampening. This car has the wires that go into the top of the struts. This car is in immaculate con...
1992 Cadillac DeVille 4.9L door locks VIN: 1G6CD53BXN
I got this car with inoperative power locks, it holds the lock motors in the unlock position. If you push the switches to the lock position, it will cause the motors to run and try to unlock, causing a battery drain. This thing is driving me nuts, had it in ab...
2002 Cadillac Escalade 6.0L Temperature Control VIN: 3GYEK63N12
This truck was in a front end collision and has been repaired. Now the automatic temperature control is irratic. It acts as if the temperature blend door is swinging from hot to cold in a contstant cycle no matter where the temp. selector is placed. The temper...
1987 Chevrolet R10 Scottsdale 5.0L turn signal flasher VIN: 1GCDK14H4J
customer fails safety inspection for no turn signals/funny lighting at rear of truck. BTW it has aftermarket trailer light wire harness "installed". I spend 3 hours replacing & repairing wires to tag light, trailer harness, R & L lens housings, inc'l new bulbs...
1994 Chevrolet K1500 Cheyenne 5.7L backfires VIN: 1GCEK14K6R
I need some real help. I've got this truck that will backfire through ex. while driving. I can't get it to do under a power brake load . While driving easy its ok but you can push the cruise on and it will blow the muffler off like clockwork. I have no codes,b...
1996 Chevrolet Blazer 4.3L Misfire, MIL Lamp on VIN: 1GNDU67W7T
Customer brought to us after a used engine installed. #6 misfiring always, a few other random misfires under load.(#6 scope pattern looked like you see with a cracked plug insulator) Compression fine(190). Torn plug wire boot at cap,burn marks on wire,internal... Trouble codes: P0306
1999 Chevrolet Cavalier 2.2L hard crank VIN: 3G1JC5246X
Hello group, this cavalier will run like a brand new car, when it's running. Starting it is a different story. It kicks back on itself and pops through the intake like the firing order is wrong or the timing is way out, then it starts and runs like a top. Smoo...
1999 GMC Jimmy SL 4.3L transfer case VIN: 1GKDT13W5X
Hi guys. This thing is driving me nuts. turn the key on or start it, it doesnt matter. transfer case control module starts clicking randomly like morse code. Checked for codes= no fault codes retrieved. 4x4 seems to be working properly. diconnecting transfer c...
1999 Oldsmobile Alero GL 3.4L Poor Idle Quality, Stall, Poor Fuel Economy, MIL Lamp on VIN: 1G3NL52E4X
Intermitent Mil and log of codes noted, just wanted to know for sure before replacing EGR. Any personal insite would be much appreciated. Trouble codes: P1404, P0404, P0101

Fixes & Summaries for GM
Fix/Summary Answers
1992 Buick Roadmaster 5.7L Surge, Stall VIN: 1G4BN5375N
cUSTOMER HAS NOT BEEN BACK IN BECAUSE OF ILLNESS. Suggestions included looking for more vacuum leaks. Fuel pressure problems. Checking to see if TCC was on. Thanks for the suggestions. If he comes in I will let you all know what was really wrong with it.
1993 Buick Skylark Custom 3.3L No Start, Cuts out, Stall VIN: 1G4NV149PC
customer would not pay to replace the pump and sender, I believe that was the problem. Thanks for all the responses. It is very similar to a pump sender problem I saw in the in the archive
1999 Buick Park Avenue 3.8L eng. VIN: 1G4CW52K1X
I owe a huge thanks to all who responded but especially to Kent from Florida. It's a great idiea to make a special tool from old spark plug and long thread 1/4 x 20 bolt and 3 nuts. I think with this tool real easy to find if any rods inside the engine are ben...
1996 Chevrolet Express 1500 5.7L fuel gauge VIN: 1GBFG15R4T
Special thanks to Bill, Lester, William and Todd for taking the time to help. I did some checking and found out that this fuel tank has no baffles inside and does not require any. We ordered a brand new tank and it had no baffles, and there are no baffles avai...
1997 Chevrolet C1500 4.3L Misfire VIN: 1GTEK14W8V
the fix for this pick up is the cam position retard was of -14 degre. i slot the distributor bracket and i turn forward the distributor and now the distributor have 0 degre ,and the vehicule don't have the misfire between the 3 and 4 cylinder. Thank to all of ... Trouble codes: P0300.
1997 Chevrolet Lumina 3.1L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 2G1WL52MV9
Sadly I must report that I have been defeated on this one. It's not from a lack of trying but this fix eludes me. I haven't been beaten up this badly in many many years. I tried another ECM, checked and cleaned grounds, checked oil pressure (normal), checked... Trouble codes: P0300 (random cylinder missfire).
1999 Chevrolet Tahoe 5.7L No Start, Cuts out
came in monday morning and car started right up. Ran all day with no problem. Security light now stays on all the time. Tried clearing and accessing codes but could not do it with snappy,Customer picked up car late last night, started right up and guess what? ...
2000 Chevrolet Silverado 1500 5.3L hvac VIN: 1GCEK19T6Y
Hi guys received a couple 0f replieds letting me know that the actuator has to be in position in order to work at a predetermine range. Also they told me I would have to get another actuator but I went against all odds and centered the actuator by putting volt...
1992 GMC Jimmy SLE 4.3L pedal creeeps to floor VIN: 1GKCS13W3N
replacing the dump valve fix the problem thanks guys
1996 Pontiac Grand Am SE 3.1L no start VIN: 1G2NES2M2T
After checking with the dealership, about the pass key system, found this vehicle comes with the sensor in the ignition tumblers. Checked all the wiring and could only come to one conclusion... Ignition switch... Replace switch, and vehicle starts and runs... ...
1997 Pontiac Trans Sport 3.4L speedometer VIN: 1GMDX03E1V
Though the replies were helpful to a degree, the net result was all data from VSS was correct at all times checked at the PCM, I can only conclude that without sufficient input data from the ABS system that the PCM does not indicate speedo until a set amount o...
1999 Pontiac Grand Am GT 3.4L Hesitation, Surge, MIL Lamp on VIN: 1G2NW52E9X
Replaced PCM as suggested. Found Cam sensor signal wire and ground wire bare at sensor. Still no power to cam and crank after new pcm Traced all pcm power inputs. All supplying good power. All grounds good. Supplied Ign + from alternate source to cam and crank... Trouble codes: P0327.
2003 Saturn Ion-2 2.2L data link VIN: 1G8AZ52FX3
blow cig lighter fuse easy fix if you know where to find the fuse, its on the left side front of the center console, we still could not acsess codes, CANdi required
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