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Prev Professional Automotive Repair Technical Discussions for February 27, 2008
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Open Help Requests for GM
Help Request Answers
1998 Buick Park Avenue 3.8L Wingless Replacement Key Cyl Pins VIN: 1G4CW52K8W
Guys, Thanks for your help. ***. Simple thing - The replacement key cyl is all that GM now offers. No locksmith in Beckley has bit the bullet and bought the high dollar wafers to repin these new replacement lock cyls. Dealer says: I have them. Buy the bag...
1996 Cadillac Seville SLS 4.6L valve covers VIN: 1G6KS52Y4T
Car keeps coming back with leaking valve cover gaskets.It will leak into cylinders or down side of engine front or back.Everytime we have done them they will spring leaks at different area. Car has never overheated , valve covers do not appear warped.Is there ...
1989 Chevrolet C1500 Cheyenne 4.3L Poor Idle Quality VIN: 1GCDC14Z1K
first post thanks for looking. 4.3 nightmare,veh towed in complaint of no start shut off .magnets had fell apart and dist was in very bad shape,lack of options replaced with reman aftermarket.first dist, idle very rough but if unplugged timming set conn ran be...
1995 Chevrolet Blazer 4.3L Bearings VIN: 1GNDT13W2S
I owned this vehicle and had bearing pinion noise in the rear diff. I got a used rear end from an acquaintance and found the axle housing was wrong. So I transferred the limited slip differential from the wrong housing to the one in the Blazer. I replaced all ...
1998 Chevrolet S10 2.2L MIL Lamp on VIN: 1GCCS1447W
hey guys i got 98 S-10 2.2 with code p0404. I replaced the egr valve and made sure passages were clean. road tested and checked for code and there it was pending code p0404. Road tested again and the engine light came back on.When i tried to actuate the egr va... Trouble codes: P0404
2000 Chevrolet Silverado 1500 4.3L fuel gauge,oil pressure gauge VIN: 1GCEK14W9Y
Hello everyone.I've got a 2000 chev silverado 1500.The fuel and oil pressure gauges stay on when the key is off and remove.I am going to change the key lock cylinder because it is hard to turn.Very sticky.When You turn the key on and then back off it takes abo...
2003 Chevrolet Impala 3.8L rotors VIN: 2G11WF55K3
vehicle came in with a shake under braking, found front pads worn out,and .005" run-out in ft. rotors .002" run-out on rear rotors. machined 4 rotors replaced ft. pads cleaned and lubed all contact points, flushed and bled system. 600 miles later ft.rotors hav...
2006 Chevrolet Impala LS 3.5L Hesitation, Surge VIN: 2G1WB58K66
This impala came straight from the transmission shop, it has a very bad surge when accelerating. Its starts in about 1500rpm's and will finally smooth out at about 2500 rpm. It can be dupilicated in the shop by power braking in drive or reverse. If you keep th...
1997 GMC Jimmy SL 4.3L starter
Hello all- I have a 1997 Jimmy, 4WD, 4.3 auto that will not crank. Have checked & confirmed battery ok, starter will crank when pushbutton switch connected to starter solenoid. I have checked crank fuse(ok), seems to have feed from ignition switch, but no sig...
2002 GMC Sierra 2500 6.0L cranking motor
Hi Duramax specialists, I have a dirt road Duramax with 104,000mi that looks like 400,000mi. The problem is that the engine cranks at any time, with the key in the on position the starter will just engauge and start cranking the engine even when the engine is ...
1988 Pontiac 6000 LE 2.8L No Start VIN: 2G2AF81W3J
vehical was towed. no start, fires during crank, but does not start. checked fuel pressure 43psi, check spark and that seems good also, put noid light on and durring cranking lights up and fires and as soon as ignition switch goes to run position light goes ou...
1996 Pontiac Grand Am GT 2.4L No Start VIN: 1G2NW52T7T
ok guy' this thing has pulled my last hair! i will be as brief as possible, yet as accurate as possible. it will not start @ times. it sets code p1629 which is for incorrect password recieved by pcm from ipc. i have checked the passlock cylinder & discovered t... Trouble codes: 1629 (incorect password from ipc to pcm)
2001 Saturn SL2 1.9L MIL Lamp on VIN: 1G8ZK52772
this saturn has intermittent cel. Every time its at the shop it dosent act up. Map and tps code. Have swept tps and map- all looking fine. Only thing it ever does for me is intermittently idle high. When this is happening the tps is at .53v(where it always is ... Trouble codes: P0105, P0122

Fixes & Summaries for GM
Fix/Summary Answers
2002 Buick Century Custom 3.1L Engine VIN: 2G4WS52J22
Thanks to everyone for your input on this Buick. Most responses referenced the common failure of the lower intake gaskets. However there were two responses that brought up a possible failure of the tranny cooler. How had I overlooked pulling the tranny dip-...
2005 Buick LeSabre Custom 3.8L No Start VIN: 1G1HR54KX5
thanks for all of your help this one is fixed it turns out that if you do open throttle a little it does fire up we did clean throttle body and it still had problem so we looked at iac as paul said and found that it did not open far enough looked like pintle w...
1998 Cadillac civalle 4.6L egnishion switch VIN: 1G6K55441W
thank you all the member of the iatn staff, i changed the egnishion switch.. the problem has been resolved.
1995 Chevrolet C2500 6.5L Starting VIN: 1GCFC24S1S
I went ahead and replaced the injector pump, and the truck is back on the road again. 2 replies said that was what was wrong and they were right.Its a shame that an injector pump on these vehicles can't do better than 40,000 miles. Too much electronics have ru...
1997 Chevrolet Monte Carlo Z34 3.4L temp gauge VIN: 2G1WX12X5V
after reviewing all responses i did do the head gaskets, found a large amt of sediment and head gasket pieces in bottom of block, as well as pieces of silicone gasket maker plugging some of the transfer holes. I figured i had found the problem but was not comp...
1998 Chevrolet Express 1500 5.7L tcc lockup VIN: 1GBFG15R5W
Many thanks to Ed, Tony, and Eric for replying to my post. Thanks Eric for going in depth about the tranny and the Trans Go kit.In the end the fix was the ecm. Here's the good part. The vehicle belonged to a used car lot and they sent us another vehicle to sw...
1998 Chevrolet C1500 Cheyenne 4.3L No Start VIN: 1GTEK14W2W
thanks to everybody it was the moulde in the dash that was bad .i had 12 volts to the moudle but not out.thanks
1999 Chevrolet K1500 Suburban 5.7L Poor Idle Quality, Misfire VIN: 3GNFK16R2X
I ended up changing the dist. due to it having a cracked ear when it came in. It also had a Standard brand cap on it. I do believe that I had either cross fire in the cap or crossed plug wires. I ordered a Richporter Technology new distributor (part # 874183... Trouble codes: P0300, P0305, P0307.
2001 Chevrolet Express 1500 5.7L noise VIN: 1GBFG15RX1
thanks to everone again the reponse was great , we added an oil flush , ran the van hard and changed the oil and filter , not a tick to be heard . and engine seem smoother
2001 Chevrolet Silverado 1500 4.8L Connecting rods VIN: 2GCEK19V31
Thanks to all who took the time to reply. Well the consensus was mostly abuse caused the failure. But thats not the case. (no teen drivers, etc) I was hoping for some type of pattern failure but I guess we just got the short stick. I hope the replacement engi...
2002 Chevrolet S10 4.3L Cuts out VIN: 1GCCS19W42
Hey guys and girls.We replaced and programed the pcm and all is well.Thanks very much for the help.K.W.
2005 Chevrolet Astro 4.3L rear turn signals\brake lights VIN: 1GCDM19X35
Thanks again for all 17 replies-I cannot close this with a conclusive "fix" @ this time.Driver is taking to a dealer for them to diagnose.I have the last 2 bulbs that blew in my hand & the glass is black indicating excessive heat and the filment that is blown ...
1999 GMC K1500 Suburban SLE 5.7L Battery VIN: 1GKFK16R3X
Vehicle is fixed. Found passenger door ajar switch was turning on. After suspecting that as a possibility, we went around opening and closing all the doors and got the pass. door ajar switch sticking. Thanks for the insight.
2001 GMC Sierra 3500 SL 6.6L Cuts out, rpm drop no power VIN: 1GTJK39191
thanks to all the members of iATN and also thanks to Albin ,Clyde & Rusty for there time to replie to my post.the first problem i had was the scan tool i was using was giving me my boost readings in either Hg or Kpa readings and after using another scan tool&... Trouble codes: P0234, P0308.
2004 GMC Savana 3500 6.0L Misfire, MIL Lamp on VIN: 1GTHG39V34
Hi iATN, as per my update I'm posting the fix. I did not remove the cylinder heads to repair. We replaced the broken valve springs with the heads on the vehicle. Everything is great now and it runs really well. Thanks again & I must say its awesome that there ... Trouble codes: P0300 (Random Cylinder Misfire).
2004 GMC Yukon SLE 5.3L heater / engine temp VIN: 1GKEK13ZX4
A big thanks to all who responded, especially Bob and Dave and the many other techs that took time to respond! You guys were right! The Bulletin from GM "hit the nail on the head". Sure enough there was no orifice in the radiator nipple, however I did take a ...
1994 Saturn SC2 1.9L Mechanical VIN: 1G8ZG1574R
Well you guys did it again most of the replies I got said that once the cltch cylinder is removed it over extends and does not work after that, got a new assembly from saturn and it works great now. Thanks so much for your help.
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