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Prev Professional Automotive Repair Technical Discussions for April 27, 2011
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Open Help Requests for GM
Help Request Answers
2001 Buick Century Custom 3.1L Radio VIN: 2G4YS5J311
Vehicles battery went dead. Tested battery as being weak. Replaced the battery. Now antitheft system is locking out the radio. I do not have a radio reset code. When calling GM service I was told the reset required a tech2. Can this be done without a tech2 and...
1998 Cadillac Seville STS 4.6L completly dead VIN: 1G6KY5491W
secuity light on dash and car starts up no problem,only thing is drain battery(4amp) I found pass keyIII module and I could see burn board but part is no longer available. gm [...]. any one know how to fix this car if part is no longer available? or where c...
1995 Chevrolet C1500 Cheyenne 5.7L trans.pump seal VIN: 1GCCS19WOT
looking for the measurements for the centerline of the 5.7 engine we think the crank or the trans case is bad throwing front seals & bushings out. This truck came to me after everybody else gave up It has had 4-5 bushings in the trans.
1995 Chevrolet Blazer 4.3L Hesitation, Misfire VIN: 1GNDTI3W65
please need help on this one intermitent engine works perfect stops the engine and next start up engine runs like it has one or two bad spark plugs any help will be apreciated
2001 Chevrolet Tahoe 5.3L Readiness codes VIN: 1GNEK13T81
HI THERE, The readiness codes for the Evap and the secondary air inj. will not set. The sec. air motor run's vac. valve ch'k out is all good. The e-vap had a code set ,so I'm assuming the comp. is working, I've drivin this Tahoe off and on over a couple day's...
2002 Chevrolet Tahoe LS 5.3L a/c control panel VIN: IGNEK13Z72
This is one that has me pulling my already gray hair out. With key and headlights on if you turn up the dimmer switch the climate control automatically goes from heat to a/c. Turn dimmer down it goes back to heater. Also with door open and the dash lites turne...
2003 Chevrolet Silverado 1500 LS 4.8L MIL Lamp on VIN: 2GCEK19V83
OKY-DOKEY- this vehicle has been in and out for almost 2 years. oriinally it came in with eng lite on for o2 sensor slow, replaced and was ok for a while, then came in with misfire on entire right right side, if erased code would be ok until driven then would ... Trouble codes: P0157, P0449, P0455
2003 Chevrolet Blazer LS 4.3L Misfire, MIL Lamp on VIN: 1GNDT13XX3
came in missfiring with p0300 stored, customer installed new plugs in cyl's 1,2,4,6, and left the other two and wires, cap and rotor for me. cam retard was @ -8 so i took care of that, is now set to 0. ran like a champ for a week, came back with a miss and cod... Trouble codes: P0300 (Multiple cylendar miss.)
2004 Chevrolet Trailblazer LT 4.2L temp acuator VIN: 1GNDS13S54
originally came in for air flow issues {manual system} which was repaired by replacing mode door acuator, week later its back in for left side wont switch from hot to cold, has B0408 code,went to temp acuator & found it to be at fault{acually took apart acuato...
2005 Chevrolet Equinox LS 3.4L Abs VIN: 2CND173F85
we have this 05 equinox w/coo36 code (l L.F. speed sensor) wich tests o.k. the strange thing is all sensors read twice the actual speed of the vehicle and once in awhile the abs will activate on a slow speed stop. has anyone had any similar symtoms any input w...
2006 Saturn Vue 2.2L Mechanical VIN: 5GZCZ33DX6
This car came in with lower engine knock due to lack of oil change. Tried new set connecting rod bearing that work for a day. Cust decided to go with used motor. Replace motor only to find out oil pouring from rear main seal. pull motor, replace seal only to f...

Fixes & Summaries for GM
Fix/Summary Answers
1998 Buick Century Limited 3.1L MIL Lamp on VIN: 2G2WY52M9W
Well apparently purge at idle IS normal, so I'm glad to know that. I guess I was mistaking that for EGR at idle, which isn't normal. After the car came back the next day for follow up diagnostics, I unplugged the purge hose and it was dry. Then I noticed my... Trouble codes: P0172 (Fuel system rich), P0440 (Evap system leak detected).
1998 Cadillac DeVille 4.6L Stall VIN: 1G6KD54Y3W
Thanks to all that replied. I learned some new diag tips on the Norstar system. I cleaned 4 grounds and checked rub points on the harness and found nothing amiss. I recomended to the customer to get me dealer cps two different times. The last time was when he ... Trouble codes: P1599.
1995 Chevrolet Monte Carlo LS 3.1L timing chain?? VIN: 2G1WW12M2S
Thanks to the group for the speedy and multiple replies, turns out the camshaft was broken on this one, pulled front valve cover and had no movement on rear of valve train. Customer is not interested in further repairs at this time, thanks again for all the r...
1996 Chevrolet Cavalier LS 2.4L Poor Idle Quality, Misfire VIN: 1G1JF52T6T
Hi Everyone, Well, we tried everything all of you suggested. We did go back and check compression and it was actually in the 170 range. We threw the other compression tester out as you can imagine. I still do not know what is wrong. Timing is on, replaced... Trouble codes: P0301 (Cylinder 1 misfire).
1999 Chevrolet S10 4.3L brake pedal VIN: 1GCDT19X8X
Once again, the issue never came back after the one time it had happened. I think that we are going to end up disconnecting the ABS unit entirely. Thanks for all the replies, I wish I had more news and a fix. Thanks again.
2001 Chevrolet Venture LS 3.4L No Start VIN: 1GNDX03E31
Many hours later proublem found!! Broken , rubed through wire not sending power to 0.5 pink 459 at C2 #24 at ECM . Harness damage 8" from ECM plugs , rubed on air filter box on under side of harness . Noticed 1 blink of check engin light when key is turned on...
2003 Chevrolet Silverado 1500 5.3L stop lights VIN: 1GCEK19T73
i got to play with it today, pretty quick and simple the circuit board went bad. i replace both boards for good measure and all is good thanks everyone
2005 GMC Envoy XL SLT 5.3L No Start VIN: 1GKET16M05
I checked evrything that people suggested, and still no luck. I threw in the towel and sent this to a dealer. Hopefully I will find out what the resolution is. Thanks for your help. Trouble codes: U1000.
2001 Oldsmobile Intrigue GL 3.5L Cuts out, Stall VIN: 1G3WH52HX1
Well, this car is done. Sounds like it was destroyed in an accident, so I don't really have any way to finish the testing on it. Most of the replies that I received indicated that the ignition switch was likely to blame. Thanks for the help!
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