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Prev Professional Automotive Repair Technical Discussions for July 19, 2004
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Open Help Requests for GM
Help Request Answers
1997 Cadillac DeVille Concours 4.6L a/c compressor VIN: 1G6KF5495V
hi guys, i have this caddy in the shop with the a/c not working, the display in the cluster keeps saying very low refrigeant and compressor off. the system does have the full charge of freon. i cleared the codes by the a/c console and also by disconnecting the...
1998 Cadillac DeVille 4.6L abs and traction control lites VIN: 1G6KD544XW
abs and traction control lites are on. code # 1227 left rear excessive wheel speed variation. found no obvious problems but repaced wheel speed/hub assembly at that time because of pattern failures on past cars. also checked wiring, connectors and sub harness ...
1995 Chevrolet K1500 Suburban 5.7L compressor VIN: 1GNFK16K9S
compressor was locked up, found metal particlrs in high pressureoutlet during removal of compressor. orifice tube slightly dirty but not bad. installed new compressor, drier, orifice tube,added oil to components as per specs, evacuated, recharged, with 4 lbs. ...
1996 Chevrolet Blazer 4.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: IGNDT13W8T
cylinders 2,4,6 all missing.spark tester shows 25kv at each of these wires.scope shows all these firing lines flat.mechanically engine tests ok.seems to be fuel issue.spec is 60-66 psi.gauge shows only 52 psi however if you pinch return line can raise to 95 ps... Trouble codes: 300 (multiple missfire), 147 (o2 heater), 155 (o2 heater)
1997 Chevrolet Blazer 4.3L Ign Key VIN: 1GNDT13WXV
Received this one from a body shop, the ignition key won't come out of the cylinder. The solenoid next to the cylinder will work if power is applied to it. I, of course, have no power to it. I also do not have a wiring diagram for this circuit on Mitchell. I w...
1997 Chevrolet Lumina 3.1L Cuts out VIN: 154YGP45OI
this lumina is giving me big problems. you can drive it for 10 min and it will die. or you can drive 1 hour and it will die. sometimes it will go a week with out cutting out. each time it dies it starts right back up. when dying fuel pressure normal. when runn...
1999 Chevrolet Cavalier 2.2L front brake pads
hi everyone, i have a cav here that is eating up brakes evey 10k to 15k. calipiers seem ok hoses are in good condition. the only thing i notice is that the left outer pad seems to wear more on the bottom side than all the others. pedal feels good and brakes fi...
1996 GMC Jimmy SL 4.3L tcc solenoid VIN: 1GKCS13WXT
Possible trans recal (has [...]) or tcc pulse width modulation (pwm) solenoid. vehicle lacks power at high speeds. will not go over 70mph. believed it to be cat conv, was partially plugged but not enough. replaced anyway. ran all sorts of fuel tests, press...
1997 GMC C1500 Sierra SL 5.7L Poor Idle Quality, Misfire VIN: 1GEK19R9VE
We suspect a fuel problem causing a missfire Cylinder #8. Is this a common problem with a vortec engine? Can the injectors be cleaned with a cleaning kit or do you have to use a machine?
1996 Oldsmobile Aurora 4.0L No Start VIN: 1G3GR62C1T
This car will crank for 15sec or more sometimes-always eventually starts-no stalling or other problems noted.Yes we have checked the fuel regulator for leaks more than once-ok.Fuel pressure is constant when problem occurs,injectors are firing the noid lamp whe...
1995 Pontiac Grand Am SE 3.1L horn VIN: 1G2NE55M2S
The horn started honking while the vehicle was unattended. It would honk intermittently as the circuit breaker heated and cooled. I am pretty sure that the relay is stuck, but I haven't been able to find the relay. I can't listen for it to click because it is ...

Fixes & Summaries for GM
Fix/Summary Answers
1991 Buick Century Custom 3.3L Poor Idle Quality, Stall VIN: 1G4AH54N1M
Your not going to believe this one! First of all let me thank those who replied. Your time is valuable and much appreciated. Here are the sugestions of items that I did check but must have neglected to include them in my post, sorry. Tap tested Ecm, no cha...
1991 Chevrolet Blazer Silverado 5.7L MIL Lamp on VIN: 1GNEV18K2M
hello,-i recieved alot of great info on this problem-i went back and double checked the knock sensor with a flash lite on alift- i saw a hairline crack in the base of the housing-we must have damaged it while doing the motor swap-we installed another knock sen... Trouble codes: 42 (est circuit fault).
1995 Chevrolet K2500 Cheyenne 6.5L Excessive Emissions VIN: 2GCFK29S8S
Got lots of good advise, most suggestions were to check out turbo, check pump timing, and check out egr system. As it turns out none of these things were the problem. After lots of testing and lots of research, decided to drop the exhaust in front of cat, truc... Trouble codes: 36 (injection width long).
2000 Chevrolet Suburban 1500 LT 5.3L srs air bags VIN: 3GNFK16T2Y
Hi, I finally located a TSB from GM on this code which ended up being the exact problem and fix. TSB # 00-09-41-004 replace inflator restraining module retainer. In a nut shell on the setas side air bag is a yellow locking reatiner for the bags plug. if it has...
1994 GMC Jimmy 4.3L No Start VIN: 1GKCS13W2S
thank you to you all to answer right a way to my problem. the fuel pump fix the the morrning with the fuel guage on ready to read the pressurei would turn the key on and pressure will go up to 60 and as soon asi will crank the engine the pressure wi...
1967 Pontiac GTO 6.6L Powersteering Bracket VIN: 237677B104
Found multiple people willing to send pics of the mounting. Thanks to Mike [...] for the pics. It seems the car we are working on has a non-original pump and rear bracket. Time to do some fabricating unless we stumble across the proper pump and bracketry.
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