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Prev Professional Automotive Repair Technical Discussions for November 9, 2005
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1995 Buick LeSabre Custom 3.8L coolant temp VIN: 1G4HP52L9S
Hello all. Thanks in advance for any help. Vehicle first came in with temp light coming on intermitently. Brought vehicle in found that the vehicle temp sensor for computer was intermitently spiking to 304 degrees then goes right back down to 195. Replaced coo...
1997 Buick LeSabre Limited 3.8L head lights VIN: 1G4HR52KXV
new customer, when he turns his light switch to the position that use to take 15 seconds for the lights to shut off, it now takes 8-10 minutes. Not familiar with GM system, Does the light switch have a controller built in, or is a controller seperate? Thanks ...
1997 Cadillac DeVille Concours 4.6L Security System VIN: 1G6KF5496V
Vehicle came with a bad alternator bearing (making noise). As we've done so many times before, we disconnected the battery, replaced the alternator with a Delco reman unit. and reconnected the battery, but the vehicle won't start. Now it only cranks and the in...
1998 Cadillac Eldorado ETC 4.6L ride control VIN: 1G6ET129XW
hey every one this caddy don"t like steering rate came in with 1287 1288 codes. diagnosis rate sensor bad replace sensor every thing ok.came back in about a month same codes.lab scoped sensor found open in sensor at slight left turn.warranty the sen...
2002 Cadillac Escalade 6.0L Steering Stability System VIN: 1GYEK63N92
Hello Iatn members, I would like an assistance for this intermmittent problem. I have this vehicle with intermmittent codes C205 and C207-service stability system. I cleared the codes then drive to duplicate the problem-it wouldn't set. I let the owner drive ...
1986 Chevrolet S10 2.8L No Start VIN: 1GCCT14R1G
I recieved this Vechile after customer tried to repair himself. Came in on trailer,no start. Customer replaced regulator to correct flooding condition, now does not inject any fuel. Fuel is present at return line on throttle body. Fuel relay and pump cecked ou...
1992 Chevrolet Lumina Euro 3.4L t-belt VIN: 2G1WN54X9N
92 lumina 3.4 t-belt timimg. went to install t-b and the cam gears do not float free on the cams with the bolts finger tight. had to use puller to get cam gears off to replace cam seals, and had to use the bolt to reinstall the gears. with the cam lock tool in...
1993 Chevrolet Corvette 40th Anniversary Edition 5.7L No Start, no serial data VIN: 1G1YY23P4P
could not comunicate with scanner, testing lead to pcm, burnt smell from computer so we replaced it. Still no scan data, re-ran trouble tree and other possibilty was the mem-cal so we replaced it, still no data. Thought maybe the mem-cal had hurt the new pcm s... Trouble codes: 41 (ccm code for ecm serial data circuit)
1994 Chevrolet S10 Blazer Tahoe 4.3L speedomter VIN: 1GNDT13W1R
This my sons truck, the ABS light is on, it has a upshift problem (*stays in frist) if you move the shift lever to 2 nd it will shift to 2nd. ABS codes 72 no rear speedo signal. No other codes (Trans or Engine) The speedomter will jump from 0 to 70, scan ck t...
1994 Chevrolet Camaro 3.4L No Start VIN: 2G1FP2259R
i'll get to the point. This camero is driving me nuts,it goes intoan extended crank after a hotsoak (no spark injectors are pulsing).It came in with a code 82 Ign ctrl 3x signal error.We pulled flowchart forthe code 82 the sensor warm was 1.119k ohms well with... Trouble codes: 82 (Ign.ctrl 3x signal error)
1995 Chevrolet Blazer 4.3L ignition-dash VIN: 15DF5E6HKU
next time it died it shut off then dash gauges came back tried to restart crank but not fire at this time no service light try to restart it to check for spark and it started it never dies long enuff to find an answer any ideas
1996 Chevrolet K1500 5.7L Cuts out VIN: 1GCEK14R4T
HELP, PLEASE!! Vehicle feels like it hitting a rev limiter under accel, either hard or normal, while pulling away from a stop. Only code that has showed is a misfire code P0305. Have repaired misfire and code has not reset. Have looked and done wiggle test on ...
1996 Chevrolet Corvette 5.7L Operation VIN: 1G1YY22P2T
Customer complained that the A/C control always starts at 75 degrees every time the vehicle is shut down and restarted. Also, he complained that the air was not blowing on "Automatic" setting even when the temperature was set at 60. If you manually control the...
1997 Chevrolet Monte Carlo LS 3.1L Cooling Systems VIN: 2G1WW12M4V
Hello to all we have this Monte Carlo has sign of oil in the coolant reserve and a small amount of oil in radiator car came in for a oil service only the other day we saw a lumina with the same engine and year model with the same problem. Have not done any dia...
1998 Chevrolet Tahoe LS 5.7L engine VIN: 1GNEK13R8W
when the engine is cold it has a valve train noise. removed covers and found that the number 4 cylinder exhaust valve was making noise. tightened the rocker till the noise went away. 10 seconds later it returned. continued doing this till lifter bottomed out. ...
1998 Chevrolet C1500 Cheyenne 5.7L MIL Lamp on VIN: ZGCK19R8W1
truck came into shop with p0303 and p0338, definite miss at cyl #3, owner had replace plugs, wires, cap and rotor, oxygen sensors, all seem to be working normally. found plenum o-ring damaged, and replaced it, also replaced #3 injector, still has miss, checked... Trouble codes: P0303 (cyl 3 misfire), P0338 (crank position sensor)
2000 Chevrolet Silverado 1500 5.3L message center VIN: 15DF5E6HKU
message center says service 4x4 cant seem to get info what this means any help would be great at least a point in the right direction
2001 Chevrolet Silverado 2500 HD 8.1L Unknown VIN: 1GCHC23G41
This truck has a heavy dull thump in the driveline as you come to a full stop and when you take off. It feel like a double thump when you stop and a single thump when you take off. The previous owner was told that it was the Allison transmission and it was nor...
2001 GMC Sierra 1500 SL 5.3L Steering VIN: 2GTEK19T51
Vehicle came in, customer thought it was out of pwr. steering fluid. It was not low and had no leaks. Thought maybe valve in pump was sticking at times because could not duplicate problem. Replaced pump,would bind when turning right. Okay?... replaced steering...
2000 Oldsmobile Intrigue GL 3.5L locking VIN: 1G3WS52H1Y
coustomer says that this will happen and he turns ignition off and back on and the problem is gone.this is my first post and my first time hearing of this. any help would be great. THANK YOU FOR YOU PATIENCE.GARRY
2002 Oldsmobile Alero GX 2.2L Passlock VIN: 1G3NK12FX2
Thank you for taking the time to read this. I purchased this vehicle not running and have been told that someone may have already replaced the ignition switch. When I attempt to start it, it dies after 1 second and the security light flashes CONTINUOUSLY. I at...
1991 Pontiac Firebird 3.1L Poor Idle Quality, Cuts out, Stall, MIL Lamp on VIN: 1G2FS23T1M
hello techs out there, i'm having a very hard time figuring this one out. i have a 91 pontiac firebird that just starts and dies checked fuel pressure, it was 45 psi with the key on engine off. checked fuel volume good. found distributor pick up corroded. repl...
1991 Pontiac Firebird Trans Am 5.7L Excessive Emissions, Poor Idle Quality, Misfire VIN: 1G2FW2387M
Thanks for your time- This car is a real head scratcher. It idles poorly with a wandering misfire, it does it right from start up to fully warmed up. It seems to run great under load, but if you hold rpm up in neutral it seems to misfire like at idle. While i...
1999 Pontiac Montana 3.4L heater controls VIN: 1G3CG12KC3
Customer complains that heater stays on "vent" mode when the weather gets cooler outside,but as soon as we check it out it starts to work on all modes.It won't stay in this condition long enough to test it properly.Checked for service bulletins, etc. and none ...
1999 Saturn SL2 1.9L Alternator VIN: 1G8ZK5270X
This saturn came in for charging problem. Customer replaced battery and supplied alternator for R&R. It's not charging and the battery light never comes on except for key on bulb check. I replaced the alternator for a second time with one from our vendor with ...

Fixes & Summaries for GM
Fix/Summary Answers
1997 Buick Park Avenue 3.8L No Start VIN: 1G4W52K0V4
A big high 5 goes out to Ralph [...] who all hit it on the head with HOLE IN PLENUM LETTING COOLANT DROWN OUT THE PLUGS.I wasn't personally doing the work so when I ask the mechanic about coolant the response was YES I did ha... Trouble codes: P0300 (multiple missfires).
1990 Chevrolet K1500 Cheyenne 5.7L Surge, Cuts out, bucks, jerks VIN: 2GCEK19K6L
thank you members of iatn once again!!!i used everyones help and this one is fixed. the concern was when the motor got hot it would buck and miss. and when using turn signal and headlight circuit it would buck and miss to the flasher. or when you turn the ligh...
1992 Chevrolet Astro 4.3L ping VIN: 1GCCM15ZXN
after everything i posted did not fix it i went ahead and replaced the knock sensor with one from an engine we have sitting in the back bay,the test of tapping around sensor and watching the timing retard showed the old one not responding,replaced with the use...
1992 Chevrolet C1500 Cheyenne 5.0L No Start, Cuts out, Stall VIN: 1GCDC14H3N
I was not able to check the fuel pressure because no resource to a throttle body connection. What I did to test the fuel pump was, the vehicle would start for a little bit then die so what I did was, disconnect the fuel pump relay and applied 12 volts to the f...
1994 Chevrolet K2500 Cheyenne 5.7L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Misfire, Poor Fuel Economy VIN: 1GCGK24K4R
Thank you very much to all that replied.As it turns out David came cloest to what had happened here.He thought the base timing may have been off becouse of the harmonic ballencer slipping.Well he was right about the base timing being off.As it tuns out this en...
1998 Chevrolet C1500 Cheyenne 5.7L hard start VIN: 2GCEC19R8W
hello group after pulling pass. valve cover...found two pushrods sittin there. the press in stud had backed out on cly.s 2 and 8.explaining popping noise... we used our special press tool(bfh)& adjusted valves..the truck sounds like a motor shud. altho we star...
1999 Chevrolet C1500 LS 5.7L iner axle seal VIN: 1GCK3R4RSU
Sorry for the late fix post. Yes the axle came out without having to take the diff. apart, it pulls out, but it took a lot of effort & time to finaly get it out, i spend at least 35min. with the slidehammer & pry bars finaly it poped out and a change the oil s...
2000 GMC Sierra 1500 SL 4.8L hard start VIN: 2GTEC19V3Y
Thank you for all the help the promblem was a fuel pressure regulator. when i pulled the vaccum line off the gass was spitting out.Thanks again
1997 Pontiac Grand Am SE 3.1L ign lock cyl VIN: 1G2NE52M3V
Well it is fixed. Most of you agreed that the lock cyl. was defective and it was. Replacing the lock cylinder solved the problem, but it was not easy. I have discovered the easiest way is to drill the tumblers out of the lock cyl (if it wont turn to run). I us...
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