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Prev Professional Automotive Repair Technical Discussions for February 16, 2007
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Open Help Requests for GM
Help Request Answers
1994 Cadillac DeVille 4.6L wipers
customer installed wiper motor when brought to us. wiper blades would only move about 2 inches in the high position.only found old motor ,took the circuit board cover off the new motor, straighted the tabes inside. installed on old motor. now it runs in all po...
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1997 Chevrolet Cavalier LS 2.2L Poor Idle Quality, Hesitation, Poor Fuel Economy, MIL Lamp on VIN: 1G1JF524XV
missfire jumps from cylinder to cylinder at random .number one cylinder on monday,number 4 cylinder on tuesday.missfire is only at idle,off idle missfire goes away.disconnect exhaust and missfire quality changes,almost goes away. Trouble codes: P0300, P0301, P0304
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1997 Chevrolet Cavalier LS 2.2L Poor Idle Quality VIN: 1G1JF5247V
This type car is usually pretty simple but I sewem to have an odball problem here. Car came in 2 weeks ago with complaint of fuel smell. Found number 2 injector and pressure regulator was leaking replace both an problem seemed ok. Brought car back 2 weeks late... Trouble codes: 300 (random misfire history code)
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1997 Chevrolet K2500 Cheyenne 5.7L No Start VIN: 1GCGK29R6V
I bought this vehicle not running. The plugs were fouled black so I threw a new set in. After doing so, it would crank normally and occaisonly run poorly for ten or fifteen seconds. It sounded pretty awful. On a hunch, I pulled one of the plugs and it was foul...
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1998 Chevrolet K2500 Cheyenne 5.7L output shaft bearing VIN: 1GCGK29R9W
I am trying to remove the output shaft seal and bearing fron the drivers side of this vehicle. I am not able to get the bearing out. Has any one ran into this problem before. Do you have any advice on how I can get this bearing to come out. Is there a certain ...
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1998 Chevrolet C2500 Cheyenne 5.0L Fuel Gauge
Hello there I run a speedometer repair shop and have seen this happen on TWO different Chevy Trucks. The Fuel Gauge needle will work correctly but will VIBRATE VERY FAST. IF you place a finger on the needle it feels like an electric toothbrush it vibrates so m...
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1999 Chevrolet Blazer 4.3L Misfire, MIL Lamp on VIN: 1GNDT13W9X
We have a S-Blazer here that will set a random misfire code intermittantly.Came in with mil on po300 with original ignition parts...replaced all, vehicle ran great.Came back a few days later same code.Freeze frame shows p0301 or p0306...different codes on diff... Trouble codes: P0300
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2001 Chevrolet Express 1500 5.0L Misfire, MIL Lamp on VIN: 1GBFG15M51
Hi all, This is gonna be a long one. This Express van came in about 4 months ago with the starter mounting bolt holes cracked thru the centers. We replaced the engine with a new GM Engine, not rebuilt, but NEW. Since that time it has come back 4 times for the ... Trouble codes: P0300 (Random Cylinder Misfire), P1381 (misfire- no communication with ABS controller)
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2002 Chevrolet Express 2500 5.7L ABS Readings VIN: 1GCGG25R72
Here's a good one for you GM tech's... Vehicle came in with intermittent low speed ABS activation on left front wheel. Thought at first maybe the speed sensor had some rust buildup on the mounting base but decided to run a value scan with our Solis first, to ...
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2002 Chevrolet Trailblazer LS 4.2L MIL Lamp on, Reduced Power Mode VIN: 11GNDT13SX
Hello all, I have a Trailblazer here I need some advice on. Initially the vehicle came in with the Service Engine Soon and Reduced Power lights on. The two codes listed below were stored. I followed the flow charts but no fault was found. I cleared the codes, ... Trouble codes: P1512 (Throttle Control System - Backup System Performance), P1515 (Throttle Positions not within calibrated range)
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2003 Chevrolet Impala LS 3.8L starting VIN: 2G1WH52K43
we have a 2003, chevy impala ls with a 3800 v6, has a 1.4 amp draw, we have check and found that the radio fuse and the ipc/bcm fuse are removed the draw is gone, we have sent the radio out to be checked, and a new reman radio unit has been installed, we have ...
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1992 Geo Storm 1.6L Hesitation, Cuts out, Stall, MIL Lamp on VIN: J81RF2365N
Thanks in advance for any help you can give. This Geo came in on a wrecker and didn't run at first. We checked the fuel pressure and the volume, both were good. We then checked the system with a scanner and found two codes, a 110 and 140 both were called undoc... Trouble codes: 110 (undocumented code), 140 (undocumented code)
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1988 GMC K2500 Sierra 5.7L engine VIN: 2GTFK24K75
overheats at idle, but not on cruise. came in for a coolant leak at the waterpump and t-stat gasket. we found the coolant temp sender was in the back of engine on passengers side between cylinders 6 and 8. we thought should be on drivers side, up front between...
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1999 GMC Jimmy SL 4.3L front axle VIN: 1GKDT13W3X
this seems a little odd. ft axle will not auto engage. can manually put in by moving cable and works just fine. keeps setting code. check for power to ft axle vac sol and none found. atc module grounds sol to apply vac to ft axle actuator. apply power to sol a...
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2004 GMC KODIAK 6.6L all gauges VIN: 1GBE4C1194
someone please help i have a 04 kodiak that once in a while all the gauges will go dead, it seems more after it rains than other. my mitchell dont go that heavy,dont know where to start, any help would be greatly appreciated.
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Fixes & Summaries for GM
Fix/Summary Answers
1997 Buick LeSabre Custom 3.8L Cuts out VIN: 1G4HP52K5V
Hello Group: This car is finally fixed. After readind all 20 replies that varied from wiring problems at the PCM, fuel pump/sending unit problems, fuel pump relay ground, intermittant injector driver, PCM failure,bad connections at the crank or cam sensor, ign...
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1999 Buick Regal GS 3.8L starter VIN: 2G4WF5218X
A million thanks to everyone who responded. Most of the replys advised volt drop testing all circuits. Kevin [...] hit the nail on the head in advising I closly inspect all power and grounds at the ECM The problem turned out to be a coroded spot at a punc...
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1996 Chevrolet S10 2.2L OBDII monitors VIN: 1GCCS1449T
Thanks for all the replies! It appears I haven't 'lost it'. Most suggested getting the engine up to temp. That was done before opening this case as the T-stat was missing the center pin. No change in running the tests even though the temp was normal now. The f...
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2003 Chevrolet Silverado 2500 HD 6.6L Surge, MIL Lamp on VIN: 1GCHC23103
the fix was replacing the pcm & reprogramming. the egr vent control ground circuit was intermittent in function.thanks for all the help! Trouble codes: 404 (egr pressure sensor circuit.).
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2000 Oldsmobile Alero GL 2.4L heater control VIN: 1G3N152T6Y
Hey Guys, sorry taking so long getting back on this problem. It's the middle of winter here and my buddy chooses to leave it as it is for now with no place to work on it and all. Thank you to those who responded with some real good advice and suggestions. I'll...
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1998 Pontiac Grand Prix GTP 3.8L Cuts out VIN: 1G2WP1212W
cam sensor wire shorting to groung int.ANOTHER TIME WASTER.
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1999 Pontiac Grand Am SE 2.4L daytime running lights VIN: 1G2NE12T2X
This was a car purchased at an auction so it had an unknown history. The fix was that one of the headlight bulbs was the wrong one. Thanks to Bradley [...] for the suggestion to check the bulbs! And thanks to all the other great suggestions! This site is the b...
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1999 Pontiac Grand Am SE 2.4L Unknown VIN: 1G2NE12T3X
Andrew and Bull hit this on the head. It seems that they both sent me 2 similar bullitens on bleeding the abs valves. Once I did the cycling the pedal started to come back. It did take 3 sets of doing the 5 key cycles though. Happy to say that I now have nice ...
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2000 Pontiac Bonneville SE 3.8L door locks,power windows,power mirrors VIN: 1G2HX54K2Y
Hi Guys, Thankyou so much for the information. I have learned through your help that,I must buy brand new body control module from gm,and that module must be programed to that car.I have also learned through members,that remote starters can be very troublesome...
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