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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for October 13, 2005
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Open Help Requests for GM
Help Request Answers
1997 Buick Park Avenue 3.8L Charging VIN: 1G4CW52KXV
Hi out there this car has a vary weard and intersting problom the cust stated that when he whent to drive his car it started a little had but did not think any thing of it and then when he left the store he was at he whent to stop and the radio lost power and ...
1995 Cadillac DeVille 4.6L tcc VIN: 1J6KF52Y3S
This car has a code po39. I have a6 volt drop on the groun of the TCC but I dont know where the ground is located out of the black box. What ground is used for TCC?
1997 Cadillac Seville SLS 4.6L Stall VIN: 1G6CS52Y6V
GOOD DAY TECS! This caddy is got me in a jam I need HELP please! Came in for stalling condition at idle doesn't happen all the time. IAC value was replaced, didn't fix it. All sensors are with in range. Hooked up solus and took a snap shot right before it stal...
1984 Chevrolet S10 2.8L Stall VIN: 1GCCS14B1E
This thing is killing me. I know it is something STUPID I am missing. Have installed parts as listed. Between 40 and 55 mph this thing will just die. It starts right back up. It only seems to happen during speeds mentioned. ( Have tried to tell customer to avo...
1988 Chevrolet K1500 Cheyenne 5.7L No Start, Stall VIN: 1GCDK14K4J
good afternoon to all, please help! workin on a 1988 chevy 1/2 ton that is going through fuel pumps faster than it goes through gas! it is now possibly going to need its 9th pump. we got this truck after the other place got sick of the first 4 pumps going out....
1992 Chevrolet K1500 Cheyenne 5.7L cooling system VIN: 1GCEK14K0P
drive this unit 1.5 miles the temp gauge goes to red at 260. shut unit down, you can hear poping in heater core, incidently heater does get hot also,set for five or 7 minutes then start it up it cools off to 180 and will go as far as you want. when it gets hot...
1995 Chevrolet S10 LS 2.2L Spark knock VIN: 1GCCS1942S
This truck has a problem with spark knock. It knocks horrible at cruise speeds above 60mph. Tip into the throttle while it's knocking and the knock goes away. As soon as it catches up it begins knocking again. I can't seem to find the issue. I have to run prem...
1996 Chevrolet S10 LS 2.2L Poor Idle Quality, Hesitation, No Power VIN: 1GCCS1942T
The customer came in a week ago and said as he rounded the corner leading to his street his truck died. He then restarted it and from that time on it ran very rough and no matter how open the throttle is rpm does not increase. I proceeded to change the fuel fi... Trouble codes: P0108
1997 Chevrolet C1500 5.7L Transmission VIN: 1GTEC14R9V
Greetings Fellow Techs, Got an interesting one in the shop today. 1997 Chevrolet C1500 2WD truck. Customer complaint of a knocking noise from underneath after a short drive and warm up. Went for a road test and approx after 2 miles of normal driving a knocking...
1998 Chevrolet Blazer 4.3L 4 wd VIN: 1GNDT13W2W
This rig came in with no lights on the 4WD switch(3 button type). I attempted to pull codes but nothing would flash. I stole parts off another 98 that were known to be good, but to no avail. I put the questionable ones in the good rig and they work. I crawled...
1999 Chevrolet C2500 5.7L No Start VIN: 1GTGC24R2X
This vehicle when running runs good, but some times it wont start,check fuel pressure at no start and is 55psi. You can relieve pressure(maybe air, but it has no leaks outside of tank and pump is from dealer) at schrader valve and it will try to start, keep re...
1999 Chevrolet Blazer 4.3L remote door locks VIN: 1GNCT18W7X
Used car lot brought me this S-Blazer to reprogram new key fob. I can go though the relearn procedure manually or with Tech2, and get the locks to lock and unlock after 12 seconds, verifying that the signal was recieved. However the remote still does not work....
2000 Chevrolet Blazer LS 4.3L door locks,alarm VIN: 1GNDT13W2Y
guys&girls i need some help with my wife's blazer,when you park and use the power locks to secure the doors and come back and open with key the alarm and lights sound,truck did not come with keyfob,if you unlock the pass side first no problem.also with the doo...
2002 Chevrolet Trailblazer LS 4.2L Hesitation, No power VIN: 1GNDS13S42
Hello everyone, I'm stumped big time by this one. I looked every where for info on this vehicle and there's not to much out there so here I am. The customer complaint is that the vehicle has no power. We test drove the vehicle to verfiy the problem. It has abs...
2003 Chevrolet Silverado 1500 4.8L Cuts out VIN: 1GTEC14V63
truck came in on tow truck, driver info sensor read loss of engine power, truck will idle but won't rev up, when you shut off key and take out of ignition the engine still runs and the dash lights and warning lights flicker on and off you have to stall out eng... Trouble codes: P1518 (pcm to tac module serial data ckt)
2004 Chevrolet Silverado 2500 HD 6.6L A/C Vents, Defrost VIN: 1GCHK29244
This pick-up switches the air flow from vents to defrost to lower section back and forth and does not matter if it is at idle or running down the hi-way. Replaced control head but of no results does this need to be reprogram thanks in advance
1993 GMC Jimmy 4.3L No Start, Cuts out VIN: IGKDT13W9P
Hi Techs, Vehicle came into the shop not running. fuel pressure was checked and had 52psi and would not maintain pressure. installed new pump & regulator now we have 62psi & it will not bleed down. It will run untill it gets hot and just shut off and not resta... Trouble codes: 22 (TPS Sensor too low), 34 (MAP Sensor or circuit too low)
1996 GMC K1500 Sierra SL 5.7L No Start VIN: 1GTEK19R6T
This is getting very odd so hopefully someone can shed some light on this. This is my friends GMC and he called to say it died while he was driving it. They towed it to his house and I went over to check it out. Having him cycle the key I could not hear the f...
1998 GMC K3500 Sierra SL 7.4L Cuts out, Stall VIN: 1GDGC34J2W
The problem with this truck is very intermitant stalling at either idle or cruising at any speed. Codes are P0141, P0161, P1626, U1041. Failure records all indicate codes at idle with 0% tps. I have never been able to catch it stalling myself and the customer ... Trouble codes: P0141 (bank 1 sensor 2), P0161 (bank 2 sensor 2), P1626 (loss of VTD communication), U1041 (loss of EBCM communication)
2000 Oldsmobile Intrigue GLS 3.5L No Start VIN: 1G3WX52H6Y
Hello fellow techs, This vehicle orginally came in for an interminnent no crank which we could not duplicate and customer stated problem only occured every few months. Did a basic electrical inspection, noted a replacement starter and battery, 1 terminal repl... Trouble codes: P0340, P0385
2002 Pontiac Grand Am SE 2.2L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Misfire, MIL Lamp on
This guy was just driving by our shop when it decided to act up.Lucky me.Mil was on and we scanned misfire codes on 2 and 3.We then pulled the plugs and found them to be the wrong ones.Keep in mind it hadnt exibited any problem to us at that point.We put the p...
2004 Saturn Ion-1 2.2L compressor fuse VIN: 1G8AG52F44
this saturn has very high mileage due to fleet use, but runs and works well. the a/c compressor fuse blows intermittently and often. have checked compressor clutch, ohms, for shorts, wiggled, pressures...all is ok. yet to intermittent for us to catch it happen...

Fixes & Summaries for GM
Fix/Summary Answers
1992 Buick Park Avenue 3.8L No Start VIN: 1G4CW53L4N
Crank sensor fixed this car. I thought the cam sensor told it when number one was up but new cam sensor with a magnet that would hold a 1/4 inch deep socket up was not the cure. Neither was a ignition module. Only one fellow said he had often went out and star...
1994 Buick LeSabre Limited 3.8L MIL Lamp on VIN: 1G4HR52L6R
Well customer has declined any futher diag. So I will never know if GM REMAN was going to be the fix, but I'm real sure of it. I had checked thouroghly and this system only has one knock sensor and all conections were tight and free of shorts or opens hence th... Trouble codes: P0325.
1997 Buick LeSabre Limited 3.8L Fuel gauge VIN: 1G4HR52KXV
Well, I received several responses about additives in the fuel coating the sender and causing erratic readings. These were all from techs in Canada, but I figured it was worth a shot to try a fuel system cleaner before replacing the sender. I added a can of BG...
1997 Chevrolet Astro 4.3L Stall, MIL Lamp on VIN: 1GNDM19W8V
Well guys, looks like we were alls fooled. I tried a new map, still had smae wacky readings at pcm. Although map voltage at map now tested .7v @ 21' vacumn. Scanner still showed 4.79v at all times. Proper signal was getting to pcm. Van still refused to start. ... Trouble codes: P0108.
2000 Chevrolet Silverado 1500 5.3L abs VIN: 1GCEK19T1Y
almost all who replied had the same recommendation.we removed the front sensors and noted about a 1/32 thick piece of rust under the left front sensor.we cleaned the rust from the hub on both sides just to be sure.after reassembly and driving the problem was g...
2000 Oldsmobile Bravada 4.3L Hesitation, MIL Lamp on VIN: 1GHDT13W7Y
after finding aftermarket vehicle remote start, traced wires and found a broken solder where tach signal was taken from. removed remote start and repaired wires. installed new ignition switch since wires had been tapped into those as well. seemed to take care ... Trouble codes: P0102 (mass air flow sensor voltage too low), P0340 (no cmp signal).
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