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Prev Professional Automotive Repair Technical Discussions for July 14, 2008
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Open Help Requests for GM
Help Request Answers
1997 Cadillac Catera 3.0L engine VIN: W06VR543VR
Hi Guys, This all started with a simple radiator repair, it came in with a broken tank on the left side. The problem I can't figure out is why this engine will push the coolant out of the resevoir. By all accounts it is not actually overheating, i.e. no coolin...
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2000 Cadillac Catera 3.0L abs light tc light VIN: W06VR4YR07
We need help, we have not done much in diagnostics, but we have 2 customers with same problems. the customer states abs light and tc light are coming on, speedo in-op, radio in-op at times and one customer states his p/s gets hard at times. any ideas where to ...
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2002 Cadillac DeVille 4.6L transmision engage
please help have a caddy with a P1825 internal shift mode switch illegal position. Hard shift will happen and then light will come on. Position on Modis reads correct but installed new shift selector switch on valve body still same problem. Also if it sits and...
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2004 Cadillac CTS 3.6L oil consumption VIN: 1G6DM57784
Hello and thanks in advance for any solutions. This is my son's car, he bought it used. He took it to Florida for spring break, and the "check oil level" message came on. Then the MIL came on P341 Cam sensor. When he checked the oil it was 3 quarts low. After ...
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2005 Cadillac CTS 3.6L Misfire, MIL Lamp on VIN: 1G6DP56785
came in with a skip and mil lamp on in modius scanner found a reset for fuel trim reset fuel trim mil light went off mis fire stopped road test twice car fine over weekend light back on and so is mis fire has anyone expierenced this problem? Trouble codes: 300 (random misfire), 302 (2 cyl misfire), 304 (cyl 4 misfire), 306 (cylinder 6 misfire)
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1985 Chevrolet S10 2.5L No Start VIN: 1GCCS14EXF
This truck won't build pressure & pump doesn't come on when you turn the key on (not cranking), it will build 10 psi if you crank the engine for several seconds. Fuel pressure drops to zero as soon as you turn the key off.I have put 2 fuel pumps in both Carter...
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1989 Chevrolet Camaro Iroc-Z 5.7L Poor Idle Quality, MIL Lamp on VIN: 1G1FP218XK
service engine soon light 0n, engine idles at 1200 rmp has current code 22 tps too low. when code is cleared and vehicle is started engine idles ok while light is off, about 5-10 seconds and then goes back to 1200 rpm. have checked voltage and refrence signal ... Trouble codes: 22 (throttle position sensor too low)
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1995 Chevrolet Corsica 2.2L MIL Lamp on VIN: 1G1LD5542S
Car has new egr valve, solenoid tests good, good vacum, and egr is commanded at correct times, but light will return at highway cruise. Thanks in advance for your help. Trouble codes: 32
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1995 Chevrolet C1500 Cheyenne 5.7L flaps VIN: 2GCEC19K3S
system when switched to max ac still bleeds air out of defroster and floor, air very cold . all speeds working but not enough air coming out of dash vents on max. I have limited info with Mitchell on demand.
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1997 Chevrolet Corvette 5.7L a/c, seats, lights VIN: 1G1YY22G7V
Hey guys. I usally don't work on this type of car but it was handed to me tonight. Started as no a/c. Found fuses removed. After questioning the customer he stated that the blower motor would turn on by it's self w/ key off and out of car.After a nice conversa...
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1998 Chevrolet K2500 Cheyenne 5.7L Stall, Misfire VIN: 1GCGK24R6W
i installed engine truck ran fine. customer wanted to install his own exhaust,let him take to have exhaust installed when exhaust is finished i want it back to check everything. next thing i know its back on tow truck. starts when you give it gas dies out. hoo...
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1998 Chevrolet K3500 Cheyenne 6.5L Stall VIN: 1GCHK33F9W
Problem is intermittant stall / with (usally ) quick restart Due to the fact this 6.5L had a P0251 code we supected the injection pump - problem was engine would die and usally restart (instantly) but at times "crank/ no start" - when the engine died we saw a... Trouble codes: P0126 (Insuf Coolant temp for stable operation), P0236 (Boost Snr 1 out of range), P0251 (Inj Pump A rotor Cam problem)
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1998 Chevrolet Cavalier LS 2.4L MIL Lamp on VIN: 1G1JF52T2W
car came in with check engine ligth on found code p1336 crankshaft position variation not learned tryed about 100 times with snap on modis to perform cranksahft varition learn procedure and it will not take perform diagnoiss as per all data , tryed crankshaft ... Trouble codes: P1336 (ckp variation not learned)
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1999 Chevrolet K2500 Suburban 6.5L #20 fuse shifting VIN: 3GNGK26FOX
need help #20 fuse blows "while beating on it" is the complaint. found 30 blown fuses on floor. installed fresh fuse test drove truck all good. tryed "beating on it" but how much can you beat on a 157k 6.5 diesle. any ways got it to act up fuse good getting sh...
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2000 Chevrolet Silverado 1500 4.8L oil pressure VIN: 1GCEK14VXY
vehicle runs normally with no engine noise no check engine lite and no other problems. after about ten minutes of driving the oil guage pegs low at stops and the message center reads check oil pressure. put on e-brake and leave in drive and get out to listen t...
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2000 Chevrolet Silverado 1500 5.3L Reverse VIN: 1GCEK14T8X
Hello folks need to be rescude.Truck came in with hard shift .Replaced valve body and lost reverse.Removed valve body checked to be sure all balls in the right spots.Missed one the first time.Replaced vavle body again,Still no reverse.Reinstalled old valve bod...
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2002 Chevrolet Impala 3.4L Misfire VIN: 2G1WF52EX2
got this impala with 3.4 engine car has miss fire scanned car for codes and didnt find any missfire code but it did have one for fuel gauge problem went to data and saw missfires in #1 #3 cyl.we did a tune up on it with wires,plugs performed compresion test wh...
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2002 Chevrolet Impala LS 3.8L MIL Lamp on VIN: 2G1WH55K42
Greeting fellow techs, Hope someone can help me here. I have this 3.8 Impala that is setting code p0102 for the mass airflow sensor. Initial diagnosis showed that the MAF reading would change dramatically on scan tool when wiggling plug. Soldered in new plug,... Trouble codes: P0102
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2004 Chevrolet Colorado LS 3.5L abs light VIN: 1GCCS19604
I first want to thank all for their response to my previous brake issue. I put new brake rotors, pads and replaced the rear adjusters. Upon backing it out of the garage and going up the drive, the brakes grabbed badly till it set the abs lite and then the brak...
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2005 Chevrolet Express 3500 6.0L Mechanical VIN: 1GCHG35U35
driver complaines that the brake pedddel goses to the floor & looses power steering. I have checked belt & tensioner and there ok. replaced master cly. still have problem. I belive that it is a power assyst problem or hydro boost problem. thanks for any info.
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2005 GMC Savana 3500 SLE 6.0L steering control VIN: 1GJHG39U65
I could use some help on this one. Customer complained of the stability light coming on. I test drove vehicle and never saw the light come on. I scanned the system and found a C0455. I couldn't find much info on this code and how to check it out. We told the c...
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1995 Oldsmobile Aurora 4.0L MIL Lamp on VIN: 1G3GR62C5S
hello all i have a olds aurora that has a code 85.the light comes back as soon as i erase it.the idle drops to slow when reved up.i installed a new idle solenoid and relearned the idle per alldata.i would appreciate some insite on this problem.i have a genesis... Trouble codes: 85 (idlelearn at maximum authority)
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1997 Oldsmobile LSS 3.8L tcc VIN: 1G3HY52K9V
ok, here goes. I just bought this car(couldnt pass it up for $250 in showroom condition, 70 year old man owned it) anyway, i have a transmission problem, I flushed fluid and changed filter and made problem a little better, but still there. problem is, when car...
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1998 Oldsmobile Silhouette GL 3.4L accessories VIN: 1GHDX03EWD
this is my friends van! so need all the help i can get! thanks in advance for all the help! first off we had the van towed in and i checked all the fuses and there were 4 blown. power mirror,power locks,ctsy lamps and e.l.c. i cannot find out what the e.l.c. f...
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1999 Oldsmobile Bravada 4.3L blend air servo VIN: 1GHDT13W4X
i've got a 99 olds bravada the problem is that the blend air door servo is being driven to the full hot position at all times. I removed the servo to check the door operation and it is free to move in both directions. I can manually twist the servo and leave t...
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1998 Pontiac Bonneville SE 3.8L Stall VIN: 1G2HX32K0W
This pontiac has a very intermittent stall problem which generally occurs on deceleration. Each time it occurs it sets a po102 code. Power and ground to the sensor and the 5 volt square wave were monitored in the shop on a lab scope with the engine running. Du... Trouble codes: P0102
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2001 Pontiac Grand Am SE 3.4L Cooling Systems VIN: 1GFJW32431
hey every one thanks in advance for ur time and help this car the fans wont come on time, replaced the t-stat coolant sensor. bleed the system many times... fans come on intermittent (low speed)temp at 90-95c when the fans r not on coolant starts to boil and ...
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2002 Pontiac Grand Prix GT 3.8L Excessive Emissions, Poor Fuel Economy, sulphur smell VIN: 1G2WP52K02
Customer returned 9 months later saying she had an exhaust leak from our previous work.She stated she gets horrible mileage. she stated her exhaust smells like rotten eggs(sulphur).She also needed wheel bearings. We replaced thehub assemblies. welded the small... Trouble codes: P811
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Fixes & Summaries for GM
Fix/Summary Answers
1997 Buick Park Avenue Ultra 3.8L Excessive Emissions VIN: 1G4CU5212V
Good morning everybody I would like to thank everyone who sent me ideas of what could be wrong with this car.It ended up being a pin hole leak in the plastic fuel line by the firewall.I must have overlooked this before,thats what happens when your in a hurry.A...
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1992 Cadillac Eldorado 4.9L Surge, Cuts out VIN: 1G6EL13B3N
This Caddy did not get repaired. I found info on the cruise servo position sensor causing the same problem, but after following that it didn't help. It acts like the PCM is trying to save itself. But I have run out things to scan, scope, or trace down. I've ne...
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1994 Chevrolet Caprice Classic 4.3L hard to start VIN: 1G1BL52P8R
We fianally fixed this car. The fix was a bad fuel injector. All of the replies were very helpful and after ruling everything else out, we started checking the obvious again. Thanks again IATN!
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1995 Chevrolet K1500 Suburban 5.7L rear heater VIN: 1GNFK16KXS
not wanting to just cut the fitting off the hose and clamping it to the pipe risking a costly comeback should the hose slide off-thank you dave---dorman has everything.
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2000 Chevrolet Silverado 1500 5.3L no 4wd VIN: 2GCEK19T0Y
I WOULD LIKE TO THANK EVERY ONE WHO RESPONDED AND ALSO IF ANY ONE ELSE HAS ANY IDEAS IT WOULD BE MUCH APPRICEATED. I RECIVED A FEW REPLIES, ONE SAID TO CHECK TO SEE IF T-CASE COULD BE SHIFTED BY HAND. WE TRIED AND IT WOULD SHIFT BY HAND. ANOTHER GUY SUGESTED I...
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2001 Chevrolet Impala LS 3.8L Hesitation, Surge VIN: 2G1WH55K31
tHANKS FOR AL [...] THE HELP ON THIS ON IT TURNED OUT TO BE THE CAT. THE MONOLITH IS COMPLETELY PLUGGED UP REPLACED THE CAT, WIRES ,AND PLUGS AND SENT THIS ONE DOWN THE ROAD!
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1998 Oldsmobile Achieva S 3.1L all system VIN: 1G3NL52M8W
thank you for all the help, we did find the problem, the issue was a broken wire from the ignition switch and the regulator. the wire was touching sometimes and not others, repaired the break and problem fixed. thanks for all the help.
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2005 Pontiac Sunfire 2.2L temp gauge VIN: 3G2JB52F05
well I do not have much reply so I go ahead put in new cluster and have gm reprogramme it everything works well thanks to all who take time and reply
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1998 Saturn SL2 1.9L Will Not run monitors VIN: 1G8ZJ5270X
Thanks to all for responding. We originally replaced the T-Stat and it brought the temp up 30 deg but not enough to run monitors. With the advice given from most, we replaced the temp sensor and sure enough it was slightly out of calibration with the correct t...
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