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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for October 13, 2006
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Open Help Requests for GM
Help Request Answers
1994 Cadillac Fleetwood 5.7L starter VIN: 1G6DW52P9R
located and monitored theft deterrant relay,found that during no crank condition the central control module does not ground the relay,tested key switch for ohms reading at the two wire connecter at steering column base,tried two different keys,they both read t...
1988 Chevrolet S10 Blazer Sport 2.8L Cuts out, Misfire, MIL Lamp on VIN: 1GNCS18R4J
Please help!!! Hi gm techs,i have this 1988 blazer 2.8l when accelerating it cuts out just like you have bad ignition module not advancing the timing.Checked all ecm pin voltages,EST signal on vantage pro scope was about 3.8v.Replace module now voltage is 4.4 ... Trouble codes: 45 (rich exhaust)
1994 Chevrolet Caprice Classic 5.7L Starter VIN: 1G1BL82P2R
The car has driveability issues: Bucking and stalling. That is before it just stopped cranking. Once the MAF Sensor was put on the car just quit. NO cranking over and no sound at the starter solenoid or sound at the injectors. I do have a check engine light th...
1996 Chevrolet C1500 Cheyenne 4.3L Hesitation, Cuts out, Stall VIN: 1GCEC14W1T
vehicle stalls when giving full throttle thur gears, gets worst longer you drive. when not giving full throttle seems to do fine. no codes. checked fuel pressure ok, checked compression ok, old cat was rattling, checked muffler for blockage ok, checked backpre...
1997 Chevrolet Blazer 4.3L abs VIN: 1GNDT13W6V
We have driven the vehicle with the scanner on it and no codes have been set and the data all seems to be ok. WE checke the speed sensr in the transmission and it appeared to be ok. I do not want to have to take a chane on the module so if anybody has any idea...
1998 Chevrolet Cavalier 2.2L MIL Lamp on VIN: 1G1JC5241W
This cavelier came in with mil on and p0335 and p0342. the customer said that every now and then the car would cough while starting. we were never able to experience any problems with it. we could find no wiring or connection problems. since the parts are rela... Trouble codes: P0335, P0342
1999 Chevrolet Blazer 4.3L climate control VIN: 1GNDT13W4X
I have this 99 blazer here. The electronic cliamte control is inoperative. No power to any of the functions except the reciculate light comes on sometimes. I have checked fuses. attempted to scan body control with no luck. I am using a modis and do not see a o...
2000 Chevrolet S10 2.2L No Start, Hesitation, Cuts out, Stall VIN: IGCCS1446Y
this truck blows the fuse for ecm1 not ecmb. ecm1 is the 15amp fuse that blows i installed another computer had it flashed and that fuse keeps blowing . i have fixed trucks in the past with a fuel pump because the old one was giving off so many amps that it wo...
2001 Chevrolet Silverado 2500 HD 6.6L Misfire VIN: 1GCHK23111
this truck has a bad fuel knock, and smoke, fuel psi ok, but can"t run a cylinder balance test though scanner,is there another way i can determine what cyl. is missing? has anyone run into this before, no one has any experence on these engines around here.
2000 Oldsmobile Intrigue GX 3.5L Stall, BLOWS FUSE AND DIES VIN: 1G3WH52H6Y
vehicle blows fuse for pcm and bcm only while driving in forward, c/s it will never blow fuse in reverse, no codes found, although scanner shows park/ neutral switch is not reading properly, dash display is correct but scannner show reverse when in 2nd gear lo...
1994 Pontiac Grand Am SE 2.3L Poor Fuel Economy VIN: 1G2NE5535R
hello techs, this one has been to 3 other shops for running bad. after fixing wiring problems and replacing coil cover car runs fine. problem is act and ect are both stuck at 304 degrees by my snap-on scanner. no codes for this. i have checked all wiring for s...
1997 Pontiac Sunfire GT 2.4L Poor Idle Quality, Misfire VIN: 1G2JD12T5V
Vehicle came in on the hook. Engine shakes really bad and stalls. Fuel pressure is good, compression is at 125 to 135 on all cylinders. Cylinders #1 and #4 have no spark. Tested Ignition coils, Ignition control module, Coil and module housing on this vehicle h...
1998 Pontiac Sunfire SE 2.2L No Start, Cuts out, MIL Lamp on, LONG CRANK VIN: 1G2JB1248W
Complaint of long crank at times with check engine light.Happens cold or hot.sets code 335 and 342 w/ freezeframe info showing rpm super high (over 9000),and cam and crank resyncs showing up.when problem occurs engine kicks back like a timing issue. wiring tes... Trouble codes: P0335, P0342
2002 Saturn SC1 1.9L Misfire VIN: 1G8ZN12832
this car came in with a miss about 2 mos. ago. our other shop did tune up was ok for about a week . came back with chec eng lite po301 then they sent it to me. i check for spark ok ichanged plugs put in what it called for (its not what they had in there i can'... Trouble codes: P0300

Fixes & Summaries for GM
Fix/Summary Answers
1996 Buick Riviera 3.8L No battery charge VIN: 1G4GD2215T
Well after 3 different alternators 1 being AC DElco there was no change. I was able to full feild the alternator manually which led me to believe that the ecm was the cause. The customer is on his way to trade it in. I appreciate all the help and cannot wait t...
1990 Chevrolet Lumina 3.1L Hesitation VIN: 2G1WL51T3L
On this car I ohm checked the the injectors and found three of them to be bad. I replaced all of them with a updated style.It fixed the tip in hesitation as well as the high h/c 's.
1994 Chevrolet K1500 5.7L Axle actuator VIN: 2GCEK19KXR
Truck is fixed and gone. Thanks to Chuck, Eric, Antony, Willaim, [...] res...
2002 Chevrolet Express 3500 5.7L Misfire, MIL Lamp on VIN: 1GBHG31R62
frist and fore must THANKS for the replys! must of you were right, the cap on the distributor was nasty inside but never got to get it to misfire!the screens on the cap doesn,t allow air in, corosion builds up causing it to misfire! again thanks for the input!... Trouble codes: P0101 (Mass air flow curcit out of range), P0300 (Random Misfire).
1996 GMC K1500 Sierra SL 4.3L no start VIN: 1GTEK14W8T
After considering everything I had tried and tested I decided to go with a gut feeling that plug voltage was too low even though my k.v. tester showed voltage on crank. I tried to get my inductive timing lite to work on the plug wires it would not,so I got a s...
1997 Pontiac Sunfire SE 2.4L Ignition switch VIN: 1G2JB5248V
Thankyou to all who replied to my help request.What I ended up doing to get the neccessary shifter travel on this car was to loosen and slide the console forward about 1/4'.The customer then recalled that the car had been broken into at some time and had messe...
2000 Saturn SL2 1.9L Misfire VIN: 1G8ZK5279Y
Well as I was being told by Thomas, Marty, Nicholas and Christopher... Replacing the module and coils with dealer parts would and did fix it. (I actually had the wreckers send another one because of customers finances, (at that time they tell me they (wreckers... Trouble codes: P0340 (Cam Shaft sensor), P0341.
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